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Solianik R, Židonienė K, Baranauskienė N, Brazaitis M. Fasting for 48 h induced similar glucose intolerance in both sexes despite greater perceived stress and decreased estradiol levels in females. Eur J Appl Physiol 2024; 124:1449-1459. [PMID: 38108909 DOI: 10.1007/s00421-023-05378-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
PURPOSE The purpose of this study was to compare the effects of fasting for 48 h on the evoked insulin and glucose responses in males and females, and to explore factors such as stress and estrogen levels that might influence these responses. METHODS Healthy, nonobese male (n = 14) and female (n = 14) subjects underwent 48-h fasting trial. Changes in glucose tolerance and insulin levels in response to the oral glucose tolerance test, subjectively perceived stress and catecholamine concentrations were measured in all participants. Estrogen levels were also measured in the female participants during the 48-h fast. RESULTS Glucose area under the curve (AUC) values increased similarly in both sexes after 48-h fasting (P < 0.05), but females displayed a greater rise in insulin AUC values than males (P < 0.05). Fasting increased plasma epinephrine concentrations in both sexes (P < 0.05), whereas plasma norepinephrine concentrations and subjective stress increased only in females (P < 0.05). Plasma 17-β-estradiol concentrations in females decreased after fasting (P < 0.05). CONCLUSION Fasting for 48 h induced a similar glucose intolerance in females and males, despite decreased 17-β-estradiol levels and greater psychological and physiological stress in females. These differences represent a plausible explanation for the gender-based differences observed in insulin responses. TRIAL REGISTRATION Retrospectively registered on ClinicalTrials.gov (NCT05545943) in September 19, 2022.
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Affiliation(s)
- Rima Solianik
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto Str, 44221, Kaunas, Lithuania.
| | - Katerina Židonienė
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto Str, 44221, Kaunas, Lithuania
| | - Neringa Baranauskienė
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto Str, 44221, Kaunas, Lithuania
| | - Marius Brazaitis
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto Str, 44221, Kaunas, Lithuania
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Leszto K, Frąk W, Kurciński S, Sinkowska J, Skwira S, Młynarska E, Rysz J, Franczyk B. Associations of Dietary and Lifestyle Components with Atrial Fibrillation. Nutrients 2024; 16:456. [PMID: 38337740 PMCID: PMC10856828 DOI: 10.3390/nu16030456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Atrial fibrillation (AF) is a prevalent cardiac arrhythmia that still remains a significant health concern, especially due to its consequences, including stroke and heart failure. This review explores the intricate interplay between AF, lifestyle choices, and dietary habits. It is particularly focused on findings from diverse studies about non-pharmacological methods of managing AF. Moreover, its purpose is to elucidate the implementation of lifestyle changes such as physical activity or proper diet choices in the integrated treatment strategy of patients with AF.
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Affiliation(s)
- Klaudia Leszto
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Weronika Frąk
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Szymon Kurciński
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Julia Sinkowska
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Sylwia Skwira
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Ewelina Młynarska
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
| | - Jacek Rysz
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland
| | - Beata Franczyk
- Department of Nephrocardiology, Medical University of Lodz, Ul. Zeromskiego 113, 90-549 Lodz, Poland; (K.L.); (J.S.); (S.S.)
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Solianik R, Židonienė K, Brazaitis M. Short-duration cold exposure decreases fasting-induced glucose intolerance but has no effect on resting energy expenditure. Cryobiology 2023; 113:104564. [PMID: 37541564 DOI: 10.1016/j.cryobiol.2023.104564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/19/2023] [Accepted: 08/01/2023] [Indexed: 08/06/2023]
Abstract
The aim of the present study was to investigate whether brief cold exposure can reverse fasting-induced glucose intolerance and insulin resistance, and improve resting energy expenditure (REE). Twelve young non-obese women were randomly assigned to undergo the following conditions: 2 days of fasting with two 10-min whole-body cold-water immersions on separate days (FAST-COLD), 2 days of fasting without cold-water immersions (FAST), 2 days of usual diet with two 10-min whole-body cold-water immersions on separate days (COLD), or 2 days of usual diet without cold-water immersions (CON) in a randomised crossover fashion. Changes in REE and substrate utilisation, and glucose tolerance and insulin sensitivity from the oral glucose tolerance test were examined. The results showed that FAST-COLD and FAST trials increased (P < 0.05) REE and decreased (P < 0.05) respiratory quotient, but these variables did not differ significantly between the FAST-COLD and FAST trials. The glucose and insulin area under the curves (AUCs) were higher (P < 0.05) in the FAST-COLD and FAST trials than in the CON and COLD trials, and these AUCs were lower (P < 0.05) in the FAST-COLD than in the FAST trial. Matsuda index was lower in the FAST trial than in the CON trial (P < 0.05), and tended to be greater after the FAST-COLD trial than after the FAST trial (P = 0.060). In conclusion, cold exposure had no effect on REE but decreased fasting-induced glucose intolerance which was accompanied by a maintained insulin sensitivity.
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Affiliation(s)
- Rima Solianik
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania.
| | - Katerina Židonienė
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Marius Brazaitis
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
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Sang X, Li S, Guo R, Yan Q, Liu C, Zhang Y, Lv Q, Wu L, Ma J, You W, Feng L, Sun W. Dynamics and ecological reassembly of the human gut microbiome and the host metabolome in response to prolonged fasting. Front Microbiol 2023; 14:1265425. [PMID: 37854337 PMCID: PMC10579591 DOI: 10.3389/fmicb.2023.1265425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 09/13/2023] [Indexed: 10/20/2023] Open
Abstract
Introduction Prolonged fasting is an intervention approach with potential benefits for individuals with obesity or metabolic disorders. Changes in gut microbiota during and after fasting may also have significant effects on the human body. Methods Here we conducted a 7-days medically supervised water-only fasting for 46 obese volunteers and characterized their gut microbiota based on whole-metagenome sequencing of feces at five timepoints. Results Substantial changes in the gut microbial diversity and composition were observed during fasting, with rapid restoration after fasting. The ecological pattern of the microbiota was also reassembled during fasting, reflecting the reduced metabolic capacity of diet-derived carbohydrates, while other metabolic abilities such as degradation of glycoproteins, amino acids, lipids, and organic acid metabolism, were enhanced. We identified a group of species that responded significantly to fasting, including 130 fasting-resistant (consisting of a variety of members of Bacteroidetes, Proteobacteria, and Fusobacteria) and 140 fasting-sensitive bacteria (mainly consisting of Firmicutes members). Functional comparison of the fasting-responded bacteria untangled the associations of taxon-specific functions (e.g., pentose phosphate pathway modules, glycosaminoglycan degradation, and folate biosynthesis) with fasting. Furthermore, we found that the serum and urine metabolomes of individuals were also substantially changed across the fasting procedure, and particularly, these changes were largely affected by the fasting-responded bacteria in the gut microbiota. Discussion Overall, our findings delineated the patterns of gut microbiota alterations under prolonged fasting, which will boost future mechanistic and clinical intervention studies.
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Affiliation(s)
- Xiaopu Sang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, China
| | | | | | - Qiulong Yan
- Department of Microbiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Changxi Liu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yue Zhang
- Department of Microbiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Qingbo Lv
- Department of Microbiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Lili Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing, China
- Beijing Key Laboratory of Health Cultivation, Beijing University of Chinese Medicine, Beijing, China
| | - Jie Ma
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Wei You
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Ling Feng
- Second Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wen Sun
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing, China
- Beijing Key Laboratory of Health Cultivation, Beijing University of Chinese Medicine, Beijing, China
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Mk P, Kodali PB, Tewani GR, Sharma H, Nagarkar A. Physiological and Psychological Effects of Medically Supervised Fasting in Young Female Adults: An Observational Study. Cureus 2023; 15:e42183. [PMID: 37602022 PMCID: PMC10439666 DOI: 10.7759/cureus.42183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2023] [Indexed: 08/22/2023] Open
Abstract
Background Large-scale empirical and observational studies confirm the safety and efficacy of short-term intermittent fasting; however, prolonged fasting (fasting for more than two days or more) is not well studied. This study investigated the safety, physiological, and psychological effects of a medically supervised fasting (MSF) regimen on healthy volunteers. Methods In this observational study, 117 female participants with an average age of 21.02 (± 1.45) years underwent 10 days of medically supervised fasting. Daily symptom scores and 24-hour food recalls were collected, along with serum levels of vitamin D and calcium, a complete blood count, anthropometric measurements, quality of life (QoL), and subjective mood, anxiety, and depression scores, at the baseline and at the end of fasting. Results Compared to baseline, significant improvements were observed in vitamin D levels (z = -8.79, p = 0.000), calcium levels (z = -4.08, p = 0.000), red blood cell count (z = -4.61, p = 0.000), and hemoglobin levels (z = -5.57, p = 0.00). Improvements were observed in physical QOL (t (116) = -4.51, p = 0.000); psychological QOL (t (116) = -4.70, p = 0.000); and social QOL (t (116) = -2.68, p = 0.008). We also observed significant reductions in body weight (55.83 (±11.38), 52.99 (±10.94); p = 0.00) and other anthropometric measures. More than 80% (n = 94) experienced at least one symptom associated with fasting. The symptoms associated with fasting changed significantly (p<0.05), with most symptoms peaking from day 3 to day 7 of fasting with remission from day 8 onwards. Conclusion Our findings suggest that MSF is associated with significant improvements in physiological and psychological variables. The symptoms associated with MSF are to be considered in clinical decision-making, and follow-up of patients on fasting therapy, particularly during the peaking of symptoms, may be warranted.
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Affiliation(s)
- Pradeep Mk
- Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, IND
| | - Prakash B Kodali
- Department of Public Health and Community Medicine, Central University of Kerala, Kasaragod, IND
| | - Gulab R Tewani
- Department of Naturopathy, Sant Hirdaram Yoga and Nature Cure Hospital, Bhopal, IND
| | - Hemanshu Sharma
- Department of Community Medicine, Sant Hirdaram Medical College of Naturopathy and Yogic Sciences for Women, Bhopal, IND
| | - Aarti Nagarkar
- Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, IND
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