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Barrea L, Pugliese G, Frias-Toral E, El Ghoch M, Castellucci B, Chapela SP, Carignano MDLA, Laudisio D, Savastano S, Colao A, Muscogiuri G. Coffee consumption, health benefits and side effects: a narrative review and update for dietitians and nutritionists. Crit Rev Food Sci Nutr 2023; 63:1238-1261. [PMID: 34455881 DOI: 10.1080/10408398.2021.1963207] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Coffee is one of the most popular beverages worldwide; however, its impact on health outcomes and adverse effects is not fully understood. The current review aims to establish an update about the benefits of coffee consumption on health outcomes highlighting its side effects, and finally coming up with an attempt to provide some recommendations on its doses. A literature review using the PubMed/Medline database was carried out and the data were summarized by applying a narrative approach using the available evidence based on the literature. The main findings were the following: first, coffee may contribute to the prevention of inflammatory and oxidative stress-related diseases, such as obesity, metabolic syndrome and type 2 diabetes; second, coffee consumption seems to be associated with a lower incidence of several types of cancer and with a reduction in the risk of all-cause mortality; finally, the consumption of up to 400 mg/day (1-4 cups per day) of caffeine is safe. However, the time gap between coffee consumption and some drugs should be taken into account in order to avoid interaction. However, most of the data were based on cross-sectional or/and observational studies highlighting an association of coffee intake and health outcomes; thus, randomized controlled studies are needed in order to identify a causality link.
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Affiliation(s)
- Luigi Barrea
- Dipartimento di Scienze Umanistiche, Università Telematica Pegaso, Via Porzio, Centro Direzionale, isola F2, 80143 Napoli, Italy
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Gabriella Pugliese
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Evelyn Frias-Toral
- School of Medicine, Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
| | - Marwan El Ghoch
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, P.O. Box 11-5020 Riad El Solh, Beirut 11072809, Lebanon
| | - Bianca Castellucci
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Sebastián Pablo Chapela
- Universidad de Buenos Aires, Facultad de Medicina, Departamento de Bioquímica Humana, Buenos Aires, Argentina
- Hospital Británico de Buenos Aires, Departamento de Terapia Intensiva, Buenos Aires, Argentina
| | | | - Daniela Laudisio
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Silvia Savastano
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Annamaria Colao
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Cattedra Unesco "Educazione alla salute e allo sviluppo sostenibile", University Federico II, Naples, Italy
| | - Giovanna Muscogiuri
- Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Endocrinology Unit, Department of Clinical Medicine and Surgery, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Cattedra Unesco "Educazione alla salute e allo sviluppo sostenibile", University Federico II, Naples, Italy
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Li L, Tan J, Dai W, Wang B, Bai Y, Ren Y, Liu Q, Zhang Y. The association between maternal tea consumption and the risk of pregnancy induced hypertension: a retrospective cohort study in Lanzhou, China. Pregnancy Hypertens 2022; 30:44-50. [DOI: 10.1016/j.preghy.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 07/21/2022] [Accepted: 08/02/2022] [Indexed: 10/15/2022]
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Magenis ML, Damiani AP, Franca IB, de Marcos PS, Effting PS, Muller AP, de Bem Silveira G, Borges Correa MEA, Medeiros EB, Silveira PCL, Budni J, Boeck CR, de Andrade VM. Behavioral, genetic and biochemical changes in the brain of the offspring of female mice treated with caffeine during pregnancy and lactation. Reprod Toxicol 2022; 112:119-135. [PMID: 35868513 DOI: 10.1016/j.reprotox.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 07/07/2022] [Accepted: 07/16/2022] [Indexed: 11/17/2022]
Abstract
The intrauterine environment is a critical location for exposure to exogenous and endogenous factors that trigger metabolic changes through fetal programming. Among the external factors, chemical compounds stand out, which include caffeine, since its consumption is common among women, including during pregnancy. Thereby, the aim of the present study was to evaluate the behavioral, genetic, and biochemical parameters in the offspring of female mice treated with caffeine during pregnancy and lactation. Swiss female mice (60 days old) received tap water or caffeine at 0.3 or 1.0 mg/mL during copulation (7 days), pregnancy (21 days) and lactation (21 days). After the end of the lactation period, the offspring were divided into groups (water, caffeine 0.3 or 1.0 mg/mL) with 20 animals (10 animals aged 30 days and 10 animals aged 60 days per group per sex). Initially, the offspring were submitted to behavioral tasks and then euthanized for genetic and biochemical analysis in the brain (cortex, striatum, and hippocampus). Behavioral changes in memory, depression, and anxiety were observed in the offspring: 30-day-old female offspring at 1.0 mg /mL dose presented anxiogenic behavior and male offspring the 0.3 mg/mL dose at 30 days of age did not alter long-term memory. Furthermore, an increase in DNA damage and oxidative stress in the brain were observed in the offspring of both sexes. Furthermore, there were changes in Ape-1, BAX, and Bcl-2 in the female offspring hippocampus at 30 days of life. Thus, with this study, we can suggest genotoxicity, oxidative stress, and behavioral changes caused by caffeine during pregnancy and lactation in the offspring that were not treated directly, but received through their mothers; thus, it is important to raise awareness regarding caffeine consumption among pregnant and lactating females.
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Affiliation(s)
- Marina Lummertz Magenis
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Adriani Paganini Damiani
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Ive Bahia Franca
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Pamela Souza de Marcos
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Pauline Souza Effting
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Alexandre Pastoris Muller
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Gustavo de Bem Silveira
- Laboratory of Experimental Pathophysiology, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Maria Eduarda Anastácio Borges Correa
- Laboratory of Experimental Pathophysiology, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Eduarda Behenck Medeiros
- Laboratory of Experimental Neurology, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Paulo Cesar Lock Silveira
- Laboratory of Experimental Pathophysiology, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Josiane Budni
- Laboratory of Experimental Neurology, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil
| | - Carina Rodrigues Boeck
- Graduate Program in Nanosciences, Franciscan University Center - UNIFRA, Santa Maria, RS, Brazil
| | - Vanessa Moraes de Andrade
- Laboratory of Translational Biomedicine, Graduate Program of Health Sciences, University of Southern Santa Catarina - UNESC, Criciúma, SC, Brazil.
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James JE. Maternal caffeine consumption and pregnancy outcomes: a narrative review with implications for advice to mothers and mothers-to-be. BMJ Evid Based Med 2021; 26:114-115. [PMID: 32843532 PMCID: PMC8165152 DOI: 10.1136/bmjebm-2020-111432] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/29/2020] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Caffeine is a habit-forming substance consumed daily by the majority of pregnant women. Accordingly, it is important that women receive sound evidence-based advice about potential caffeine-related harm. This narrative review examines evidence of association between maternal caffeine consumption and negative pregnancy outcomes, and assesses whether current health advice concerning maternal caffeine consumption is soundly based. METHODS Database searches using terms linking caffeine and caffeinated beverages to pregnancy outcomes identified 1261 English language peer-reviewed articles. Screening yielded a total of 48 original observational studies and meta-analyses of maternal caffeine consumption published in the past two decades. The articles reported results for one or more of six major categories of negative pregnancy outcomes: miscarriage, stillbirth, low birth weight and/or small for gestational age, preterm birth, childhood acute leukaemia, and childhood overweight and obesity. RESULTS Of 42 separate sets of findings reported in 37 observational studies, 32 indicated significantly increased caffeine-related risk and 10 suggested no or inconclusive associations. Caffeine-related increased risk was reported with moderate to high levels of consistency for all pregnancy outcomes except preterm birth. Of 11 studies reporting 17 meta-analyses, there was unanimity among 14 analyses in finding maternal caffeine consumption to be associated with increased risk for the four outcome categories of miscarriage, stillbirth, low birth weight and/or small for gestational age, and childhood acute leukaemia. The three remaining meta-analyses were also unanimous in reporting absence of a reliable association between maternal caffeine consumption and preterm birth. No meta-analyses were identified for childhood overweight and obesity, although four of five original observational studies reported significant associations linking maternal caffeine consumption to that outcome category. CONCLUSIONS The substantial majority finding from observational studies and meta-analyses is that maternal caffeine consumption is reliably associated with major negative pregnancy outcomes. Reported findings were robust to threats from potential confounding and misclassification. Among both observational studies and meta-analyses, there were frequent reports of significant dose-response associations suggestive of causation, and frequent reports of no threshold of consumption below which associations were absent. Consequently, current evidence does not support health advice that assumes 'moderate' caffeine consumption during pregnancy is safe. On the contrary, the cumulative scientific evidence supports pregnant women and women contemplating pregnancy being advised to avoid caffeine.
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Affiliation(s)
- Jack E James
- Psychology, Reykjavik University, 101 Reykjavik, Iceland
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He H, Luo H, Liu L, Shangguan Y, Xie X, Wen Y, Wang H, Chen L. Prenatal caffeine exposure caused H-type blood vessel-related long bone dysplasia via miR375/CTGF signaling. FASEB J 2021; 35:e21370. [PMID: 33734471 DOI: 10.1096/fj.202002230r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/19/2020] [Accepted: 12/29/2020] [Indexed: 01/17/2023]
Abstract
Caffeine has developmental toxicity. Prenatal caffeine exposure (PCE) caused intrauterine growth retardation (IUGR) and multiple organ dysplasia. This study intended to explore the effect and mechanism of PCE on long bone development in female fetal rats. In vivo, the PCE group pregnant rats were given different concentrations of caffeine during the gestational Day 9-20. The mRNA expression of osteogenesis-related genes were significantly reduced in PCE group. In the PCE group (120 mg/kg·d), the length and primary center of fetal femur were shorter, and accompanied by H-type blood vessel abundance reducing. Meanwhile, connective tissue growth factor (CTGF) expression decreased in the growth plate of the PCE group (120 mg/kg·d). In contrast, the miR375 expression increased. In vitro, caffeine decreased CTGF and increased miR375 expression in fetal growth plate chondrocytes. After co-culture with caffeine-treated chondrocytes, the tube formation ability for the H-type endothelial cells was decreased. Furthermore, CTGF overexpression or miR375 inhibitor reversed caffeine-induced reduction of tube formation ability, and miR375 inhibitor reversed caffeine-induced CTGF expression inhibition. In summary, PCE decreased the expression of CTGF by miR375, ultimately resulting in H-type blood vessel-related long bone dysplasia.
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Affiliation(s)
- Hangyuan He
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hanwen Luo
- Department of Orthopedics Surgery, Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, China
| | - Liang Liu
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yangfan Shangguan
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Xingkui Xie
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Yinxian Wen
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Orthopedics Surgery, Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, China
| | - Hui Wang
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China.,Department of Pharmacology, Basic Medical School of Wuhan University, Wuhan, China
| | - Liaobin Chen
- Department of Joint Surgery and Sports Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
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Saeed M, Naveed M, BiBi J, Ali Kamboh A, Phil L, Chao S. Potential nutraceutical and food additive properties and risks of coffee: a comprehensive overview. Crit Rev Food Sci Nutr 2019; 59:3293-3319. [PMID: 30614268 DOI: 10.1080/10408398.2018.1489368] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Coffee is a composite mixture of more than a thousand diverse phytochemicals like alkaloids, phenolic compounds, vitamins, carbohydrates, lipids, minerals and nitrogenous compounds. Coffee has multifunctional properties as a food additive and nutraceutical. As a nutraceutical, coffee has anti-inflammatory, anti-oxidant, antidyslipidemic, anti-obesity, type-2 diabetes mellitus (DM), and cardiovascular diseases (CVD), which can serve for the treatment and prevention of metabolic syndrome and associated disorders. On the other hand, as a food additive, coffee has antimicrobial activity against a wide range of microorganisms, inhibits lipid peroxidation (LPO), and can function as a prebiotic. The outcomes of different studies also revealed that coffee intake may reduce the incidence of numerous chronic diseases, like liver disease, mental health, and it also overcomes the all-cause mortality, and suicidal risks. In some studies, high intake of coffee is linked to increase CVD risk factors, like cholesterol, plasma homocysteine and blood pressure (BP). There is also a little evidence that associated the coffee consumption with increased risk of lung tumors in smokers. Among adults who consume the moderate amount of coffee, there is slight indication of health hazards with strong indicators of health benefits. Moreover, existing literature suggests that it may be cautious for pregnant women to eliminate the chances of miscarriages and impaired fetal growth. The primary purpose of this narrative review is to provide an overview of the findings of the positive impacts and risks of coffee consumption on human health. In conclusion, to date, the best available evidence from research indicates that drinking coffee up to 3-4 cups/day provides health benefits for most people.
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Affiliation(s)
- Muhammad Saeed
- Department of Animal Nutrition, College of Animal Sciences and Technology, Northwest A & F University, Yangling, Shaanxi Province, P.R. China
| | - Muhammad Naveed
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China
| | - Jannat BiBi
- Department of Physical Education, Shaanxi Normal University, Xian, Shaanxi Province, P.R. China
| | - Asghar Ali Kamboh
- Department of Veterinary Microbiology, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh Province, Pakistan
| | - Lucas Phil
- Department of Pharmaceutical Analysis, China Pharmaceutical University, School of Pharmacy, Nanjing, Jiangsu Province, P.R. China
| | - Sun Chao
- Department of Animal Nutrition, College of Animal Sciences and Technology, Northwest A & F University, Yangling, Shaanxi Province, P.R. China
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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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8
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Dai R, Pan Y, Fu Y, Liu Q, Han W, Liu R. Role of male genetic factors in recurrent pregnancy loss in Northeast China. Eur J Obstet Gynecol Reprod Biol 2018. [PMID: 29525520 DOI: 10.1016/j.ejogrb.2018.02.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE This study aimed to investigate the roles of male genetic factors, including Y chromosome microdeletions and chromosomal heteromorphism, in recurrent pregnancy loss (RPL) in Northeast China. STUDY DESIGN We evaluated 1072 male patients from Northeast China whose wives had a history of two or more consecutive miscarriages. We also selected 971 infertile and 200 fertile men as control groups. Semen analysis was carried out by computer-assisted sperm analysis. Y chromosome microdeletions were detected by polymerase chain reaction and chromosomes were evaluated by karyotype analysis. RESULTS There were no microdeletions in the RPL and fertile control groups, but 112 of the infertile men had Y chromosome microdeletions. Chromosomal heteromorphism was detected in all the groups. Patients in the infertile control group had a significantly higher percentage (2.16%) of Y variation (Yqh±) heteromorphism compared with the RPL group, but there were no significant differences in the incidences of chromosomal heteromorphism among the other groups. CONCLUSION Y chromosome microdeletions and chromosomal heteromorphism are not associated with RPL in Northeast China. Some RPL males had structural chromosome anomalies, all of which were reciprocal translocations. We suggest that it may not be necessary to detect Y chromosome microdeletions in RPL males with Yqh±.
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Affiliation(s)
- Rulin Dai
- Department of Reproductive Medicine, Department of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, Jilin, 130021, China
| | - Yuan Pan
- Department of Reproductive Medicine, Department of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, Jilin, 130021, China
| | - Yan Fu
- Department of Gynaecology and Obstetrics, First Hospital, Jilin University, Changchun, Jilin, 130021, China
| | - Qian Liu
- Department of Reproductive Medicine, Department of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, Jilin, 130021, China
| | - Weifeng Han
- Department of Reproductive Medicine, Department of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, Jilin, 130021, China
| | - Ruizhi Liu
- Department of Reproductive Medicine, Department of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, Jilin, 130021, China.
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Campen KA, McNatty KP, Pitman JL. A protective role of cumulus cells after short-term exposure of rat cumulus cell-oocyte complexes to lifestyle or environmental contaminants. Reprod Toxicol 2017; 69:19-33. [PMID: 28087314 DOI: 10.1016/j.reprotox.2017.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/05/2017] [Indexed: 01/07/2023]
Abstract
Ovarian follicular fluid provides a potential reservoir for exogenous compounds that may adversely affect oocyte quality. This study examined the effects of common lifestyle and environmental contaminants, namely bisphenol-A (BPA), caffeine, 3,4-methylenedioxymethamphetamine (MDMA), nicotine and Δ9-tetrahydrocannabinol (THC) on gap junction genes (Gja1, Gja4) and proteins (GJA1), glucose metabolism genes (Gfpt1, Pfkp) and oocyte growth factor genes (Bmp15, Gdf9), as well as gap junction transfer rate, in rat cumulus-oocyte complexes (COCs). In vitro exposure to MDMA and THC accelerated the timing of meiotic resumption and all contaminants altered either gap junction gene expression (BPA, caffeine, MDMA and THC) or transfer rate (BPA and nicotine). In vitro exposure of COCs to MDMA also altered glucose metabolism genes. Overall, oocyte-derived genes were largely unaffected following exposure to any contaminant. In summary, the impact of short-term exposure to lifestyle and environmental contaminants on oocyte function may be diminished due to protective properties of cumulus cells.
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Affiliation(s)
- Kelly A Campen
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Kenneth P McNatty
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Janet L Pitman
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand.
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Thelle DS, Strandhagen E. Coffee and disease: an overview with main emphasis on blood lipids and homocysteine. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/11026480510037138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Dag S. Thelle
- Cardiovascular Institute, Department of Medicine, Sahlgrenska University Hospital/ö stra, Göteborg, Sweden
| | - Elisabeth Strandhagen
- Institute of Clinical Epidemiology and Molecular Biology, Akershus Unversity Hospital, Oslo, Norway
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11
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Coffee and cancer risk: A meta-analysis of prospective observational studies. Sci Rep 2016; 6:33711. [PMID: 27665923 PMCID: PMC5036059 DOI: 10.1038/srep33711] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 09/01/2016] [Indexed: 12/18/2022] Open
Abstract
Meta-analyses on coffee and cancer incidence mainly restricted to limited cancers. We carried out a more comprehensive meta-analysis of cohort studies to explore association between coffee and most cancer types. We conducted comprehensive search and summarized relative risk (RR) and 95% confidence intervals for the highest versus lowest coffee intake and cancer using STATA12. We conducted dose-analysis if result suggested significant association. The publication bias was evaluated with begg's and egger's test. Finally, 105 individual prospective studies were included. Inverse associations were observed on oral, pharyngeal, colon, liver, prostate, endometrial cancer and melanoma, with RR 0.69 (95% CI = 0.48-0.99, I2 = 73.4%, P = 0.044), 0.87 (95% CI = 0.78-0.96, I2 = 28.4%, P = 0.007), 0.46 (95% CI = 0.37-0.57, I2 = 0%, P = 0), 0.89 (95% CI = 0.84-0.93, I2 = 30.3%, P = 0.003), 0.73 (95% CI = 0.67-0.80, I2 = 0%, P = 0) and 0.89 (95% CI = 0.80-0.99, I2 = 0%, P = 0.031) respectively. However, the relative risk for lung cancer is 2.18 (95% CI = 1.26-3.75, I2 = 63.3%, P = 0.005). The summary relative risk for increment of 2 cups of coffee were RR = 0.73, 95% CI = 0.67-0.79 for liver cancer, RR = 0.97, 95% CI = 0.96-0.98 for prostate cancer and RR = 0.88, 95% CI = 0.85-0.92 for endometrial cancer. Accordingly, coffee intake was associated with reduced risk of oral, pharynx, liver, colon, prostate, endometrial cancer and melanoma and increased lung cancer risk.
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12
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Doepker C, Lieberman HR, Smith AP, Peck JD, El-Sohemy A, Welsh BT. Caffeine: Friend or Foe? Annu Rev Food Sci Technol 2016; 7:117-37. [PMID: 26735800 DOI: 10.1146/annurev-food-041715-033243] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The debate on the safety of and regulatory approaches for caffeine continues among various stakeholders and regulatory authorities. This decision-making process comes with significant challenges, particularly when considering the complexities of the available scientific data, making the formulation of clear science-based regulatory guidance more difficult. To allow for discussions of a number of key issues, the North American Branch of the International Life Sciences Institute (ILSI) convened a panel of subject matter experts for a caffeine-focused session entitled "Caffeine: Friend or Foe?," which was held during the 2015 ILSI Annual Meeting. The panelists' expertise covered topics ranging from the natural occurrence of caffeine in plants and interindividual metabolism of caffeine in humans to specific behavioral, reproductive, and cardiovascular effects related to caffeine consumption. Each presentation highlighted the potential risks, benefits, and challenges that inform whether caffeine exposure warrants concern. This paper aims to summarize the key topics discussed during the session.
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Affiliation(s)
| | - Harris R Lieberman
- US Army Research Institute of Environmental Medicine, Natick, Massachusetts 01760;
| | - Andrew Paul Smith
- Centre for Occupational and Health Psychology, School of Psychology, Cardiff University, Cardiff CF10 3AS, United Kingdom;
| | - Jennifer D Peck
- Department of Biostatistics & Epidemiology, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104;
| | - Ahmed El-Sohemy
- Department of Nutritional Sciences, University of Toronto, Toronto, Ontario M5S 3E2, Canada;
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Deng W, Yang H, Wang J, Cai J, Bai Z, Song J, Zhang Z. Coffee consumption and the risk of incident gastric cancer--A meta-analysis of prospective cohort studies. Nutr Cancer 2015; 68:40-7. [PMID: 26710312 DOI: 10.1080/01635581.2016.1115093] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
As several epidemiological studies on the association of coffee consumption with gastric cancer risk have produced inconsistent results, this meta-analysis was designed to synthesize current evidence of this potential relationship. We searched PubMed, EMBASE, and the Cochrane Library up to September 2014 to retrieve relevant articles. Prospective cohort studies were included if the relative risks (RRs) or hazard ratios and 95% confidence intervals (CIs) for gastric cancer according to coffee consumption were reported. Fixed- or random-effects models were used based on heterogeneity. The search yielded 13 eligible cohort studies of 3484 incident gastric cancer patients from among 1,324,559 participants. A significantly increased risk was found between gastric cardia cancer and coffee consumption (RR = 1.50, 95% CI: 1.09-2.07). Compared with Europeans (RR = 1.12, 95% CI: 0.86-1.46) and Asians (RR = 0.96, 95% CI: 0.72-1.27), Americans (RR = 1.36, 95% CI: 1.06-1.74) demonstrated a significantly positive association. However, the significant differences of the pooled results vanished after adjusting for smoking or body mass index. Our meta-analysis results suggest that a high level of coffee consumption is a risk factor for gastric cancer. However, these results should not be overinterpreted because residual confounding effects of other factors could exist.
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Affiliation(s)
- Wei Deng
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
| | - Hua Yang
- b Department of General Surgery , Beijing Hospital , Dongdan , Beijing , China
| | - Jin Wang
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
| | - Jun Cai
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
| | - Zhigang Bai
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
| | - Jianning Song
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
| | - Zhongtao Zhang
- a Department of General Surgery , Beijing Friendship Hospital, Capital Medical University , Beijing , China
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Klebanoff MA, Keim SA. Maternal Caffeine Intake During Pregnancy and Child Cognition and Behavior at 4 and 7 Years of Age. Am J Epidemiol 2015; 182:1023-32. [PMID: 26585526 DOI: 10.1093/aje/kwv136] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/15/2015] [Indexed: 12/17/2022] Open
Abstract
Although caffeine is commonly consumed during pregnancy, there are few reports on the association of in utero caffeine exposure with offspring cognition or behavior during childhood. We evaluated the association of maternal serum paraxanthine, caffeine's primary metabolite, at <20 and ≥26 weeks' gestation with the child's intelligence quotient (IQ) and problem behaviors at ages 4 and 7 years among 2,197 mother-child pairs. The mothers were controls from a case-control study of caffeine metabolites and spontaneous abortion that was nested within the Collaborative Perinatal Project (multiple US sites, 1959-1974). Associations of paraxanthine (adjusted for maternal age, race, education, smoking, prepregnancy weight, gestational age at blood draw, and child sex) with mean IQ were assessed by linear regression and associations with problem behaviors by logistic regression. Paraxanthine concentration at ≥26 weeks' gestation manifested an inverted-J-shaped association with child's IQ at age 7 years, with a peak difference (vs. undetectable) of 0.65 points at 750 µg/L (66th percentile) and a decrement thereafter. Paraxanthine at <20 weeks was linearly associated with internalizing behavior at age 4 years (for a 500-µg/L increase, odds ratio = 1.3, 95% confidence interval: 1.1, 1.5). None of the remaining 12 associations approached statistical significance. We conclude that over a range of values applicable to most pregnant women, there was no meaningful association of serum paraxanthine level with childhood IQ or problem behaviors.
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Maternal Serum Paraxanthine During Pregnancy and Offspring Body Mass Index at Ages 4 and 7 Years. Epidemiology 2015; 26:185-91. [DOI: 10.1097/ede.0000000000000220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liu H, Hu GH, Wang XC, Huang TB, Xu L, Lai P, Guo ZF, Xu YF. Coffee consumption and prostate cancer risk: a meta-analysis of cohort studies. Nutr Cancer 2015; 67:392-400. [PMID: 25706900 DOI: 10.1080/01635581.2015.1004727] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This meta-analysis was conducted to assess the association between coffee consumption and prostate cancer risk. Thirteen cohort studies with 34,105 cases and 539,577 participants were included in the meta-analysis. The summary relative risks (RRs) with 95% confidence intervals (CIs) for different coffee intake levels were calculated. Dose-response relationship was assessed using generalized least square trend estimation. The pooled RR for the highest vs. lowest coffee intake was 0.90 (95% CI: 0.85-0.95), with no significant heterogeneity across studies (P = 0.267; I(2) = 17.5%). The dose-response analysis showed a lower cancer risk decreased by 2.5% (RR = 0.975; 95% CI: 0.957-0.995) for every 2 cups/day increment in coffee consumption. Stratifying by geographic region, there was a statistically significant protective influence of coffee on prostate cancer risk among European populations. In subgroup analysis of prostate cancer grade, the summary RRs were 0.89 (95% CI: 0.83-0.96) for nonadvanced, 0.82 (95% CI: 0.61-1.10) for advanced and 0.76 (95% CI: 0.55-1.06) for fatal diseases. Our findings suggest that coffee consumption may be associated with a reduced risk of prostate cancer and it also has an inverse association with nonadvanced prostate cancer. Because of the limited number of studies, more prospective studies with large sample size are needed to confirm this association.
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Affiliation(s)
- Huan Liu
- a Department of Urology , Shanghai Tenth People's Hospital, Tongji University , Shanghai , China
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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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Santiago SE, Park GH, Huffman KJ. Consumption habits of pregnant women and implications for developmental biology: a survey of predominantly Hispanic women in California. Nutr J 2013; 12:91. [PMID: 23815874 PMCID: PMC3704911 DOI: 10.1186/1475-2891-12-91] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 06/12/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Healthy post-pregnancy outcomes are contingent upon an informed regimen of prenatal care encouraging healthy maternal consumption habits. In this article, we describe aspects of maternal intake of food, drink, and medication in a population of predominantly Hispanic women in Southern California. Potential implications for unhealthy prenatal dietary choices are discussed. METHODS The Food, Beverage, and Medication Intake Questionnaire (FBMIQ) measures common practices of maternal consumption during pregnancy. The FBMIQ was administered to English and Spanish speaking pregnant and recently pregnant (36 weeks pregnant - 8 weeks post-partum) women over the age of 18 who were receiving care from a private medical group in Downey CA. RESULTS A total of 200 women completed the FBMIQ. Consumption habits of healthy foods and beverages, unhealthy foods, unhealthy beverages, and medication are characterized in this article. Data indicate widespread consumption of fresh fruit, meats, milk and juice and indicate most women used prenatal vitamin supplements. Studies in developmental neuroscience have shown that certain substances may cause teratogenic effects on the fetus when ingested by the mother during pregnancy. Those potentially harmful substances included in our study were Bisphenol-A (BPA), methylmercury, caffeine, alcohol and certain medications. Our results show that a proportion of the women surveyed in our study consumed BPA, methylmercury, caffeine, alcohol, and certain medications at varied levels during pregnancy. This represents an interesting finding and suggests a disconnect between scientific data and general recommendations provided to pregnant mothers by obstetricians. CONCLUSIONS The results of our study demonstrate that a proportion of pregnant women consume substances that are potentially teratogenic and may impact the health and well being of the offspring. It is important to appraise healthy and unhealthy consumption habits in order to encourage healthy practices and alleviate future effects of preventable, toxin-induced developmental issues. Prenatal advising should discourage the consumption of dangerous foods, beverages, and medications that women commonly report eating during pregnancy.
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Affiliation(s)
- Sarah E Santiago
- Department of Psychology, University of California, 900 University Avenue, Riverside, CA, 92521-0128, California
| | - Grace H Park
- Department of Psychology, University of California, 900 University Avenue, Riverside, CA, 92521-0128, California
| | - Kelly J Huffman
- Department of Psychology, University of California, 900 University Avenue, Riverside, CA, 92521-0128, California
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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
Coffee consumption has been associated with a lower risk of type 2 diabetes. This association does not depend on race, gender, geographic distribution of the study populations, or the type of coffee consumed (i.e., caffeinated or decaffeinated). This review discusses the strength of this relationship, examines the possibility that the pattern of coffee consumption could influence the association, and evaluates the possible relationship between coffee consumption and other risk factors associated with diabetes. Particular attention is paid to the identification, on the basis of the scientific evidence, of the possible mechanisms by which coffee components might affect diabetes development, especially in light of the paradoxical effect of caffeine on glucose metabolism. In addition to the role of coffee in reducing the risk of developing type 2 diabetes, the possible role of coffee in the course of the illness is explored. Finally, the possibility that coffee can also affect the risk of other forms of diabetes (e.g., type 1 diabetes and gestational diabetes) is examined.
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Affiliation(s)
- Fausta Natella
- The National Research Institute on Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy.
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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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Spezielle Arzneimitteltherapie in der Schwangerschaft. ARZNEIMITTEL IN SCHWANGERSCHAFT UND STILLZEIT 2012. [PMCID: PMC7271212 DOI: 10.1016/b978-3-437-21203-1.10002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Brent RL, Christian MS, Diener RM. Evaluation of the reproductive and developmental risks of caffeine. BIRTH DEFECTS RESEARCH. PART B, DEVELOPMENTAL AND REPRODUCTIVE TOXICOLOGY 2011; 92:152-87. [PMID: 21370398 PMCID: PMC3121964 DOI: 10.1002/bdrb.20288] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 01/18/2011] [Accepted: 01/23/2011] [Indexed: 11/12/2022]
Abstract
A risk analysis of in utero caffeine exposure is presented utilizing epidemiological studies and animal studies dealing with congenital malformation, pregnancy loss, and weight reduction. These effects are of interest to teratologists, because animal studies are useful in their evaluation. Many of the epidemiology studies did not evaluate the impact of the "pregnancy signal," which identifies healthy pregnancies and permits investigators to identify subjects with low pregnancy risks. The spontaneous abortion epidemiology studies were inconsistent and the majority did not consider the confounding introduced by not considering the pregnancy signal. The animal studies do not support the concept that caffeine is an abortafacient for the wide range of human caffeine exposures. Almost all the congenital malformation epidemiology studies were negative. Animal pharmacokinetic studies indicate that the teratogenic plasma level of caffeine has to reach or exceed 60 µg/ml, which is not attainable from ingesting large amounts of caffeine in foods and beverages. No epidemiological study described the "caffeine teratogenic syndrome." Six of the 17 recent epidemiology studies dealing with the risk of caffeine and fetal weight reduction were negative. Seven of the positive studies had growth reductions that were clinically insignificant and none of the studies cited the animal literature. Analysis of caffeine's reproductive toxicity considers reproducibility and plausibility of clinical, epidemiological, and animal data. Moderate or even high amounts of beverages and foods containing caffeine do not increase the risks of congenital malformations, miscarriage or growth retardation. Pharmacokinetic studies markedly improve the ability to perform the risk analyses.
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Affiliation(s)
- Robert L Brent
- Thomas Jefferson University, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19899, USA.
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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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Peck JD, Leviton A, Cowan LD. A review of the epidemiologic evidence concerning the reproductive health effects of caffeine consumption: a 2000-2009 update. Food Chem Toxicol 2010; 48:2549-76. [PMID: 20558227 DOI: 10.1016/j.fct.2010.06.019] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Revised: 06/08/2010] [Accepted: 06/10/2010] [Indexed: 01/27/2023]
Abstract
This review of human studies of caffeine and reproductive health published between January 2000 and December 2009 serves to update the comprehensive review published by Leviton and Cowan (2002). The adverse reproductive outcomes addressed in this review include: (1) measures of subfecundity; (2) spontaneous abortion; (3) fetal death; (4) preterm birth; (5) congenital malformations; and (6) fetal growth restriction. Methodologic challenges and considerations relevant to investigations of each reproductive endpoint are summarized, followed by a brief critical review of each study. The evidence for an effect of caffeine on reproductive health and fetal development is limited by the inability to rule out plausible alternative explanations for the observed associations, namely confounding by pregnancy symptoms and smoking, and by exposure measurement error. Because of these limitations, the weight of evidence does not support a positive relationship between caffeine consumption and adverse reproductive or perinatal outcomes.
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Affiliation(s)
- Jennifer David Peck
- University of Oklahoma Health Sciences Center, College of Public Health, USA.
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Tang N, Wu Y, Ma J, Wang B, Yu R. Coffee consumption and risk of lung cancer: a meta-analysis. Lung Cancer 2010; 67:17-22. [PMID: 19362749 DOI: 10.1016/j.lungcan.2009.03.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Revised: 03/08/2009] [Accepted: 03/11/2009] [Indexed: 11/18/2022]
Abstract
Epidemiologic studies have evaluated the potential association between coffee consumption and lung cancer risk. However, results were inconsistent. To clarify the role of coffee in lung cancer, we conducted a meta-analysis on this topic. We searched PubMed and EMBASE databases (from 1966 to January 2009) and the reference lists of retrieved articles. Study-specific risk estimates were pooled using random-effects model. Five prospective studies and 8 case-control studies involving 5347 lung cancer cases and 104,911 non-cases were included in this meta-analysis. The combined results indicated a significant positive association between highest coffee intake and lung cancer [relative risk (RR)=1.27, 95% confidence interval (CI)=1.04-1.54). Furthermore, an increase in coffee consumption of 2 cups/day was associated with a 14% increased risk of developing lung cancer (RR=1.14, 95% CI=1.04-1.26). In stratified analyses, the highest coffee consumption was significantly associated with increased risk of lung cancer in prospective studies, studies conducted in America and Japan, but borderline significantly associated with decreased risk of lung cancer in non-smokers. In addition, decaffeinated coffee drinking was associated with decreased lung cancer risk, although the number of studies on this topic was relative small. In conclusion, results from this meta-analysis indicate that high or an increased consumption of coffee may increase the risk of lung cancer. Because the residual confounding effects of smoking or other factors may still exist, these results should be interpreted with caution.
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Affiliation(s)
- Naping Tang
- National Shanghai Center for New Drug Safety Evaluation and Research, Shanghai Institute of Pharmaceutical Industry, 199 Guoshoujing Road, Zhangjiang Hi-Tech Park, Pudong, Shanghai 201203, China.
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Chavarro JE, Rich-Edwards JW, Rosner BA, Willett WC. Caffeinated and alcoholic beverage intake in relation to ovulatory disorder infertility. Epidemiology 2009; 20:374-81. [PMID: 19279491 PMCID: PMC3071680 DOI: 10.1097/ede.0b013e31819d68cc] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Many studies have examined whether caffeine, alcohol, or specific beverages containing these substances affect fertility in women. However, most of these studies have retrospectively collected information on alcohol and caffeine intake, making the results susceptible to biases. METHODS We followed 18,555 married women without a history of infertility for 8 years as they attempted to become (or became) pregnant. Diet was measured twice during this period and prospectively related to the incidence of ovulatory disorder infertility. RESULTS There were 438 incident report of ovulatory disorder infertility during follow-up. Intakes of alcohol and caffeine were unrelated to the risk of ovulatory disorder infertility. Comparing the highest to lowest categories of intake, the multivariate-adjusted relative risk, was 1.11 (95% confidence interval = 0.76-1.64; P for trend 0.78) for alcohol and 0.86 (0.61-1.20; 0.44) for total caffeine. However, intake of caffeinated soft drinks was positively related to ovulatory disorder infertility. Comparing the highest to lowest categories of caffeinated soft drink consumption, the RR was 1.47 (1.09-1.98; 0.01). Similar associations were observed for noncaffeinated, sugared, diet, and total soft drinks. CONCLUSIONS Our findings do not support the hypothesis that alcohol and caffeine impair ovulation to the point of decreasing fertility. The association between soft drinks and ovulatory disorder infertility seems not to be attributable to their caffeine or sugar content, and deserves further investigation.
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Affiliation(s)
- Jorge E Chavarro
- Department of Nutrition, Harvard School of Public Health, Boston, MA, USA.
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Wei SQ, Xu H, Xiong X, Luo ZC, Audibert F, Fraser WD. Tea consumption during pregnancy and the risk of pre-eclampsia. Int J Gynaecol Obstet 2009; 105:123-6. [PMID: 19195655 DOI: 10.1016/j.ijgo.2008.12.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2008] [Revised: 11/27/2008] [Accepted: 12/04/2008] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To examine the effects of tea consumption during pregnancy on the risk of pre-eclampsia. METHODS A case-control study was carried out among nulliparous pregnant women in Quebec between January 2003 and March 2006. Data were collected using a structured study questionnaire. A total of 92 women with pre-eclampsia and 245 controls were analyzed. Univariate analysis and multivariate regression were performed to examine the association between tea consumption and pre-eclampsia. RESULTS Compared with non-tea drinking during pregnancy, the crude odds ratio (OR) and adjusted OR (aOR) of pre-eclampsia for tea drinking were 1.34 (95% CI, 0.80-2.25) and 1.39 (95% CI, 0.81-2.41), respectively. The OR and aOR of severe pre-eclampsia for tea drinking were 1.39 (95% CI, 0.78-2.46) and 2.14 (95% CI, 1.01-4.54), respectively. The aORs for persistent tea consumption in pre-eclampsia and severe pre-eclampsia were 1.88 (95% CI, 1.01-3.51) and 1.95 (95% CI, 1.06-3.57), respectively. CONCLUSION Persistent tea drinking during pregnancy may be associated with an increased risk of pre-eclampsia.
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Affiliation(s)
- Shu-Qin Wei
- Department of Obstetrics and Gynecology, University of Montreal, Quebec, Canada
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Weselak M, Arbuckle TE, Walker MC, Krewski D. The influence of the environment and other exogenous agents on spontaneous abortion risk. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2008; 11:221-241. [PMID: 18368554 DOI: 10.1080/10937400701873530] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
It is estimated that close to 30% of all pregnancies end in spontaneous abortion. Although about 60% of spontaneous abortions are thought to be due to genetic, infectious, hormonal, and immunological factors, the role of the environment remains poorly understood. Pregnancy involves a delicate balance of hormonal and immunological functions, which may be affected by environmental substances. Many toxic substances that are persistent in the environment and accumulate in the fatty tissues may disrupt this equilibrium. This overview addresses known risk factors for spontaneous abortions and examines the role, if any, that environmental factors (chemical and physical) may play in the etiology of this adverse health outcome.
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Affiliation(s)
- Mandy Weselak
- McLaughlin Centre for Population Health Risk Assessment, Institute of Population Health, University of Ottawa, Ottawa, Ontario, Canada.
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Abstract
The present paper explores the level of evidence required to justify giving dietary advice to the public. There are important practical differences between the development of public health nutrition guidelines and guidelines for clinical practice. While the gold standard for evidence for clinical practice guidelines is a meta-analysis of a number of randomised controlled trials, this is often unrealistic and sometimes unethical for the evaluation of public health nutrition interventions. Hence, epidemiological studies make up the bulk of evidence for nutrition guidelines. Tea and coffee are an interesting case study in relation to this issue. They are two of the most commonly consumed beverages worldwide, yet there is little dietary advice on their use. The evidence for a relationship between coffee or tea consumption and several diseases is discussed. The available studies, predominantly epidemiological, together with animal and in vitro studies, indicate that coffee and tea are both safe beverages. However, tea is the healthier option because it has a possible role in the prevention of several cancers and CVD. While the evidence for such relationships is not strong, the public will continue to drink both tea and coffee, and will continue to ask nutritionists to make recommendations. It is therefore argued that advice should be given on the best available data, as waiting for complete data to become available could have severe consequences for public health.
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Mose T, Kjaerstad MB, Mathiesen L, Nielsen JB, Edelfors S, Knudsen LE. Placental passage of benzoic acid, caffeine, and glyphosate in an ex vivo human perfusion system. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2008; 71:984-91. [PMID: 18569607 DOI: 10.1080/01932690801934513] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ex vivo perfusion of the human term placenta is a method to study placental transfer without extrapolation from animal to human and with no ethical concerns for mother and child. However, ex vivo placenta perfusion has a limited potential within chemical screening and testing as the method is time-consuming. This study was an attempt to construct data needed to develop quantitative structure-activity relationship (QSAR) models that are able to predict placental transfer of new compounds. Placental transfer is a biological activity that statistically may be related to the physiochemical properties of a given group of compounds. Benzoic acid, caffeine, and glyphosate were chosen as model compounds because they are small molecules with large differences in physiochemical properties. Caffeine crossed the placenta by passive diffusion. The initial transfer rate of benzoic acid was more limited in the first part of the perfusion compared to caffeine, but reached the same steady-state level by the end of perfusion. The transfer of glyphosate was restricted throughout perfusion, with a lower permeation rate, and only around 15% glyphosate in maternal circulation crossed to the fetal circulation during the study period.
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Affiliation(s)
- Tina Mose
- Department of Environmental and Occupational Health, Institute of Public Health, Copenhagen, Denmark
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Pacheco AHDRN, Barreiros NSR, Santos IS, Kac G. Consumo de cafeína entre gestantes e a prevalência do baixo peso ao nascer e da prematuridade: uma revisão sistemática. CAD SAUDE PUBLICA 2007; 23:2807-19. [DOI: 10.1590/s0102-311x2007001200002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Realizou-se revisão sistemática sobre o consumo de cafeína em gestantes na ocorrência de baixo peso ao nascer e prematuridade, enfocando métodos para quantificação deste consumo e confundimentos controlados na análise. A revisão consistiu na busca de artigos publicados de 1996 a 2006 nas bases MEDLINE, LILACS e PubMed, utilizando-se as palavras-chave: "caffeine", "coffee", "low birth weight", "birth weight", "preterm", "premature" e "prematurity". Dez artigos foram selecionados. Os métodos utilizados para quantificar o consumo de cafeína foram: questionário de freqüência alimentar semiquantitativo - da dieta ou apenas de produtos cafeinados, sendo um do tipo auto-aplicado; recordatório alimentar; perguntas sobre tipo e modo de preparo; análise de amostras; e dosagens urinária e plasmática. Em três estudos revisados, o consumo elevado de cafeína associou-se com baixo peso ao nascer e/ou prematuridade. Contradições nos achados devem-se a dificuldades na mensuração do consumo de cafeína; às fontes abordadas; a variações no preparo e na quantidade consumida; e ao tamanho amostral. Não foi demonstrada associação entre ingestão moderada de cafeína e crescimento fetal, sendo necessária uma avaliação mais precisa do consumo dessa substância.
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Martín I, López-Vílchez MA, Mur A, García-Algar O, Rossi S, Marchei E, Pichini S. Neonatal withdrawal syndrome after chronic maternal drinking of mate. Ther Drug Monit 2007; 29:127-9. [PMID: 17304161 DOI: 10.1097/ftd.0b013e31803257ed] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The premature newborn of a mother who reported drinking mate during pregnancy presented with increased jitteriness and irritability, high-pitched cry, hypertonia in the limbs, and brisk tendon reflexes consistent with neonatal withdrawal syndrome. High concentrations of caffeine and theobromine were detected in various maternal and neonatal biological matrices (placenta, cord serum, neonatal urine, maternal and neonatal hair, meconium, and breast milk), demonstrating both acute and chronic prenatal and postnatal exposure to these methylxanthines, contained in high amounts in homemade mate. Symptoms progressively disappeared at 84 hours of age, although intermittent irritability was still present when the infant was discharged at 24 days of age. Fluctuating caffeine (and theobromine) content in different breast milk feeds likely generated the baby's irritability, due to either the physiological stimulatory effects of the methylxanthines or postnatal withdrawal syndrome as the substances cleared from the body. The mother was strongly advised to initiate a considerable, progressive, constant reduction of mate consumption to a maximum of 2 cups a day for the duration of breastfeeding.
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Affiliation(s)
- Itziar Martín
- Neonatology Unit, Service of Pediatrics, Hospital Universitari del Mar, Barcelona, Spain
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Infante-Rivard C. Caffeine intake and small-for-gestational-age birth: modifying effects of xenobiotic-metabolising genes and smoking. Paediatr Perinat Epidemiol 2007; 21:300-9. [PMID: 17564586 DOI: 10.1111/j.1365-3016.2007.00825.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The relationship between caffeine consumption and small-for-gestational-age (SGA) birth remains uncertain. However, factors that can influence caffeine metabolism, such as genetic polymorphisms, have not been considered, while other similar factors such as smoking and ethnicity have not always been fully accounted for in the interpretation of results. A case-control study was carried out comprising 493 cases and 472 controls. Cases were newborns whose birthweight was below the 10th percentile according to gestational age and sex, based on national norms, and controls were at or above the 10th percentile. Caffeine consumption from beverages was estimated for each pregnancy trimester. Maternal and newborn variants in the CYP1A2 and CYP2E1 genes involved in the metabolism of caffeine were determined. Contrasting consumption >or=300 mg/day with a lower level, or using caffeiwne as a continuous measure, while adjusting for smoking and nausea, showed no increased risk for SGA. However, when stratifying for cigarette smoking, caffeine odds ratios (for the continuous and dichotomous measures) in the first trimester were statistically heterogeneous, suggesting a greater risk among non-smokers. Using birthweight as the outcome and caffeine as a continuous measure, a small 38 g [95% confidence interval -68, -8] decrement for every 100 mg of daily caffeine was observed in the third trimester. The studied polymorphisms did not modify the effect of caffeine. Caffeine consumption is unlikely to be a major risk factor for SGA or low birthweight in pregnant women.
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Affiliation(s)
- Claire Infante-Rivard
- Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine, McGill University, Montréal, Québec, Canada.
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Browne ML, Bell EM, Druschel CM, Gensburg LJ, Mitchell AA, Lin AE, Romitti PA, Correa A. Maternal caffeine consumption and risk of cardiovascular malformations. ACTA ACUST UNITED AC 2007; 79:533-43. [PMID: 17405163 DOI: 10.1002/bdra.20365] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The physiologic effects and common use of caffeine during pregnancy call for examination of maternal caffeine consumption and risk of birth defects. Epidemiologic studies have yielded mixed results, but such studies have grouped etiologically different defects and have not evaluated effect modification. METHODS The large sample size and precise case classification of the National Birth Defects Prevention Study allowed us to examine caffeine consumption and specific cardiovascular malformation (CVM) case groups. We studied consumption of caffeinated coffee, tea, soda, and chocolate to estimate total caffeine intake and separately examined exposure to each caffeinated beverage. Smoking, alcohol, vasoactive medications, folic acid supplement use, and infant gender were evaluated for effect modification. Maternal interview reports for 4,196 CVM case infants overall and 3,957 control infants were analyzed. RESULTS We did not identify any significant positive associations between maternal caffeine consumption and CVMs. For tetralogy of Fallot, nonsignificant elevations in risk were observed for moderate (but not high) caffeine intake overall and among nonsmokers (ORs of 1.3 to 1.5). Risk estimates for both smoking and consuming caffeine were less than the sum of the excess risks for each exposure. We observed an inverse trend between coffee intake and risk of atrial septal defect; however, this single significant pattern of association might have been a chance finding. CONCLUSIONS Our study found no evidence for an appreciable teratogenic effect of caffeine with regard to CVMs.
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Affiliation(s)
- Marilyn L Browne
- Bureau of Environmental & Occupational Epidemiology, New York State Department of Health, Troy, New York, USA.
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Abstract
A moderate reduction in caffeine intake in the second half of pregnancy has no effect on birth weight or length of gestation
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Bille C, Olsen J, Vach W, Knudsen VK, Olsen SF, Rasmussen K, Murray JC, Andersen AMN, Christensen K. Oral clefts and life style factors — A case-cohort study based on prospective Danish data. Eur J Epidemiol 2007; 22:173-81. [PMID: 17295096 DOI: 10.1007/s10654-006-9099-5] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Accepted: 12/19/2006] [Indexed: 10/23/2022]
Abstract
This study examines the association between oral clefts and first trimester maternal lifestyle factors based on prospective data from the Danish National Birth Cohort. The cohort includes approximately 100,000 pregnancies. In total 192 mothers gave birth to child with an oral cleft during 1997-2003. Information on risk factors such as smoking, alcohol consumption, tea, coffee, cola, and food supplements was obtained during pregnancy for these and 828 randomly selected controls. We found that first trimester maternal smoking was associated with an increased risk of oral clefts (odds ratio (OR): 1.50; 95% confidence interval (CIs): 1.05, 2.14). Although not statistically significant, we also saw associations with first trimester consumption of alcohol (OR: 1.11; CIs: 0.79, 1.55), tea (OR: 1.31; CIs: 0.93, 1.86), and drinking more than 1 l of cola per week (OR: 1.40; CIs: 0.92, 2.12). Furthermore supplementation with > or =400 mcg folic acid daily during the entire first trimester (OR: 0.75; CIs: 0.46, 1.22) suggested an inverse associated with oral clefts, similar to our results on coffee drinking. No effects were found for smaller doses of folic acid, vitamin A, B6 or B12 in this study. The present study found an association between oral clefts and smoking and, although not conclusive, supports an association of oral cleft with alcohol.
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Affiliation(s)
- Camilla Bille
- Center for the Prevention of Congenital Malformations, Institute of Public Health, University of Southern Denmark, J.B. Winsløwsvej 9B, 5000 Odense C, Denmark.
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Abstract
Coffee is a complex mixture of chemicals that provides significant amounts of chlorogenic acid and caffeine. Unfiltered coffee is a significant source of cafestol and kahweol, which are diterpenes that have been implicated in the cholesterol-raising effects of coffee. The results of epidemiological research suggest that coffee consumption may help prevent several chronic diseases, including type 2 diabetes mellitus, Parkinson's disease and liver disease (cirrhosis and hepatocellular carcinoma). Most prospective cohort studies have not found coffee consumption to be associated with significantly increased cardiovascular disease risk. However, coffee consumption is associated with increases in several cardiovascular disease risk factors, including blood pressure and plasma homocysteine. At present, there is little evidence that coffee consumption increases the risk of cancer. For adults consuming moderate amounts of coffee (3-4 cups/d providing 300-400 mg/d of caffeine), there is little evidence of health risks and some evidence of health benefits. However, some groups, including people with hypertension, children, adolescents, and the elderly, may be more vulnerable to the adverse effects of caffeine. In addition, currently available evidence suggests that it may be prudent for pregnant women to limit coffee consumption to 3 cups/d providing no more than 300 mg/d of caffeine to exclude any increased probability of spontaneous abortion or impaired fetal growth.
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Affiliation(s)
- Jane V Higdon
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
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Abstract
BACKGROUND Caffeine is teratogenic in animal studies when administered at high concentrations. Previous review articles have concluded that maternal caffeine consumption does not influence the risk of congenital anomalies. These reviews were narrative rather than systematic. The objective of the current systematic review is to provide a critical appraisal of epidemiologic evidence. METHODS A search of the MEDLINE/PUBMED database (1966-October 2004) was conducted for all published epidemiologic studies with maternal intake of caffeine as an exposure and major malformations as an outcome. Study characteristics were abstracted, internal validity evaluated, and study findings summarized. RESULTS Twenty-five papers met the initial criteria for inclusion, of which 18 were subsequently excluded as a result of other limitations. Effect estimates for the remaining 7 studies were generally close to null. Specific subgroup analyses were summarized across studies (associations between coffee and cardiovascular malformations, coffee and oral clefts, and tea and cardiovascular malformations). Summary point estimates ranged from 1.0 to 1.2; the upper limits of all confidence intervals were less than 1.7. CONCLUSIONS There is no evidence to support a teratogenic effect of caffeine in humans. Current epidemiologic evidence is not adequate to assess the possibility of a small change in risk of congenital anomalies resulting from maternal caffeine consumption.
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Affiliation(s)
- Marilyn L Browne
- Bureau of Environmental and Occupational Epidemiology, New York State Department of Health, Troy, USA.
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Spezielle Arzneimitteltherapie in der Schwangerschaft. ARZNEIVERORDNUNG IN SCHWANGERSCHAFT UND STILLZEIT 2006. [PMCID: PMC7271219 DOI: 10.1016/b978-343721332-8.50004-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Matijasevich A, Santos IS, Barros FC. Does caffeine consumption during pregnancy increase the risk of fetal mortality? A literature review. CAD SAUDE PUBLICA 2005; 21:1676-84. [PMID: 16410851 DOI: 10.1590/s0102-311x2005000600014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to evaluate the available epidemiological evidence of the effect of caffeine consumption during pregnancy on fetal mortality. A systematic qualitative review of observational studies that referred to any source of exposure to caffeine from food in pregnancy and to fetal mortality as the outcome was conducted in the databases MEDLINE and LILACS. Studies published between January 1966 and September 2004 were searched. The following descriptors were used: "caffeine", "coffee", "tea", "cola", and "cacao" to define the exposure and "fetal death", "stillbirth", "fetal demise", and "fetal loss" to define the outcome. The search strategy retrieved 32 publications, but only six met the inclusion criteria and three were included. One more article was found using "see related articles" feature in PubMed. A total of four publications were included in the review. The small number of publications addressing this subject, methodological limitations, inaccurate exposure assessment in all the studies, overall risks only marginally significant in most cases, and the possibility of publication bias preclude stating with certainty that caffeine consumption is actually associated with fetal death.
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Gokulakrishnan S, Chandraraj K, Gummadi SN. Microbial and enzymatic methods for the removal of caffeine. Enzyme Microb Technol 2005. [DOI: 10.1016/j.enzmictec.2005.03.004] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Knight CA, Knight I, Mitchell DC, Zepp JE. Beverage caffeine intake in US consumers and subpopulations of interest: estimates from the Share of Intake Panel survey. Food Chem Toxicol 2004; 42:1923-30. [PMID: 15500929 DOI: 10.1016/j.fct.2004.05.002] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2003] [Accepted: 05/05/2004] [Indexed: 01/27/2023]
Abstract
Concerns exist about the potential adverse health effects of high consumption of dietary caffeine, especially in children and pregnant women. Recommended caffeine intakes corresponding to no adverse health effects have been suggested recently for healthy adults (400-450 mg/day), for women contemplating pregnancy (300 mg/day), and for young children age 4-6 years (45 mg/day). To determine whether current caffeine intake approaches these levels, intake from major dietary sources (coffee, tea and carbonated soft drinks) were measured in 10,712 caffeinated beverage consumers in the 1999 US Share of Intake Panel, a targeted beverage survey. Mean caffeine intakes in adult caffeinated beverage consumers ranged from 106 to 170 mg/day (90th percentile intake was 227-382 mg/day). In children 1-5 and 6-9 years, mean caffeine intakes were 14 and 22 mg/day, respectively; corresponding 90th percentile intakes were 37 and 45 mg/day. Pregnant women consumed an average of 58 mg/day (157 mg/day at the 90th percentile), and women of reproductive age ingested 91-109 mg/day (229-247 mg/day at the 90th percentile). These data show that while mean caffeine intakes are within recommended safe levels, heavy consumers of certain subpopulations, including young children and women contemplating pregnancy, might benefit from dietary advice.
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Affiliation(s)
- C A Knight
- Knight International, 1402 W. Belden Avenue, Chicago, IL 60614-3010, USA.
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Cnattingius S, Ekbom A, Granath F, Rane A. Caffeine intake and the risk of spontaneous abortion. Food Chem Toxicol 2003; 41:1202; author reply 1203. [PMID: 12892094 DOI: 10.1016/s0278-6915(03)00103-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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