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Herman AP, Tomczyk M, Wójcik M, Bochenek J, Antushevich H, Herman A, Wiechetek W, Szczepkowska A, Marciniak E, Tomaszewska-Zaremba D. Effect of Caffeine on the Inflammatory-Dependent Changes in the GnRH/LH Secretion in a Female Sheep Model. Int J Mol Sci 2024; 25:2663. [PMID: 38473910 DOI: 10.3390/ijms25052663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Caffeine is one of the most widely consumed psychoactive drugs in the world. It easily crosses the blood-brain barrier, and caffeine-interacting adenosine and ryanodine receptors are distributed in various areas of the brain, including the hypothalamus and pituitary. Caffeine intake may have an impact on reproductive and immune function. Therefore, in the present study performed on the ewe model, we decided to investigate the effect of peripheral administration of caffeine (30 mg/kg) on the secretory activity of the hypothalamic-pituitary unit which regulates the reproductive function in females during both a physiological state and an immune/inflammatory challenge induced by lipopolysaccharide (LPS; 400 ng/kg) injection. It was found that caffeine stimulated (p < 0.01) the biosynthesis of gonadotropin-releasing hormone (GnRH) in the hypothalamus of ewe under both physiological and inflammatory conditions. Caffeine also increased (p < 0.05) luteinizing hormone (LH) secretion in ewes in a physiological state; however, a single administration of caffeine failed to completely release the LH secretion from the inhibitory influence of inflammation. This could result from the decreased expression of GnRHR in the pituitary and it may also be associated with the changes in the concentration of neurotransmitters in the median eminence (ME) where GnRH neuron terminals are located. Caffeine and LPS increased (p < 0.05) dopamine in the ME which may explain the inhibition of GnRH release. Caffeine treatment also increased (p < 0.01) cortisol release, and this stimulatory effect was particularly evident in sheep under immunological stress. Our studies suggest that caffeine affects the secretory activity of the hypothalamic-pituitary unit, although its effect appears to be partially dependent on the animal's immune status.
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Affiliation(s)
- Andrzej Przemysław Herman
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Monika Tomczyk
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Maciej Wójcik
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Joanna Bochenek
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Hanna Antushevich
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Anna Herman
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-662 Warsaw, Poland
| | - Wiktoria Wiechetek
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
- Department of Ichthyology and Biotechnology in Aquaculture, Institute of Animal Sciences, University of Life Sciences, 02-786 Warsaw, Poland
| | - Aleksandra Szczepkowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland
| | - Elżbieta Marciniak
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
| | - Dorota Tomaszewska-Zaremba
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
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Rosen Vollmar AK, Weinberg CR, Baird DD, Wilcox AJ, Calafat AM, Deziel NC, Johnson CH, Jukic AMZ. Urinary phenol concentrations and fecundability and early pregnancy loss. Hum Reprod 2023; 38:139-155. [PMID: 36346334 PMCID: PMC10089295 DOI: 10.1093/humrep/deac230] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/22/2022] [Indexed: 11/09/2022] Open
Abstract
STUDY QUESTION Are urinary phenol concentrations of methylparaben, propylparaben, butylparaben, triclosan, benzophenone-3, 2,4-dichlorophenol or 2,5-dichlorophenol associated with fecundability and early pregnancy loss? SUMMARY ANSWER 2,5-dichlorophenol concentrations were associated with an increased odds of early pregnancy loss, and higher concentrations of butylparaben and triclosan were associated with an increase in fecundability. WHAT IS KNOWN ALREADY Phenols are chemicals with endocrine-disrupting potential found in everyday products. Despite plausible mechanisms of phenol reproductive toxicity, there are inconsistent results across few epidemiologic studies examining phenol exposure and reproductive function in non-fertility treatment populations. STUDY DESIGN, SIZE, DURATION Specimens and data were from the North Carolina Early Pregnancy Study prospective cohort of 221 women attempting to conceive naturally from 1982 to 1986. This analysis includes data from 221 participants across 706 menstrual cycles, with 135 live births, 15 clinical miscarriages and 48 early pregnancy losses (before 42 days after the last menstrual period). PARTICIPANTS/MATERIALS, SETTING, METHODS Participants collected daily first-morning urine specimens. For each menstrual cycle, aliquots from three daily specimens across the cycle were pooled within individuals and analyzed for phenol concentrations. To assess sample repeatability, we calculated intraclass correlation coefficients (ICCs) for each phenol. We evaluated associations between phenol concentrations from pooled samples and time to pregnancy using discrete-time logistic regression and generalized estimating equations (GEE), and early pregnancy loss using multivariable logistic regression and GEE. MAIN RESULTS AND THE ROLE OF CHANCE ICCs for within-person variability across menstrual cycles in pooled phenol concentrations ranged from 0.42 to 0.75. There was an increased odds of early pregnancy loss with 2,5-dichlorophenol concentrations although the CIs were wide (5th vs 1st quintile odds ratio (OR): 4.79; 95% CI: 1.06, 21.59). There was an increased per-cycle odds of conception at higher concentrations of butylparaben (OR: 1.62; 95% CI: 1.08, 2.44) and triclosan (OR: 1.49; 95% CI: 0.99, 2.26) compared to non-detectable concentrations. No associations were observed between these endpoints and concentrations of other phenols examined. LIMITATIONS, REASONS FOR CAUTION Limitations include the absence of phenol measurements for male partners and a limited sample size, especially for the outcome of early pregnancy loss, which reduced our power to detect associations. WIDER IMPLICATIONS OF THE FINDINGS This study is the first to use repeated pooled measures to summarize phenol exposure and the first to investigate associations with fecundability and early pregnancy loss. Within-person phenol concentration variability underscores the importance of collecting repeated samples for future studies. Exposure misclassification could contribute to differences between the findings of this study and those of other studies, all of which used one urine sample to assess phenol exposure. This study also contributes to the limited literature probing potential associations between environmental exposures and early pregnancy loss, which is a challenging outcome to study as it typically occurs before a pregnancy is clinically recognized. STUDY FUNDING/COMPETING INTEREST(S) This research was supported by the National Institute of Environmental Health Sciences of the National Institutes of Health (award number F31ES030594), the Intramural Research Program of the National Institutes of Health, the National Institute of Environmental Health Sciences (project numbers ES103333 and ES103086) and a doctoral fellowship at the Yale School of Public Health. The authors declare they have no competing interests to disclose. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Ana K Rosen Vollmar
- Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Clarice R Weinberg
- Biostatistics & Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle, NC, USA
| | - Donna D Baird
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle, NC, USA
| | - Allen J Wilcox
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle, NC, USA
| | - Antonia M Calafat
- Organic Analytical Toxicology Branch, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Nicole C Deziel
- Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Caroline H Johnson
- Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Anne Marie Z Jukic
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle, NC, USA
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3
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Fakioğlu M, Kalpaklı Y. Mechanism and behavior of caffeine sorption: affecting factors. RSC Adv 2022; 12:26504-26513. [PMID: 36275163 PMCID: PMC9479768 DOI: 10.1039/d2ra04501j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/06/2022] [Indexed: 12/04/2022] Open
Abstract
Caffeine is one of the emerging pollutants with a diverse chemical composition. It is mixed with the hydrobiota as a result of its high consumption, and when certain dose intervals are exceeded, it re-enters the human body through indirect routes such as plants, animals, soil, water, and the food chain, causing health problems that are difficult or impossible to treat, and irreversible environmental problems. This situation raises concerns about the presence of pollutants emerging in water resources, igniting interest in water treatment processes and the development of alternative methods. Although there are several methods for removing caffeine from aqueous media, adsorption is the most popular because it is less expensive than other methods and has the highest removal efficiency. Furthermore, it has the benefit of selectively attaching the molecules in solution. In this article, studies on the caffeine adsorption process have been examined, and the caffeine adsorption efficiency of various adsorbents has been summarized by compiling information such as pH, contact time, temperature, and concentration of adsorbent and adsorbate, which are considered as optimum processing conditions. The binding mechanism was investigated, and it was clearly stated how caffeine adheres to the adsorbent surface. Among the equilibrium adsorption isotherms, the isotherm model with the best agreement with the experimental data was attempted to be determined. Many studies clearly show that the process of developing environmentally friendly and high-capacity adsorbents in sustainable processes and in harmony with the circular economy is increasing day by day.
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Affiliation(s)
- Merve Fakioğlu
- Department of Chemical Engineering, Yildiz Technical University 34220 Davutpaşa Istanbul Turkey
| | - Yasemen Kalpaklı
- Department of Chemical Engineering, Yildiz Technical University 34220 Davutpaşa Istanbul Turkey
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Kumar M, Zilate S, Gupta C. Effect of Stress and Caffeine on Male Infertility. Cureus 2022; 14:e28487. [PMID: 36176863 PMCID: PMC9513285 DOI: 10.7759/cureus.28487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/27/2022] [Indexed: 02/06/2023] Open
Abstract
Caffeine is a natural psychoactive chemical found in beverages made from coffee. In addition, it is added by the manufacturers of a large number of sodas and energy drinks. It does this by stimulating both the brain and the central nervous system, enabling you to avoid being sleepy while still keeping you attentive. A state of emotional or physical tension is defined as stress. It can be induced through the experience of something or thinking of something that causes you to feel uncomfortable, irritated, or nervous. Your body's response to adversity or demand is what we call stress. Among couples, male infertility is common. A failure in spermatogenesis is accountable for nearly half of all occurrences of infertility in marriage. Ageing, psychological stress, diet, physical exercise, coffee, hot water, hot scrotum, and cell phone usage are some of the few modifiable lifestyle variables that have a role in the development of infertility. Many hypotheses have been proposed to establish the link between stress in the workplace, life events (war, earthquake, etc.), and inability to conceive have been linked to inferior or degraded semen quality. In this review, we will discuss the effect on male fertility of elements including quality of life (such as exercise, diet, and other alterations to one's daily routine) and psychological stress. In addition, the effects on male fertility of elevated scrotal temperature, improper dietary habits, and physical inactivity will be discussed. The loss in male fertility, mainly due to ageing, inappropriate lifestyles, and environmental factors, is a significant public health concern in this century. Couples can enhance their quality of life and increase their chances of naturally conceiving a child by altering their way of life and supplementing it with nutraceutical antioxidants and an organised educational, environmental, dietary, and physical exercise program.
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Purdue-Smithe AC, Kim K, Schliep KC, DeVilbiss EA, Hinkle SN, Ye A, Perkins NJ, Sjaarda LA, Silver RM, Schisterman EF, Mumford SL. Preconception caffeine metabolites, caffeinated beverage intake, and fecundability. Am J Clin Nutr 2022; 115:1227-1236. [PMID: 35030239 PMCID: PMC8970989 DOI: 10.1093/ajcn/nqab435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/29/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Caffeine is the most frequently used psychoactive substance in the United States and >90% of reproductive-age women report some amount of intake daily. Despite biological plausibility, previous studies on caffeine and fecundability report conflicting results. Importantly, prior studies measured caffeine exposure exclusively by self-report, which is subject to measurement error and does not account for factors that influence caffeine metabolism. OBJECTIVES Our objective was to examine associations between preconception serum caffeine metabolites, caffeinated beverage intake, and fecundability. METHODS Participants included 1228 women aged 18-40 y with a history of 1-2 pregnancy losses in the EAGeR (Effects of Aspirin in Gestation and Reproduction) trial. We prospectively evaluated associations of preconception caffeine metabolites (i.e., caffeine, paraxanthine, and theobromine) measured from 1191 serum samples untimed to a specific time of day, self-reported usual caffeinated beverage intakes at baseline, and time-varying cycle-average caffeinated beverage intake, with fecundability. Using Cox proportional hazards models, we estimated fecundability odds ratios (FORs) and 95% CIs according to each metabolite. Follow-up was complete for 89% (n = 1088) of participants. RESULTS At baseline, 85%, 73%, and 91% of women had detectable serum caffeine, paraxanthine, and theobromine, respectively. A total of 797 women became pregnant during ≤6 cycles of preconception follow-up. After adjusting for potential confounders, neither serum caffeine [tertile (T)3 compared with T1 FOR: 0.87; 95% CI: 0.71, 1.08], paraxanthine (T3 compared with T1 FOR: 0.92; 95% CI: 0.75, 1.14), nor theobromine (T3 compared with T1 FOR: 1.15; 95% CI: 0.95, 1.40) were associated with fecundability. Baseline intake of total caffeinated beverages was not associated with fecundability (>3 compared with 0 servings/d adjusted FOR: 0.99; 95% CI: 0.74, 1.34), nor was caffeinated coffee (>2 compared with 0 servings/d adjusted FOR: 0.93; 95% CI: 0.45, 1.92) or caffeinated soda (>2 servings/d adjusted FOR: 0.92; 95% CI: 0.71, 1.20). CONCLUSIONS Our findings are reassuring that caffeine exposure from usual low to moderate caffeinated beverage intake likely does not influence fecundability.This trial was registered at clinicaltrials.gov as NCT00467363.
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Affiliation(s)
- Alexandra C Purdue-Smithe
- Division of Women's Health, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Keewan Kim
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Karen C Schliep
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA
| | - Elizabeth A DeVilbiss
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Stefanie N Hinkle
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Aijun Ye
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Neil J Perkins
- Biostatistics and Bioinformatics Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Lindsey A Sjaarda
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Robert M Silver
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, UT, USA
| | - Enrique F Schisterman
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Optimizing natural fertility: a committee opinion. Fertil Steril 2021; 117:53-63. [PMID: 34815068 DOI: 10.1016/j.fertnstert.2021.10.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/08/2021] [Accepted: 10/08/2021] [Indexed: 01/08/2023]
Abstract
This committee opinion provides practitioners with suggestions for optimizing the likelihood of achieving pregnancy in couples or individuals attempting conception who have no evidence of infertility. This document replaces the document of the same name previously published in 2013 (Fertil Steril 2013;100:631-7).
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Affiliation(s)
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- The American Society for Reproductive Medicine, Birmingham, Alabama
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7
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Abstract
The purine alkaloid caffeine is the most widely consumed psychostimulant drug in the world and has multiple beneficial pharmacological activities, for example, in neurodegenerative diseases. However, despite being an extensively studied bioactive natural product, the mechanistic understanding of caffeine's pharmacological effects is incomplete. While several molecular targets of caffeine such as adenosine receptors and phosphodiesterases have been known for decades and inspired numerous medicinal chemistry programs, new protein interactions of the xanthine are continuously discovered providing potentially improved pharmacological understanding and a molecular basis for future medicinal chemistry. In this Perspective, we gather knowledge on the confirmed protein interactions, structure activity relationship, and chemical biology of caffeine on well-known and upcoming targets. The diversity of caffeine's molecular activities on receptors and enzymes, many of which are abundant in the CNS, indicates a complex interplay of several mechanisms contributing to neuroprotective effects and highlights new targets as attractive subjects for drug discovery.
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Affiliation(s)
- Giuseppe Faudone
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
| | - Silvia Arifi
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
| | - Daniel Merk
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
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8
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Teixeira MDS, Triginelli MV, Costa TDA, Lara LJC, Soto-Blanco B. Effects of Caffeine on Egg Quality and Performance of Laying Hens. Front Vet Sci 2020; 7:545359. [PMID: 33102566 PMCID: PMC7546903 DOI: 10.3389/fvets.2020.545359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 08/26/2020] [Indexed: 11/13/2022] Open
Abstract
This study's objective was to determine the effects of caffeine intake at various levels, incorporated in the layers' food, on performance and egg quality of hens. A total of 576 hens, aged 56 weeks, were used. The layers were fed rations containing 0 (control), 150, 300, or 450 ppm of caffeine for 12 weeks. During the experimental period, performance parameters (weight, feed consumption, and livability) and egg production and quality (weight, Haugh unit, percentages of yolk, albumen and eggshell, yolk color, eggshell thickness, and resistance, and calcium and phosphorus eggshell contents) were evaluated. The highest concentration of caffeine in the diet (450 ppm) promoted a significant increase in the mortality of hens (1.45% per week) compared to controls (0.23%). There was a reduction in feed consumption by hens, decreased egg production, and reduced eggshell thickness and percentage, with the increase of caffeine. The egg yolk percentage was increased, and the eggshell percentage was reduced in the groups treated with 300 and 450 ppm of caffeine. Furthermore, reduced eggshell thickness was found in all groups that received caffeine. However, it was found that 150 ppm of caffeine in the food did not cause significant changes in most egg production and quality parameters. In summary, caffeine consumption by laying hens increased mortality rate and promoted deleterious effects on chicken production and egg quality at concentrations of 300 and 450 ppm.
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Affiliation(s)
- Mailson da Silva Teixeira
- Department of Animal Science, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcela Viana Triginelli
- Department of Veterinary Clinics and Surgery, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thaís de Ataíde Costa
- Department of Animal Science, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Leonardo José Camargos Lara
- Department of Veterinary Clinics and Surgery, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Benito Soto-Blanco
- Department of Animal Science, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Bu FL, Feng X, Yang XY, Ren J, Cao HJ. Relationship between caffeine intake and infertility: a systematic review of controlled clinical studies. BMC WOMENS HEALTH 2020; 20:125. [PMID: 32546170 PMCID: PMC7298863 DOI: 10.1186/s12905-020-00973-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/10/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND For a long time, the relationship between caffeine consumption and infertility in the general population is unclear, this study is aimed to systematically review the evidence from any type of controlled clinical studies to explore whether caffeine intake is a risk factor for human infertility. METHODS Seven databases were searched from inception to May 2019. We included women/men without a history of infertility but were willing to have children in prospective studies and women/men who were diagnosed with infertility in retrospective studies. The observed exposure factor should be caffeine or caffeine containing beverage. Diagnosis of infertility or not for participants was the key outcome. The Newcastle-Ottawa scale (NOS) or Cochrane risk of bias tool were used to assess the methodological quality of included studies. Meta-analysis was conducted if there were acceptable clinical and statistical heterogeneity among studies. The GRADE method was used to assess the certainty of the evidence. RESULTS Four studies (one cohort study and three case-control studies) involving 12,912 participants were included. According NOS, the average score of case-control studies was 6, and the cohort study achieved 9. Meta-analysis and subgroup analysis were conducted. The results showed that low (OR 0.95, 95%CI 0.78-1.16), medium (OR 1.14, 95%CI 0.69-1.86) and high doses (OR 1.86, 95%CI 0.28-12.22) of caffeine intake may not increase the risk of infertility. The quality of the current evidence bodies were all low. CONCLUSION Our study provides low quality evidence that regardless of low, medium and high doses of caffeine intake do not appear increase the risk of infertility. But the conclusion should be treated with caution.
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Affiliation(s)
- Fan-Long Bu
- Centre for Evidence-based Chinese Medicine, Beijing University of Chinese Medicine, 11, the 3rd Ring Road East, Chaoyang District, Beijing, 100029, China
| | - Xue Feng
- China Association of Chinese Medicine, Beijing, 100029, China
| | - Xiao-Ying Yang
- Ineye Hospital of Chengdu University of TCM, Chengdu, 610036, China
| | - Jun Ren
- Beijing Cainiaohd Technology CO.,LTD, Beijing, 100124, China
| | - Hui-Juan Cao
- Centre for Evidence-based Chinese Medicine, Beijing University of Chinese Medicine, 11, the 3rd Ring Road East, Chaoyang District, Beijing, 100029, China.
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Qian J, Chen Q, Ward SM, Duan E, Zhang Y. Impacts of Caffeine during Pregnancy. Trends Endocrinol Metab 2020; 31:218-227. [PMID: 31818639 PMCID: PMC7035149 DOI: 10.1016/j.tem.2019.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/19/2022]
Abstract
Epidemiological studies have revealed that caffeine consumption during pregnancy is associated with adverse gestational outcomes, yet the underlying mechanisms remain obscure. Recent animal studies with physiologically relevant dosages have begun to dissect adverse effects of caffeine during pregnancy with respect to oviduct contractility, embryo development, uterine receptivity, and placentation that jointly contribute to pregnancy complications. Interestingly, caffeine's effects are highly variable between individual animals under well-controlled experimental settings, suggesting the possibility of epigenetic regulation of these phenotypes, in addition to genetic variants. Moreover, caffeine exposure during sensitive windows of pregnancy may induce epigenetic changes in the developing fetus or even the germ cells to cause adult-onset diseases in subsequent generations. We discuss these research frontiers in light of emerging data.
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Affiliation(s)
- Jingjing Qian
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qi Chen
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA
| | - Sean M Ward
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
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11
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Qian J, Zhang Y, Qu Y, Zhang L, Shi J, Zhang X, Liu S, Kim BH, Hwang SJ, Zhou T, Chen Q, Ward SM, Duan E, Zhang Y. Caffeine consumption during early pregnancy impairs oviductal embryo transport, embryonic development and uterine receptivity in mice. Biol Reprod 2019; 99:1266-1275. [PMID: 29982366 DOI: 10.1093/biolre/ioy155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 07/03/2018] [Indexed: 12/14/2022] Open
Abstract
Caffeine consumption has been widely used as a central nervous system stimulant. Epidemiological studies, however, have suggested that maternal caffeine exposure during pregnancy is associated with increased abnormalities, including decreased fertility, delayed conception, early spontaneous abortions, and low birth weight. The mechanisms underlying the negative outcomes of caffeine consumption, particularly during early pregnancy, remain unclear. In present study, we found that pregnant mice treated with moderate (5 mg/kg) or high (30 mg/kg) dosage of caffeine (intraperitoneally or orally) during preimplantation resulted in retention of early embryos in the oviduct, defective embryonic development, and impaired embryo implantation. Transferring normal blastocysts into the uteri of caffeine-treated pseudopregnant females also showed abnormal embryo implantation, thus indicating impaired uterine receptivity by caffeine administration. The remaining embryos that managed to implant after caffeine treatment also showed increased embryo resorption rate and abnormal development at mid-term stage, and decreased weight at birth. In addition to a dose-dependent effect, significant variations between individual mice under the same caffeine dosage were also observed, suggesting different sensitivities to caffeine, similar to that observed in human populations. Collectively, our data revealed that caffeine exposure during early pregnancy impaired oviductal embryo transport, embryonic development, and uterine receptivity, which are responsible for abnormal implantation and pregnancy loss. The study raises the concern of caffeine consumption during early stages of pregnancy.
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Affiliation(s)
- Jingjing Qian
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yunfang Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA.,University of Chinese Academy of Sciences, Beijing, China
| | - Yongcun Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Liwen Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Junchao Shi
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Xudong Zhang
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Shichao Liu
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Bo Hyun Kim
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Sung Jin Hwang
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Tong Zhou
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Qi Chen
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Sean M Ward
- Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Bhattacharya S, Evers JLH, Gameiro S, Negri E, Somigliana E, Vercellini P, Wellings K, Baird DT, Crosignani P, Glasier A, La Vecchia C. Towards a more pragmatic and wiser approach to infertility care. Hum Reprod 2019; 34:1165-1172. [DOI: 10.1093/humrep/dez101] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/13/2019] [Accepted: 05/17/2019] [Indexed: 12/25/2022] Open
Abstract
Abstract
Infertility represents a very peculiar area of medicine. Contrary to other areas, where signs and symptoms lead to a diagnosis, which in turn leads to a specific treatment, in reproduction the lack of signs and symptoms for more than 12 months suggests the diagnosis of ‘unexplained subfertility’, and if this condition has lasted for some years, couples qualify for IVF. Diagnosis and treatments can extend over long periods of time (even years) and the accuracy of the diagnostic armamentarium is not optimal. Uncertainty about diagnosis and the need for significant perseverance is demanding on both couples and physicians, and actually constitute a very favourable situation for overdiagnosis (‘unexplained subfertility’) and overtreatment (IVF) on one hand, and, on the other, it may also affect compliance with treatments. To improve our capacity to properly handle this challenging situation, increased attention should be given to the duration of pregnancy seeking. Initiating treatments earlier in older women is unwise because this population has a lower fecundity and, therefore, duration of pregnancy seeking is even more important to achieve a reliable diagnosis of infertility. Moreover, if the infertility work-up is unremarkable, duration of pregnancy seeking should be extended up to more than 2 years prior to making a diagnosis of unexplained infertility regardless of age. An adequate period of pregnancy seeking is also required for couples who are diagnosed with conditions that can interfere with fertility to avoid overdiagnosis and overtreatment. Indeed, most causes of infertility will reduce but not impair natural conception. Within this sometimes long-term management, physicians should also pay attention to detrimental life habits in order to optimize the chances of both natural and assisted reproduction technology -mediated pregnancy. Even if interventional studies are not conclusive, it is advisable to address the problems of obesity and smoking. Focussing on frequency of sexual intercourse may be also beneficial for natural conception. Finally, there is the need for improving our capacity to handle compliance. Providing information on the importance of persevering at the start of treatment, promoting shared decision-making and tackling patient, clinic and treatment causes of drop-out can all improve the overall chances of parenthood. Thus, we plead for a wiser and more pragmatic approach to infertility, paying more attention to these neglected, but in our opinion essential, aspects of infertility care.
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13
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Lyngsø J, Kesmodel US, Bay B, Ingerslev HJ, Nybo Andersen AM, Ramlau-Hansen CH. Impact of female daily coffee consumption on successful fertility treatment: a Danish cohort study. Fertil Steril 2019; 112:120-129.e2. [PMID: 31043232 DOI: 10.1016/j.fertnstert.2019.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/18/2019] [Accepted: 03/08/2019] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To investigate whether female coffee consumption affects the chance of achieving a clinical pregnancy and a live birth among women and couples receiving medically assisted reproduction (MAR) treatment. DESIGN Cohort study with prospectively collected exposure data. SETTING Public fertility clinic. PATIENT(S) A total of 1,708 women and potential partners undergoing fertility treatment, contributing with 1,511 intrauterine insemination (IUI) cycles, 2,870 in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) cycles, and 1,355 frozen embryo transfer cycles. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Clinical pregnancy and live birth in consecutive treatment cycles in the Danish national health registries, enabling complete follow-up, and estimation of the cumulative chance of live birth for three consecutive treatment cycles. RESULT(S) Among women receiving IVF or ICSI treatment, coffee consumption did not seem to affect the chance of achieving a clinical pregnancy and a live birth. Women treated with IUI who had a daily coffee consumption of 1-5 cups were more likely to achieve a clinical pregnancy (adjusted relative risk 1.49; 95% confidence interval, 1.05-2.11) and live birth (adjusted relative risk 1.53; 95% confidence interval, 1.06-2.21) compared with the reference group of coffee abstainers. CONCLUSION(S) Women consuming 1-5 cups versus none had a 1.5-fold higher probability of achieving a pregnancy or a live birth when receiving IUI. No associations were found, however, between women's daily coffee consumption and achieving a pregnancy or a live birth from IVF/ICSI.
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Affiliation(s)
- Julie Lyngsø
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus, Denmark; Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark.
| | | | - Bjørn Bay
- The Fertility Clinic, Regional Hospital Horsens, Horsens, Denmark
| | - Hans Jakob Ingerslev
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark; Fertility Unit, Aalborg University Hospital, Aalborg, Denmark
| | - Anne-Marie Nybo Andersen
- Department of Public Health, Section for Epidemiology, University of Copenhagen, Copenhagen, Denmark
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14
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Mínguez-Alarcón L, Chavarro JE, Gaskins AJ. Caffeine, alcohol, smoking, and reproductive outcomes among couples undergoing assisted reproductive technology treatments. Fertil Steril 2018; 110:587-592. [PMID: 30196942 PMCID: PMC11002791 DOI: 10.1016/j.fertnstert.2018.05.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 05/23/2018] [Indexed: 11/17/2022]
Abstract
During the past decade, as the use of assisted reproductive technologies (ART) has continued to increase worldwide, research investigating whether modifiable lifestyle factors, such as alcohol, caffeine, and smoking, may affect ART outcomes has grown. Despite the vast literature, there is still uncertainty regarding the effects of some of these exposures on ART outcomes. The objective of this review is to summarize the epidemiologic literature on intakes of caffeine and alcohol, smoking, and reproductive outcomes among women undergoing ART. Of the five epidemiologic studies on caffeine intake and ART outcomes, only one found a significant negative effect of caffeine intake on live birth following ART. There have been six epidemiologic studies exploring whether alcohol intake is associated with fertility outcomes among women undergoing ART. Three studies assessed current alcohol consumption and observed a negative effect on outcomes such as fertilization, embryo quality, and implantation. When alcohol intake in the year before treatment was assessed, no relationships were observed with clinical outcomes following ART. Finally, numerous epidemiologic studies and a handful of meta-analyses have confirmed that female current smokers have worse ART outcomes compared with nonsmokers. Although former smokers tend to have better ART outcomes than current smokers, very few individual studies have investigated the influence of smoking cessation on ART outcomes. Literature on male smoking, drinking, and caffeine habits in relation to ART outcomes is even sparser and inconsistent, making it difficult to draw strong conclusions on that topic. In summary, there is little evidence supporting a detrimental effect of moderate caffeine intake on ART outcomes. Current consumption of alcohol may have a negative effect on ART outcomes, but at present the evidence is limited. Women who currently smoke cigarettes have been consistently found to have poorer ART outcomes, including reduced live birth rates, but a quantification of the benefits of smoking cessation is lacking.
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Affiliation(s)
- Lidia Mínguez-Alarcón
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Audrey J Gaskins
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
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15
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Abadia L, Chiu YH, Williams PL, Toth TL, Souter I, Hauser R, Chavarro JE, Gaskins AJ. The association between pre-treatment maternal alcohol and caffeine intake and outcomes of assisted reproduction in a prospectively followed cohort. Hum Reprod 2018; 32:1846-1854. [PMID: 28854726 DOI: 10.1093/humrep/dex237] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 06/08/2017] [Indexed: 12/18/2022] Open
Abstract
STUDY QUESTION Is pre-treatment alcohol and caffeine intake associated with infertility treatment outcomes among women undergoing ART? SUMMARY ANSWER Low to moderate alcohol and caffeine intakes in the year prior to infertility treatment were not related to ART outcomes. WHAT IS KNOWN ALREADY Alcohol and caffeine intake have been found to be associated with infertility in some studies. Nevertheless, data on their relation with outcomes of infertility treatments are scarce and inconsistent. STUDY DESIGN, SIZE, DURATION We included 300 women (493 ART cycles) from the Environment and Reproductive Health Study, an ongoing cohort study (2006-2016). PARTICIPANTS/MATERIALS, SETTING, METHODS Pre-treatment intakes of alcohol and caffeine were assessed retrospectively using a validated food frequency questionnaire. Intermediate and clinical endpoints of ART were abstracted from electronic medical records. Generalized linear mixed models with random intercepts to account for multiple ART cycles per woman were used to evaluate the association with ART outcomes adjusting for age, BMI, smoking status, infertility diagnosis, protocol type, race, dietary patterns, and calories, vitamin B12 and folate intake. MAIN RESULTS AND THE ROLE OF CHANCE Median (range) pre-treatment alcohol and caffeine intakes were 5.6 (0.0-85.8) g/day and 124.9 (0.3-642.2) mg/day, respectively. The adjusted percentage of initiated cycles resulting in live birth (95% CI) for women in increasing categories of pre-treatment alcohol intake was 34% (20, 52%) for non-consumers, 46% (36, 57%) for 0.1-6 g/day, 41% (29, 53%) for 6.1-12 g/day, 42% (31, 55%) for 12.1-24 g/day, and 41% (22, 63%) for >24 g/day (P, trend = 0.87). The adjusted percentage of cycles resulting in live birth (95% CI) for women in increasing categories of caffeine intake was 46% (36-57%) for <50 mg/day, 44% (29, 60%) for 50.1-100 mg/day, 42% (31, 53%) for 100.1-200 mg/day, 40% (28, 53%) for 200.1-300 mg/day and 40% (21, 63%) for >300 mg/day (P, trend = 0.34). When specific types of alcoholic and caffeinated beverages were evaluated, no relations with ART treatment outcomes were observed. LIMITATIONS, REASONS FOR CAUTION Residual confounding by other diet and lifestyle factors cannot be ruled out owing to the observational nature of this study. It is also unclear how generalizable these results are to women who are conceiving without the assistance of ART. WIDER IMPLICATIONS OF THE FINDINGS Our results provide reassurance that low to moderate intakes of alcohol (e.g. ≤12 g/day) and caffeine (e.g. <200 mg/day) in the year prior to infertility treatment initiation do not have an adverse effect on intermediate or clinical outcomes of ART. STUDY FUNDING/COMPETING INTEREST(S) The authors are supported by National Institutes of Health (NIH) grants ES022955, R01ES009718, R01ES000002, P30DK46200 and L50-HD085359. No conflicts of interest to declare. TRIAL REGISTRATION NUMBER NCT00011713.
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Affiliation(s)
- L Abadia
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Y-H Chiu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - P L Williams
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - T L Toth
- Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - I Souter
- Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - R Hauser
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - J E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - A J Gaskins
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
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16
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Monteiro J, Alves MG, Oliveira PF, Silva BM. Pharmacological potential of methylxanthines: Retrospective analysis and future expectations. Crit Rev Food Sci Nutr 2018; 59:2597-2625. [PMID: 29624433 DOI: 10.1080/10408398.2018.1461607] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Methylated xanthines (methylxanthines) are available from a significant number of different botanical species. They are ordinarily included in daily diet, in many extremely common beverages and foods. Caffeine, theophylline and theobromine are the main methylxanthines available from natural sources. The supposedly relatively low toxicity of methylxanthines, combined with the many beneficial effects that have been attributed to these compounds through time, generated a justified attention and a very prolific ground for dedicated scientific reports. Methylxanthines have been widely used as therapeutical tools, in an intriguing range of medicinal scopes. In fact, methylxanthines have been/were medically used as Central Nervous System stimulants, bronchodilators, coronary dilators, diuretics and anti-cancer adjuvant treatments. Other than these applications, methylxanthines have also been hinted to hold other beneficial health effects, namely regarding neurodegenerative diseases, cardioprotection, diabetes and fertility. However, it seems now consensual that toxicity concerns related to methylxanthine consumption and/or therapeutic use should not be dismissed. Taking all the knowledge and expectations on the potential of methylxanthines into account, we propose a systematic look at the past and future of methylxanthine pharmacologic applications, discussing all the promise and anticipating possible constraints. Anyways, methylxanthines will still substantiate considerable meaningful research and discussion for years to come.
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Affiliation(s)
- João Monteiro
- Mass Spectrometry Centre, Department of Chemistry & CESAM, University of Aveiro, Campus Universitário de Santiago , Aveiro , Portugal
| | - Marco G Alves
- Department of Microscopy, Laboratory of Cell Biology, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto , Portugal
| | - Pedro F Oliveira
- Department of Microscopy, Laboratory of Cell Biology, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto , Portugal.,Institute of Health Research an Innovation (i3S), University of Porto , Porto , Portugal
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17
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Abstract
BACKGROUND Early-life factors can be associated with future health outcomes and are often measured by maternal recall. METHODS We used data from the North Carolina Early Pregnancy Study and Follow-up to characterize long-term maternal recall. We used data from the Early Pregnancy Study as the gold standard to evaluate the accuracy of prepregnancy weight, early pregnancy behaviors, symptoms and duration of pregnancy, and child's birthweight reported at follow-up, for 109 women whose study pregnancies had resulted in a live birth. RESULTS Most (81%) participants reported a prepregnancy weight at follow-up that correctly classified them by BMI category. Women reported experiencing pregnancy symptoms later at follow-up than what they reported in the Early Pregnancy Study. Accuracy of reporting of early pregnancy behaviors varied based on exposure. Overall, women who had abstained from a behavior were more likely to be classified correctly. Sensitivity of reporting was 0.14 for antibiotics, 0.30 for wine, 0.71 for brewed coffee, and 0.82 for vitamins. Most misclassification at follow-up was due to false-negative reporting. Among women who gave birth to singletons, 94% could report their child's correct birthweight within ½ pound and 86% could report duration of pregnancy within 7 days at follow-up. CONCLUSIONS Self-report of prepregnancy weight, duration of pregnancy, and child's birthweight after almost 30 years was good, whereas self-reported pregnancy-related exposures resulted in higher levels of reporting error. Social desirability appeared to influence women's report of their behaviors at follow-up. Self-reported assessment of confidence in the recalled information was unrelated to accuracy.
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18
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Gaskins AJ, Chavarro JE. Diet and fertility: a review. Am J Obstet Gynecol 2018; 218:379-389. [PMID: 28844822 PMCID: PMC5826784 DOI: 10.1016/j.ajog.2017.08.010] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/07/2017] [Accepted: 08/16/2017] [Indexed: 01/17/2023]
Abstract
The literature on the relationship between diet and human fertility has greatly expanded over the last decade, resulting in the identification of a few clear patterns. Intake of supplemental folic acid, particularly at doses higher than those recommended for the prevention of neural tube defects, has been consistently related to lower frequency of infertility, lower risk of pregnancy loss, and greater success in infertility treatment. On the other hand and despite promising evidence from animal models, vitamin D does not appear to exert an important role in human fertility in the absence of deficiency. Antioxidant supplementation does not appear to offer any benefits to women undergoing infertility treatment, but it appears to be beneficial when it is the male partner who is supplemented. However, the available evidence does not allow discerning which specific antioxidants, or at which doses, are responsible for this benefit. Long-chain omega-3 fatty acids appear to improve female fertility, although it remains unclear to what extent contamination of shared food sources, such as fish with high levels of environmental toxicants, can dampen this benefit. Lastly, adherence to healthy diets favoring seafood, poultry, whole grains, fruits, and vegetables are related to better fertility in women and better semen quality in men. The cumulative evidence has also piled against popular hypotheses. Dairy and soy, once proposed as reproductive toxicants, have not been consistently related to poor fertility. In fact, soy and soy supplements appear to exert a beneficial effect among women undergoing infertility treatment. Similarly, because data from large, high-quality studies continue to accumulate, the evidence of a potentially deleterious effect of moderate alcohol and caffeine intake on the ability to become pregnant seems less solid than it once did. While a complete picture of the role of nutrition on fertility is far from complete, much progress has been made. The most salient gaps in the current evidence include jointly considering female and male diets and testing the most consistent findings in randomized trials.
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Affiliation(s)
- Audrey J Gaskins
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA; Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
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19
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Í Soylu L, Jensen A, Juul KE, Kesmodel US, Frederiksen K, Kjaer SK, Hargreave M. Coffee, tea and caffeine consumption and risk of primary infertility in women: a Danish cohort study. Acta Obstet Gynecol Scand 2018; 97:570-576. [PMID: 29364517 DOI: 10.1111/aogs.13307] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 01/02/2018] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The aim of this study was to investigate whether consumption of coffee, tea and caffeine affects the risk of primary infertility in women. MATERIAL AND METHODS We selected nulliparous Danish women aged 20-29 years from a prospective cohort and retrieved information on coffee and tea consumption from a questionnaire and an interview at enrollment. We assessed the women's fertility by linkage to the Danish Infertility Cohort and retrieved information on children and vital status from the Civil Registration System. All 7574 women included for analysis were followed for primary infertility from the date of enrollment (1991-1993) until 31 December 2010. Analyses were performed with Cox proportional hazard models. RESULTS During follow up, primary infertility was diagnosed in 822 women. Compared with never consumers, the risk of primary infertility among women who drank coffee or tea was not affected. The risk of primary infertility was neither associated with an increasing number of daily servings of coffee (hazard ratio 1.00; 95% confidence interval (CI), 0.97-1.03) or tea (hazard ratio 1.01; 95% CI, 0.99-1.03) in consumers only. Concerning total caffeine consumption (from coffee and tea), the risk of infertility was similar among consumers compared with never consumers. Finally, none of the additional daily 100 mg of caffeine affected the risk among consumers only (hazard ratio 1.00; 95% CI 0.98-1.02). CONCLUSIONS In this population-based cohort study, not restricted to women seeking pregnancy, we found no association between coffee, tea or total caffeine consumption and the risk of primary infertility in women.
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Affiliation(s)
- Lív Í Soylu
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Allan Jensen
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Kirsten E Juul
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Ulrik S Kesmodel
- Department of Obstetrics and Gynecology, Herlev Hospital, Herlev, Denmark
| | - Kirsten Frederiksen
- Statistics, Bioinformatics and Registry, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Susanne K Kjaer
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark.,Department of Gynecology, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Marie Hargreave
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
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20
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Lyngsø J, Ramlau-Hansen CH, Bay B, Ingerslev HJ, Hulman A, Kesmodel US. Association between coffee or caffeine consumption and fecundity and fertility: a systematic review and dose-response meta-analysis. Clin Epidemiol 2017; 9:699-719. [PMID: 29276412 PMCID: PMC5733907 DOI: 10.2147/clep.s146496] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective The aim was to investigate whether coffee or caffeine consumption is associated with reproductive endpoints among women with natural fertility (ie, time to pregnancy [TTP] and spontaneous abortion [SAB]) and among women in fertility treatment (ie, clinical pregnancy rate or live birth rate). Design This study was a systematic review and dose-response meta-analysis including data from case-control and cohort studies. Methods An extensive literature search was conducted in MEDLINE and Embase, with no time and language restrictions. Also, reference lists were searched manually. Two independent reviewers assessed the manuscript quality using the Newcastle-Ottawa Scale (NOS). A two-stage dose-response meta-analysis was applied to assess a potential association between coffee/caffeine consumption and the outcomes: TTP, SAB, clinical pregnancy, and live birth. Heterogeneity between studies was assessed using Cochrane Q-test and I2 statistics. Publication bias was assessed using Egger's regression test. Results The pooled results showed that coffee/caffeine consumption is associated with a significantly increased risk of SAB for 300 mg caffeine/day (relative risk [RR]: 1.37, 95% confidence interval [95% CI]: 1.19; 1.57) and for 600 mg caffeine/day (RR: 2.32, 95% CI: 1.62; 3.31). No association was found between coffee/caffeine consumption and outcomes of fertility treatment (based on two studies). No clear association was found between exposure to coffee/caffeine and natural fertility as measured by fecundability odds ratio (based on three studies) or waiting TTP (based on two studies). Conclusion Results from this meta-analysis support the growing evidence of an association between coffee/caffeine intake and the risk of SAB. However, viewing the reproductive capacity in a broader perspective, there seems to be little, if any, association between coffee/caffeine consumption and fecundity. In general, results from this study are supportive of a precautionary principle advised by health organizations such as European Food Safety Authority (EFSA) and World Health Organization (WHO), although the advised limit of a maximum of two to three cups of coffee/200-300 mg caffeine per day may be too high.
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Affiliation(s)
- Julie Lyngsø
- Department of Public Health, Section for Epidemiology, Aarhus University, Aarhus
| | | | - Bjørn Bay
- The Fertility Clinic, Regional Horsens Hospital, Horsens
| | | | - Adam Hulman
- Department of Public Health, Section for Epidemiology, Aarhus University, Aarhus.,Danish Diabetes Academy, Odense
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21
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Faghfoori Z, Fazelian S, Shadnoush M, Goodarzi R. Nutritional management in women with polycystic ovary syndrome: A review study. Diabetes Metab Syndr 2017; 11 Suppl 1:S429-S432. [PMID: 28416368 DOI: 10.1016/j.dsx.2017.03.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 03/31/2017] [Indexed: 12/12/2022]
Abstract
Polycystic ovary syndrome (PCOS) is endocrine disorder in women of reproductive age, which leads to reproductive, hormonal and metabolic abnormalities. Due to the presence of insulin resistance, PCOS increases the risk of chronic diseases like type 2 diabetes, hypertension, lipid disorders, cardiovascular diseases and malignancies such as breast and endometrial cancer. The actual cause of this syndrome is unknown but environmental factors such as dietary habits play an important role in prevention and treatment and lifestyle modifications are the most important therapeutic strategies in these patients. The approach of the diet therapy in these patients must be to reach specific goals such as improving insulin resistance, metabolic and reproductive functions that will be possible through the design of low-calorie diet to achieve weight loss or maintaining a healthy weight, limit the intake of simple sugars and refined carbohydrates and intake foods with a low glycemic index, reduction of saturated and trans fatty acids and attention to possible deficiencies such as vitamin D, chromium and omega-3. Given the prevalence of overweight and obesity and insulin resistance, a relatively low reduction in weight, about 5%, can improve problems such as insulin resistance, high levels of androgens, reproductive system dysfunctions and fertility in these women.
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Affiliation(s)
- Zeinab Faghfoori
- Food (Salt) Safety Research Center, School of Nutrition and Food Sciences, Semnan University of Medical Sciences, Semnan, Iran
| | - Siavash Fazelian
- Songhor Healthcare Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Reza Goodarzi
- Imam Hospital of Borujerd, Lorestan University of Medical Sciences, Khorram-Abad, Iran.
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22
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Machtinger R, Gaskins AJ, Mansur A, Adir M, Racowsky C, Baccarelli AA, Hauser R, Chavarro JE. Association between preconception maternal beverage intake and in vitro fertilization outcomes. Fertil Steril 2017; 108:1026-1033. [PMID: 28985907 DOI: 10.1016/j.fertnstert.2017.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/06/2017] [Accepted: 09/06/2017] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To study whether maternal intake of beverage type affects IVF outcomes. DESIGN A prospective study. SETTING Tertiary, university-affiliated center. PATIENT(S) Three hundred forty women undergoing IVF from 2014 through 2016 for infertility as well as for pregenetic diagnosis for autosomal recessive diseases were enrolled during ovarian stimulation and completed a questionnaire describing their usual beverage consumption. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) IVF outcomes were abstracted from medical records. Total caffeine intake was estimated by summing the caffeine content for specific beverages multiplied by frequency of intake. Associations between specific types of beverages and IVF outcomes were analyzed using Poisson and logistic regression models adjusting for possible confounders. RESULT(S) Higher intake of sugared soda was associated with lower total, mature, and fertilized oocytes and top-quality embryos after ovarian stimulation. Women who consumed sugared soda had, on average, 1.1 fewer oocytes retrieved, 1.2 fewer mature oocytes retrieved, 0.6 fewer fertilized oocytes, and 0.6 fewer top-quality embryos compared with women who did not consume sugared soda. Furthermore, compared with women who did not drink sugared soda, the adjusted difference in percent of cycles resulting in live birth for women consuming 0.1-1 cups/day and >1 cup/day were -12% and -16%, respectively. No associations were found between consumption of coffee, caffeine, or diet sodas and IVF outcome. CONCLUSION(S) Sugared beverages, independent of their caffeine content, may be a bigger threat to reproductive success than caffeine and caffeinated beverages without added sugar.
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Affiliation(s)
- Ronit Machtinger
- Sheba Medical Center, Ramat-Gan and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Audrey J Gaskins
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Abdallah Mansur
- Sheba Medical Center, Ramat-Gan and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michal Adir
- Sheba Medical Center, Ramat-Gan and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Catherine Racowsky
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Andrea A Baccarelli
- Environmental Precision Biosciences Laboratory, Columbia University, Mailman School of Public Health, New York, New York
| | - Russ Hauser
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
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Fossum G, Gracia C, La Barbera A, Mersereau J, Odem R, Paulson R, Penzias A, Pisarska M, Rebar R, Reindollar R, Rosen M, Sandlow J, Vernon M. Optimizing natural fertility: a committee opinion. Fertil Steril 2016; 107:52-58. [PMID: 28228319 DOI: 10.1016/j.fertnstert.2016.09.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 09/13/2016] [Indexed: 12/12/2022]
Abstract
This Committee Opinion provides practitioners with suggestions for optimizing the likelihood of achieving pregnancy in couples/individuals attempting conception who have no evidence of infertility. This document replaces the document of the same name previously published in 2013, Fertil Steril 2013;100(3):631-7.
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Affiliation(s)
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- American Society for Reproductive Medicine, Birmingham, Alabama
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Wesselink AK, Wise LA, Rothman KJ, Hahn KA, Mikkelsen EM, Mahalingaiah S, Hatch EE. Caffeine and caffeinated beverage consumption and fecundability in a preconception cohort. Reprod Toxicol 2016; 62:39-45. [PMID: 27112524 DOI: 10.1016/j.reprotox.2016.04.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/22/2016] [Accepted: 04/21/2016] [Indexed: 10/21/2022]
Abstract
Caffeine is an adenosine receptor antagonist that may influence fertility by affecting ovulation, menstrual characteristics, or sperm quality. We studied the association between female and male preconception caffeine intake and fecundability in a North American prospective cohort study of 2135 pregnancy planners. Frequency of caffeinated beverage intake was self-reported at baseline. Outcome data were updated every 8 weeks until reported pregnancy; censoring occurred at 12 months. Adjusted fecundability ratios (FR) and 95% confidence intervals (CI) were estimated using proportional probabilities regression. Total caffeine intake among males, but not females, was associated with fecundability (FR for ≥300 vs. <100mg/day caffeine among males=0.72, 95% CI=0.54-0.96), although the association was not monotonic. With respect to individual beverages, caffeinated tea intake was associated with slight reductions in fecundability among females, and caffeinated soda and energy drink intake were associated with reduced fecundability among males.
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Affiliation(s)
- Amelia K Wesselink
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 USA.
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 USA; Slone Epidemiology Center, Boston University, 1010 Commonwealth Avenue, Boston, MA, 02215 USA
| | - Kenneth J Rothman
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 USA; RTI International, P.O. Box 12194, Research Triangle Park, NC, 27709 USA
| | - Kristen A Hahn
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 USA
| | - Ellen M Mikkelsen
- Department of Clinical Epidemiology, Aarhus University Hospital, Norrebrogade 44, DK-8000 Aarhus, Denmark
| | - Shruthi Mahalingaiah
- Department of Obstetrics & Gynecology, Boston University Medical Center, 85 East Concord Street, Boston, MA, 02118 USA
| | - Elizabeth E Hatch
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 USA
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Cao H, Ren J, Feng X, Yang G, Liu J. Is caffeine intake a risk factor leading to infertility? A protocol of an epidemiological systematic review of controlled clinical studies. Syst Rev 2016; 5:45. [PMID: 26979845 PMCID: PMC4791877 DOI: 10.1186/s13643-016-0221-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 03/07/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Previous studies showed that high dose of caffeine intake may induce some specific human reproductive system diseases, even lead to infertility. OBJECTIVES In consideration of the high consumption of caffeine according to the latest population-based survey, this review is aimed to systematically review the evidence from all controlled clinical studies of caffeine intake for infertility. DESIGNS Relevant randomized/quasi-randomized controlled trials, non-randomized clinical studies, cohort studies, and case-control studies will be included in this review. Participants will be either those without a history of infertility who are willing to have a baby (for prospective studies) or infertile patients with confirmed diagnosis (for retrospective studies). Caffeine or caffeine-containing beverage will be observed as the exposure factor. The key outcome will be the diagnosis of infertility in participants. All relevant published/unpublished or ongoing studies will be searched from seven databases and four online systems until December 2015. Two authors will screen the literatures and extract the data independently. Methodological quality of the included studies will be assessed by two authors according to either Risk of Bias Assessment or Newcastle-Ottawa Scale. We will use R software to analyze the data. Dose of caffeine will be quantified on a daily basis, and relative risk with their 95 % confidence interval will be measured. If data permit, meta-analysis and dose-response analysis will be conducted. Summary of findings tables will be generated using Guideline Development Tool online. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42015015714.
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Affiliation(s)
- Huijuan Cao
- Centre for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jun Ren
- World Federation of Chinese Medicine Societies, Beijing, China
| | - Xue Feng
- Centre for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Guoyan Yang
- Centre for Complementary Medicine Research, University of Western Sydney, Sydney, Australia
| | - Jianping Liu
- Centre for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
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Jukic AM, Calafat AM, McConnaughey DR, Longnecker MP, Hoppin JA, Weinberg CR, Wilcox AJ, Baird DD, Calafat AM, McConnaughey DR, Longnecker MP, Hoppin JA, Weinberg CR, Wilcox AJ, Baird DD. Urinary Concentrations of Phthalate Metabolites and Bisphenol A and Associations with Follicular-Phase Length, Luteal-Phase Length, Fecundability, and Early Pregnancy Loss. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:321-8. [PMID: 26161573 PMCID: PMC4786975 DOI: 10.1289/ehp.1408164] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 07/07/2015] [Indexed: 05/18/2023]
Abstract
BACKGROUND Certain phthalates and bisphenol A (BPA) show reproductive effects in animal studies and potentially affect human ovulation, conception, and pregnancy loss. OBJECTIVES We investigated these chemicals in relation to follicular- and luteal-phase lengths, time to pregnancy, and early pregnancy loss (within 6 weeks of the last menstrual period) among women attempting pregnancy. METHODS Women discontinuing contraception provided daily first-morning urine specimens and recorded days with vaginal bleeding for up to 6 months. Specimens had previously been analyzed for estrogen and progesterone metabolites and human chorionic gonadotropin. A total of 221 participants contributed 706 menstrual cycles. We measured 11 phthalate metabolites and BPA in pooled urine from three specimens spaced throughout each menstrual cycle. We analyzed associations between chemical concentrations and outcomes using linear mixed models for follicular- and luteal-phase lengths, discrete-time fecundability models for time to pregnancy, and logistic regression for early pregnancy loss. RESULTS Higher concentrations of monocarboxyoctyl phthalate (MCOP) were associated with shorter luteal phase [2nd tertile vs. 1st tertile: -0.5 days (95% CI: -0.9, -0.1), 3rd vs. 1st: -0.4 days (95% CI: -0.8, 0.01), p = 0.04]. BPA was also associated with shorter luteal phase [2nd vs. 1st: -0.8 days (95% CI: -1.2, -0.4), 3rd vs. 1st: -0.4 days (95% CI: -0.8, 0.02), p = 0.001]. CONCLUSIONS BPA and MCOP (or its precursors) were associated with shorter luteal phase. Menstrual cycle-specific estimates of urinary BPA and phthalate metabolites were not associated with detrimental alterations in follicular-phase length, time to pregnancy, or early pregnancy loss, and in fact, DEHP [di(2-ethylhexyl) phthalate] metabolites {MEOHP [mono(2-ethyl-5-oxohexyl) phthalate] and ΣDEHP} were associated with reduced early loss. These findings should be confirmed in future human studies.
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Affiliation(s)
- Anne Marie Jukic
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
- Address correspondence to A.M. Jukic, Epidemiology Branch, NIEHS, P.O. BOX 12233, Durham, NC 27709 USA. Telephone: (919) 541-2992. E-mail:
| | - Antonia M. Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Matthew P. Longnecker
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
| | - Jane A. Hoppin
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | | | - Allen J. Wilcox
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
| | - Donna D. Baird
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
| | - Antonia M. Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Matthew P. Longnecker
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
| | - Jane A. Hoppin
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | | | - Allen J. Wilcox
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
| | - Donna D. Baird
- Epidemiology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Durham, North Carolina, USA
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Ekaluo U, Ikpeme E, Uno U, Umeh S, Erem F. Protective Role of Aqueous Guava Leaf Extract Against Caffeine Induced Spermatotoxicity in Albino Rats. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/rjmp.2016.98.105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Dark HE, Kamimori GH, LaValle CR, Eonta SE. Effects of High Habitual Caffeine Use on Performance During One Night of Sleep Deprivation: Do High Users Need Larger Doses to Maintain Vigilance? JOURNAL OF CAFFEINE RESEARCH 2015. [DOI: 10.1089/jcr.2015.0013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Heather E. Dark
- Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Gary H. Kamimori
- Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Christina R. LaValle
- Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Stephanie E. Eonta
- Behavioral Biology Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland
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Gormack AA, Peek JC, Derraik JGB, Gluckman PD, Young NL, Cutfield WS. Many women undergoing fertility treatment make poor lifestyle choices that may affect treatment outcome. Hum Reprod 2015; 30:1617-24. [DOI: 10.1093/humrep/dev094] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 04/09/2015] [Indexed: 11/13/2022] Open
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Caffeine stimulates in vitro pituitary LH secretion in lipopolysaccharide-treated ewes. Reprod Biol 2015; 15:20-6. [DOI: 10.1016/j.repbio.2014.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/04/2014] [Accepted: 12/04/2014] [Indexed: 11/18/2022]
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Nishihama Y, Yoshinaga J, Iida A, Konishi S, Imai H. [Menstrual cycle length and source of its variation in female university students majoring in nursing sciences]. Nihon Eiseigaku Zasshi 2015; 70:139-148. [PMID: 25994346 DOI: 10.1265/jjh.70.139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVES To acquire fundamental knowledge on menstrual cycle and its intraindividual variation in healthy Japanese female students and their association with biological attributes, lifestyle and food habit. METHODS We asked female students of a nursing school to keep a diary of their menstruation over 5 consecutive months and to fill a questionnaire on their biological attributes, lifestyle and consumption frequency of some food items during the period from November 2012 to January 2014. RESULTS The mean±standard deviation (SD) of cycle lengths of 180 women (20.4±0.9 yrs) was 34.2±10.5 days. Of these 180 women, 141 had a cycle length within the normal range (25-38 days) while 10 had a shorter cycle and 20 had a longer cycle. The intraindividual variations of the cycle, defined as "range" (difference between the longest and shortest cycles of an individual) and "SD" (SD of mean of multiple lengths within an individual), were 11.4±10.3 and 7.9±11.8 days, respectively. Of 177 women, 73 and 109 had normal range and SD (≤6 days), respectively. The mean age of women with long cycles was older than that of women with short cycle (Kruscal-Wallis test, p<0.05), and women with greater intraindividual variations were older than those with small variations (U-test, p<0.05). Subjects with menstrual pain had greater "SD" than did those without pain (Chi-square test, p<0.05). Neither lifestyle nor food habit was associated with the length and intraindividual variations of the menstrual cycle. CONCLUSIONS The present results provided fundamental knowledge on the length and intraindividual variations of the menstrual cycle and the sources of these variations in female Japanese university students.
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Rossi BV, Abusief M, Missmer SA. Modifiable Risk Factors and Infertility: What are the Connections? Am J Lifestyle Med 2014; 10:220-231. [PMID: 27594813 DOI: 10.1177/1559827614558020] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Infertility is a relatively common condition, greatly affecting couples medically and psychologically. Although infertility treatment is safe, it can be time-intensive, expensive and increase the risk of multiple gestations. Thus, to reduce costs and risks, couples may initially consider lifestyle change to increase their fertility and chances of pregnancy. For many of the diet factors studied (for example: caffeine, soy, protein, iron), there are conflicting data. However, there are some items men and women consume that are detrimental to fertility, such as alcohol and tobacco. The data on exercise are varied but may have an effect on ovulation and fertility - positive or negative. Body mass index appears to impact fertility also, with obesity in both men and women negatively affecting pregnancy rates. In addition, there remains concern and a growing body of research on environmental toxin exposures and reproductive health. Finally, supporting patients through infertility diagnosis and treatment is critical, as psychological stress may impact conception. It is imperative that the relationship between lifestyle factors and fertility continue to be explored as to lessen the morbidity associated with infertility.
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Affiliation(s)
- Brooke V Rossi
- Department of Obstetrics and Gynecology, University Hospitals/Case Western Reserve School of Medicine. 1000 Auburn Drive, Suite 310, Beachwood, OH 44122. 216-285-5028
| | - Mary Abusief
- Fertility Physicians of Northern California, Palo Alto, CA 94301
| | - Stacey A Missmer
- Department of Obstetrics, Gynecology, and Reproductive Biology; Brigham and Women's Hospital and Harvard Medical School; Boston, Massachusetts 02115; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115; Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts 02115
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Bin Mahmoud AZ, Makhdoom AN, Mufti LA, Alreheli RS, Farghal RG, Aljaouni SE. Association between menstrual disturbances and habitual use of caffeine. J Taibah Univ Med Sci 2014. [DOI: 10.1016/j.jtumed.2014.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Greenwood DC, Thatcher NJ, Ye J, Garrard L, Keogh G, King LG, Cade JE. Caffeine intake during pregnancy and adverse birth outcomes: a systematic review and dose-response meta-analysis. Eur J Epidemiol 2014; 29:725-34. [PMID: 25179792 DOI: 10.1007/s10654-014-9944-x] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 08/12/2014] [Indexed: 12/24/2022]
Abstract
Caffeine is commonly consumed during pregnancy, crosses the placenta, with fetal serum concentrations similar to the mother's, but studies of birth outcome show conflicting findings. We systematically searched Medline and Embase for relevant publications. We conducted meta-analysis of dose-response curves for associations between caffeine intake and spontaneous abortion, stillbirth, preterm delivery, low birth weight and small for gestational age (SGA) infants. Meta-analyses included 60 unique publications from 53 cohort and case-control studies. An increment of 100 g caffeine was associated with a 14 % (95 % CI 10-19 %) increase in risk of spontaneous abortion, 19 % (5-35 %) stillbirth, 2 % (-2 to 6 %) preterm delivery, 7 % (1-12 %) low birth weight, and 10 % (95 % CI 6-14 %) SGA. There was substantial heterogeneity in all models, partly explained by adjustment for smoking and previous obstetric history, but not by prospective assessment of caffeine intake. There was evidence of small-study effects such as publication bias. Greater caffeine intake is associated with an increase in spontaneous abortion, stillbirth, low birth weight, and SGA, but not preterm delivery. There is no identifiable threshold below which the associations are not apparent, but the size of the associations are generally modest within the range of usual intake and are potentially explained by bias in study design or publication. There is therefore insufficient evidence to support further reductions in the maximum recommended intake of caffeine, but maintenance of current recommendations is a wise precaution.
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Affiliation(s)
- Darren C Greenwood
- Division of Epidemiology and Biostatistics, School of Medicine, University of Leeds, Leeds, LS2 9JT, UK,
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Sapra KJ, McLain AC, Maisog JM, Sundaram R, Buck Louis GM. Successive time to pregnancy among women experiencing pregnancy loss. Hum Reprod 2014; 29:2553-9. [PMID: 25164026 DOI: 10.1093/humrep/deu216] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
STUDY QUESTION Is time to pregnancy (TTP) similar across successive pregnancy attempts among women experiencing pregnancy loss? SUMMARY ANSWER TTP after a loss may be longer compared with TTP before a loss. WHAT IS KNOWN ALREADY Two pregnancy cohort studies have reported that TTP is similar across pregnancy attempts in fertile women. However, this has not been investigated among women experiencing pregnancy losses. STUDY DESIGN, SIZE, DURATION Data for this analysis come from the Longitudinal Investigation of Fertility and the Environment Study, a population-based, preconception cohort of couples attempting pregnancy. During 2005-2009, recruitment was targeted to 16 counties in Michigan and Texas with reported exposures to persistent environmental chemicals. A total of 501 couples were recruited and followed for up to 12 months of pregnancy attempts allowing for continued participation of women with pregnancy losses until censoring. PARTICIPANTS, SETTING, METHODS We assessed TTP among 70 couples recruited upon discontinuing contraception for purposes of becoming pregnant and experiencing ≥1 prospectively observed pregnancy losses during 12 months of trying. There were 61 couples who contributed two pregnancy attempts and 9 who contributed three. Women were instructed in the use of urine-based home fertility monitors to time intercourse relative to ovulation and recorded their bleeding patterns in daily journals. TTP was defined as the number of menstrual cycles taken to achieve pregnancy. Women were also instructed in the use of home digital pregnancy tests and asked to begin pregnancy testing on the day of expected menses. Women recorded the results of their pregnancy tests in a daily journal with a single positive pregnancy test result indicating an hCG-confirmed pregnancy. Pregnancy losses were ascertained from a subsequent recorded negative pregnancy test or clinically confirmed loss. We estimated fecundability odds ratios (FORs) comparing subsequent to first TTP using discrete Cox models with robust standard errors, accounting for cycles off contraception before study entry and adjusting for maternal age, body mass index, reproductive history and time-varying cigarette, alcohol and caffeine usage while trying. MAIN RESULTS AND THE ROLE OF CHANCE The mean female age was 30.3 ± 4.3 years; 21% had a prior pregnancy loss before study entry. Of the second and third attempts, 59 and 43%, respectively, were longer compared with the first attempt. FORs <1 suggest reduced fecundability or a longer TTP when comparing the second with the first attempt (0.42, 95% confidence interval (CI): 0.28, 0.65), and similarly for the third relative to the first attempt (0.64, 95% CI: 0.18, 2.36). TTP in the second attempt was a median of 1 cycle longer (interquartile range: 0, 3 cycles) compared with TTP in the first attempt. LIMITATIONS, REASONS FOR CAUTION As this is the first study to investigate successive TTP exclusively among women experiencing pregnancy loss, our findings await corroboration since most losses occurred early in gestation. As such, the generalizability of our findings for all pregnancy losses awaits further research. We also had limited power to detect a reduction in fecundability for the third compared with first pregnancy attempt. WIDER IMPLICATIONS OF THE FINDINGS Unlike fertile women, TTP in women experiencing early pregnancy losses may trend towards longer subsequent attempts. If the findings are corroborated, women experiencing losses may benefit from counselling regarding trying times. STUDY FUNDING/COMPETING INTERESTS This research was supported by the Intramural Research Program of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (contracts N01-HD-3-3355, N01-HD-3-3356 and NOH-HD-3-3358). K.J.S. was supported by an Intramural Research Training Award from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, Division of Intramural Population Health Research. The authors have no conflicts of interest to declare.
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Affiliation(s)
- K J Sapra
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, MD 20852, USA
| | - A C McLain
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | | | - R Sundaram
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, MD 20852, USA
| | - G M Buck Louis
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, MD 20852, USA
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Gupta S, Fedor J, Biedenharn K, Agarwal A. Lifestyle factors and oxidative stress in female infertility: is there an evidence base to support the linkage? ACTA ACUST UNITED AC 2014. [DOI: 10.1586/17474108.2013.849418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Infertility is a major, multifaceted issue worldwide whose prevalence is increasing in both high- and low-income countries. The reasons are numerous, and may differ among world regions, but lifestyle and nutritional factors, epidemic infections, and sexually transmitted diseases are major determinants in most latitudes. Three other reasons may explain the increasing incidence of infertility. First, owing to the widespread use of contraception, the choice of delaying the first pregnancy until the third decade of life places men and women at higher risk for sexually transmitted diseases, and women at higher risk for uterine fibroids, endometriosis, polycystic ovary syndrome, and chronic anovulation. Second, prolonged exposure to chronic stress and environmental pollutants may play a critical role in decreasing fertility. Third, gonadotoxic oncologic treatments allow many patients to survive cancer, at the cost of their fertility. This consideration may justify the development of treatments that preserve fertility.
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Affiliation(s)
- Felice Petraglia
- Department of Molecular and Developmental Medicine, Obstetrics and Gynecology, University of Siena, Policlinico "Le Scotte", Siena, Italy.
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Optimizing natural fertility: a committee opinion. Fertil Steril 2013; 100:631-7. [DOI: 10.1016/j.fertnstert.2013.07.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 07/09/2013] [Indexed: 11/29/2022]
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Effect of long-term caffeine administration to mice on in vitro fertilization and embryo development using oocytes. Reprod Med Biol 2013; 12:167-171. [PMID: 29699142 DOI: 10.1007/s12522-013-0150-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 04/29/2013] [Indexed: 10/26/2022] Open
Abstract
Purpose To evaluate the effect of long-term caffeine administration to mice on in vitro fertilization (IVF) of oocytes. Methods Mice were injected with different dosages (0, 0.1, and 1.0 mg/mouse/converted day) of caffeine for one month. Subsequently, the fertilization rate and embryo development to blastocyst stage were evaluated in IVF using oocytes from the mice. Results The retrieved average oocyte rate was significantly lower (27.4) in mice injected with 1.0 mg caffeine than in the control group (36.5; P < 0.05); the fertilization rate was significantly different between the 0 mg (317/401; 79.1 %) and 1.0 mg group (199/301; 66.1 %) (P < 0.05). At 96 h after insemination, the blastocyst formation rate was significantly decreased in the 1.0 mg group (94/199; 47.2 %) compared with the control (0 mg) group (237/317; 74.8 %) and 0.1 mg group (226/323; 70 %) (P < 0.05). When 1.0 mg caffeine was administered for two weeks, embryo development was significantly impacted. Conclusions Our findings suggest that caffeine administration negatively impacts oocytogenesis and embryonic development after IVF.
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Dorostghoal M, Erfani Majd N, Nooraei P. Maternal caffeine consumption has irreversible effects on reproductive parameters and fertility in male offspring rats. Clin Exp Reprod Med 2012; 39:144-52. [PMID: 23346524 PMCID: PMC3548072 DOI: 10.5653/cerm.2012.39.4.144] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 10/06/2012] [Accepted: 10/23/2012] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE Concerns are growing about the decrease in male reproductive health. Caffeine is one of the popular nutrients that has been implicated as a risk factor for infertility. In the present study, we examined whether in utero and lactational exposure to caffeine affects the reproductive function of the offspring of rats. METHODS Pregnant rats received caffeine via drinking water during gestation (26 and 45 mg/kg) and lactation (25 and 35 mg/kg). Body and reproductive organ weight, seminiferous tubule diameter, germinal epithelium height, sperm parameters, fertility rate, number of implantations, and testosterone level of the offspring were assessed from birth to adulthood. RESULTS Significant dose-related decreases were observed in the body and reproductive organ weight, seminiferous tubule diameter, and germinal epithelium height of the offspring. Sperm density had declined significantly in offspring of the low-dose and high-dose groups, by 8.81% and 19.97%, respectively, by postnatal day 150. The number of viable fetuses had decreased significantly in females mated with male offspring of the high-dose group at postnatal days 60, 90, 120, and 150. There were also significant reductions in testosterone levels of high-dose group offspring from birth to postnatal day 150. CONCLUSION It is concluded that maternal caffeine consumption impairs gonadal development and has long-term adverse effects on the reproductive efficiency of male offspring rats.
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Affiliation(s)
- Mehran Dorostghoal
- Department of Biology, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Abstract
PURPOSE OF REVIEW To discuss the dietary factors that influence the reproductive outcomes in patients undergoing fertility treatment. RECENT FINDINGS Recent studies have found that a woman's nutritional status and dietary intake can play a role in her reproductive health. In addition to weight, specific dietary patterns rich in omega-3 fatty acids and micronutrients such as vitamin D have all been shown to impact fertility. Although data regarding diet and fertility treatment are limited with many studies lacking the statistical power to validate findings, recent studies corroborate the importance of a balanced diet and appropriate weight management program while undergoing fertility treatment. SUMMARY The growing reliance on assisted reproductive technologies in conjunction with the increase in the general population's weight and poor nutritional status has raised questions as to the effects of dietary status and weight on fertility treatment outcome. A review of findings thus far indicates potential avenues for future research to further elucidate cytotoxic and genotoxic dietary factors as well as dietary elements that may improve oocyte quality, aid implantation, as well as pregnancy maintenance during the periconception period.
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Abstract
BACKGROUND Many epidemiologic studies have evaluated the association between caffeine and fertility, with inconsistent results. Some studies suggest that various caffeine-containing beverages may affect fertility differently. METHODS We evaluated the relation of caffeine, coffee, tea, and sodas with time to pregnancy in a prospective cohort study of 3628 women planning a pregnancy, in Denmark (2007-2010). Women reported beverage intake at baseline and every 8 weeks during follow-up until they became pregnant or for up to 12 cycles. We used discrete-time Cox proportional hazards regression to estimate fecundability ratios (FRs) and 95% confidence intervals (CIs), controlling for potential confounders. RESULTS There was little relation between fecundability and caffeine intake of 300+ mg/day compared with < 100 mg/day (FR = 1.04 [95% CI = 0.90-1.21]) or coffee intake of 3+ servings/day compared with none (1.05 [0.85-1.33]). Soda consumption was associated with reduced fecundability: for all types of sodas combined, the adjusted FRs were 0.89 (0.80-0.98), 0.85 (0.71-1.02), 0.84 (0.57-1.25), and 0.48 (0.21-1.13) for < 1, 1, 2, and 3+ servings per day, respectively, compared with none. Tea drinking was associated with a slight increase in fecundability, with FR = 1.27 (0.98-1.64) for 2+ servings/day versus none. CONCLUSION In this prospective study of time to pregnancy, the association between caffeine intake and fertility differed by beverage type. Although we controlled for many confounders, our findings of reduced fecundability among soda drinkers and increased fecundability among tea drinkers could have resulted from confounding by unmeasured lifestyle characteristics.
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Huang H, Hansen KR, Factor-Litvak P, Carson SA, Guzick DS, Santoro N, Diamond MP, Eisenberg E, Zhang H. Predictors of pregnancy and live birth after insemination in couples with unexplained or male-factor infertility. Fertil Steril 2012; 97:959-67. [PMID: 22270557 DOI: 10.1016/j.fertnstert.2012.01.090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 01/01/2012] [Accepted: 01/03/2012] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To identify risk factors for pregnancy outcomes in couples treated with intracervical or intrauterine insemination, with or without superovulation for unexplained or male-factor infertility. DESIGN Secondary analysis of data from a randomized superovulation and intrauterine insemination trial. SETTING Academic medical centers. INTERVENTION(S) Treatment continued for four cycles unless pregnancy was achieved. PATIENT(S) Out of 932 couples randomized to four treatment groups, 664 couples who had completed the lifestyle questionnaires were assessed for occurrence of pregnancy and live birth. MAIN OUTCOME MEASURE(S) Pregnancy and live birth. RESULT(S) The pregnancy and live birth rates were significantly higher in couples in which the female partners reported that they had consumed coffee or tea in the past or drank alcoholic beverages in the past (past users) compared with those who had never consumed coffee, tea, or alcoholic beverages. Past users also had significantly higher pregnancy and live birth rates than those currently consuming coffee or tea or alcoholic beverages. Demographic, occupational exposure, and other lifestyle factors were not significant. CONCLUSION(S) Couples in which the female partners drank coffee, tea, or alcoholic beverages in the past had higher pregnancy and live birth rates compared with never or current users. When discontinuing these habits, they might have made other lifestyle changes to improve the pregnancy outcome.
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Affiliation(s)
- Hao Huang
- Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut, USA
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Taylor KC, Small CM, Dominguez CE, Murray LE, Tang W, Wilson MM, Bouzyk M, Marcus M. alcohol, smoking, and caffeine in relation to fecundability, with effect modification by NAT2. Ann Epidemiol 2012; 21:864-72. [PMID: 21684175 DOI: 10.1016/j.annepidem.2011.04.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 04/05/2011] [Accepted: 04/29/2011] [Indexed: 11/26/2022]
Abstract
PURPOSE Common polymorphisms in the N-acetyltransferase-2 (NAT2) metabolic enzyme determine slow or rapid acetylator phenotypes. We investigated the effects of alcohol, smoking, and caffeine on fecundability, and determined whether the effects were modified by NAT2. METHODS Three NAT2 polymorphisms were genotyped in 319 women office workers participating in a prospective pregnancy study (1990-1994). Women were ages 20-41 and at risk for pregnancy. Discrete-time survival analysis was used to determine the effects of alcohol, smoking, and caffeine on fecundability and evaluate effect modification by NAT2. RESULTS We followed 319 women (161 slow acetylators, 158 rapid) for an average of 8 menstrual cycles, resulting in 124 pregnancies. There was no effect of caffeine on fecundability. Drinking ≥1 alcoholic drink per day and current smoking were significantly associated with reduced fecundability, but only among slow acetylators (adjusted fecundability odds ratio [FOR] for smoking = 0.34; 95% confidence interval, 0.22-0.90; adjusted FOR for ≥1 drink per day = 0.20; 0.05-0.92). There was no effect among rapid acetylators. CONCLUSIONS NAT2 status significantly modified the effects of alcohol and smoking on fecundability, emphasizing the importance of incorporating genetic and metabolic information in studies of reproductive health. Replication of this study is warranted.
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Choi JH, Ryan LM, Cramer DW, Hornstein MD, Missmer SA. Effects of Caffeine Consumption by Women and Men on the Outcome of In Vitro Fertilization. JOURNAL OF CAFFEINE RESEARCH 2011; 1:29-34. [PMID: 24761261 DOI: 10.1089/jcr.2011.0001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The objective of this study was to estimate the association between caffeine consumption and in vitro fertilization (IVF) outcomes. METHODS A total of 2474 couples were prospectively enrolled prior to undergoing their first cycle of IVF, contributing a total of 4716 IVF cycles. Discrete survival analysis adjusting for observed confounders was applied to quantify the relation between caffeine consumption and livebirth. Secondary outcomes of interest were oocyte retrieval, peak estradiol level, implantation rate, and fertilization rate. RESULTS Overall, caffeine consumption by women was not significantly associated with livebirth (ptrend=0.74). Compared with women who do not drink caffeine, the likelihood of livebirth was not significantly different for women who drank low (>0-800 mg/week; odds ratio [OR]=1.00, 95% confidence interval [CI])=0.83-1.21), moderate (>800-1400 mg/week; OR=0.89, 95% CI=0.71-1.12), or high levels of caffeine (>1400 mg/week; OR=1.07, 95% CI=0.85-1.34). Greater caffeine intake by women was associated with a significantly lower peak estradiol level (ptrend=0.03), but was not associated with the number of oocytes retrieved (ptrend=0.75), fertilization rate (ptrend=0.10), or implantation rate (ptrend=0.23). There was no significant association between caffeine intake by men and livebirth (ptrend=0.27), fertilization (ptrend=0.72), or implantation (ptrend=0.24). The individual effects of consumption of coffee, tea, or soda by women or men were not related to livebirth. CONCLUSION Caffeine consumption by women or men was not associated with IVF outcomes.
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Affiliation(s)
- Jamie H Choi
- Department of Biostatistics, Harvard School of Public Health , Boston, Massachusetts
| | - Louise M Ryan
- Department of Biostatistics, Harvard School of Public Health , Boston, Massachusetts
| | - Daniel W Cramer
- Department of Obstetrics, Gynecology, and Reproductive Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
| | - Mark D Hornstein
- Department of Obstetrics, Gynecology, and Reproductive Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
| | - Stacey A Missmer
- Department of Obstetrics, Gynecology, and Reproductive Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts. ; Department of Epidemiology, Harvard School of Public Health , Boston, Massachusetts. ; Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
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Sadeu JC, Hughes CL, Agarwal S, Foster WG. Alcohol, drugs, caffeine, tobacco, and environmental contaminant exposure: reproductive health consequences and clinical implications. Crit Rev Toxicol 2010; 40:633-52. [PMID: 20662712 DOI: 10.3109/10408444.2010.493552] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Reproductive function and fertility are thought to be compromised by behaviors such as cigarette smoking, substance abuse, and alcohol consumption; however, the strength of these associations are uncertain. Furthermore, the reproductive system is thought to be under attack from exposure to environmental contaminants, particularly those chemicals shown to affect endocrine homeostasis. The relationship between exposure to environmental contaminants and adverse effects on human reproductive health are frequently debated in the scientific literature and these controversies have spread into the lay press drawing increased public and regulatory attention. Therefore, the objective of the present review was to critically evaluate the literature concerning the relationship between lifestyle exposures and adverse effects on fertility as well as examining the evidence for a role of environmental contaminants in the purported decline of semen quality and the pathophysiology of subfertility, polycystic ovarian syndrome, and endometriosis. The authors conclude that whereas cigarette smoking is strongly associated with adverse reproductive outcomes, high-level exposures to other lifestyle factors are only weakly linked with negative fertility impacts. Finally, there is no compelling evidence that environmental contaminants, at concentrations representative of the levels measured in contemporary biomonitoring studies, have any effect, positive or negative, on reproductive health in the general population. Further research using prospective study designs with robust sample sizes are needed to evaluate testable hypotheses that address the relationship between exposure and adverse reproductive health effects.
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Affiliation(s)
- J C Sadeu
- Reproductive Biology Division, Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
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Anderson K, Nisenblat V, Norman R. Lifestyle factors in people seeking infertility treatment - A review. Aust N Z J Obstet Gynaecol 2010; 50:8-20. [PMID: 20218991 DOI: 10.1111/j.1479-828x.2009.01119.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Clinical infertility is a prevalent problem with significant financial and psychosocial costs. Modifiable lifestyle factors exist that may affect a person's time to conception and their chance of having a healthy, live birth. However, no guideline delineates what preconception advice should be offered to people presenting for infertility treatment. AIM The aim of this article is to review the literature regarding modifiable lifestyle factors in people seeking infertility treatment. RESULTS A person's time to pregnancy and their chance of having a healthy, live birth may be affected by factors such as weight, vitamin and iodine intake, alcohol and caffeine consumption, smoking, substance abuse, stress, environmental pollutants, vaccinations and oxidative stress. CONCLUSIONS Advice on modifiable lifestyle factors should be given to people presenting for infertility treatment to help them make positive changes that may improve their chances of pregnancy and delivering a healthy, live baby. Developing a guideline for this would be a prudent step towards helping clinicians to implement this aspect of preconception care.
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Affiliation(s)
- Kirsty Anderson
- Level 6 Medical School, Adelaide, South Australia, Australia.
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