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AlZunaidy NA, Al-Khalifa AS, Alhussain MH, Mohammed MA, Alfheeaid HA, Althwab SA, Faris ME. The Effect of Ramadan Intermittent Fasting on Food Intake, Anthropometric Indices, and Metabolic Markers among Premenopausal and Postmenopausal Women: A Cross-Sectional Study. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1191. [PMID: 37512003 PMCID: PMC10385901 DOI: 10.3390/medicina59071191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/23/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023]
Abstract
Background and objectives: Ramadan intermittent fasting (RIF) is a monthlong practice in which Muslims fast during the whole day from sunrise to sunset. During this month, fasting people change their dietary behavior and alter their eating hours from day to night. The objective of the current study was to examine the effect of RIF on dietary consumption, anthropometric indices, and metabolic markers in healthy premenopausal (PRE-M) and postmenopausal (POST-M) Saudi women. Materials and Methods: The study included 62 women (31 PRE-M, 21-42 years, and 31 POST-M, 43-68 years). A structured questionnaire was used to collect socioeconomic data. Physical activity, anthropometric, dietary, and biochemical assessments were assessed before and at the end of the third week of Ramadan. Results: Socioeconomic data varied among participants. For both groups, observing RIF was associated with significantly (at either p ≤ 0.01 or p ≤ 0.05) lower intake of calories, macronutrients, minerals (excluding Na), and vitamins than before RIF. For the PRE-M group, the percentage of overweight participants decreased significantly (p ≤ 0.01) during Ramadan, while the percentage of obese participants remained unchanged. In contrast, for the POST-M group, the percentage of overweight participants increased significantly (p ≤ 0.05) during Ramadan, but dropped at the end of Ramadan. Following RIF, waist-to-hip ratio, body fat, and fat mass (FM) decreased in both groups. High-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), triglycerides (TG), and blood pressure (SBP, DBP) were generally maintained at acceptable normal levels in most participants before and at the end of RIF. However, low-density lipoprotein cholesterol (LDL-C) at the end of RIF was significantly lower than before, particularly in POST-M women. Age, occupation, and monthly income were the most important predictors for the changes in nutritional status and body fat upon RIF. Conclusions: observing RIF by PRE-M and POST-M Saudi women was associated with significant improvements in variable health indicators, with a few exceptions, and may help lower risk factors for chronic diseases, particularly among POST-M women. However, further studies with a larger sample size are required to determine and confirm the exact effect of RIF on these groups.
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Affiliation(s)
- Nada A AlZunaidy
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdulrahman S Al-Khalifa
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Maha H Alhussain
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammed A Mohammed
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hani A Alfheeaid
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Sami A Althwab
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - MoezAlIslam E Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
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Feyzioglu BS, Güven CM, Avul Z. Eight-Hour Time-Restricted Feeding: A Strong Candidate Diet Protocol for First-Line Therapy in Polycystic Ovary Syndrome. Nutrients 2023; 15:nu15102260. [PMID: 37242145 DOI: 10.3390/nu15102260] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/24/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
We aimed to investigate the effects of a 6-week program of 8 h time-restricted feeding (TRF) diet in polycystic ovary syndrome (PCOS), as determined by anthropometric, hormonal, metabolic profiles, and fecal calprotectin level. Thirty women diagnosed with PCOS underwent a 6-week 8 h TRF diet intervention. Age, anthropometric features (body mass index (BMI), waist-to-hip ratio (WHR)) and biochemical results were recorded. Free androgen index (FAI, defining hyperandrogenism) and the homeostatic model assessment-insulin resistance (HOMA-IR) were calculated. Baseline (pre-diet) and 6-week post-diet findings were compared. Mean age was 25.57 ± 2.67 years. BMI (p < 0.001) and WHR (p = 0.001) were found to have significantly decreased after the diet, as well as the percentage of patients defined to have hyperandrogenism (p = 0.016). Reproductive hormone levels, FAI (p < 0.001) and HOMA-IR (p < 0.001) were improved significantly. Metabolic parameters associated with glucose and lipid profiles were also significantly improved after the diet. Additionally, fecal calprotectin levels demonstrated a significant decrease from pre-diet to post-diet (p < 0.001). In conclusion, a 6-week diet intervention with 8 h TRF may be a suitable and effective intermittent fasting protocol that can be used as a first-line option in PCOS.
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Affiliation(s)
- Bihter Senem Feyzioglu
- Department of Obstetrics and Gynecology, Private Erciyes-Kartal Hospital, 38020 Kayseri, Turkey
| | - Cenk Mustafa Güven
- Department of Obstetrics and Gynecology, Izmir Private Can Hospital, 35630 Izmir, Turkey
| | - Zerrin Avul
- Department of Obstetrics and Gynecology, Private Erciyes-Kartal Hospital, 38020 Kayseri, Turkey
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Al-Jafar R, Wahyuni NS, Belhaj K, Ersi MH, Boroghani Z, Alreshidi A, Alkhalaf Z, Elliott P, Tsilidis KK, Dehghan A. The impact of Ramadan intermittent fasting on anthropometric measurements and body composition: Evidence from LORANS study and a meta-analysis. Front Nutr 2023; 10:1082217. [PMID: 36733380 PMCID: PMC9886683 DOI: 10.3389/fnut.2023.1082217] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/02/2023] [Indexed: 01/18/2023] Open
Abstract
Background Although the effect of Ramadan intermittent fasting (RIF) on anthropometry and body composition has been questioned, none of the previous studies tried to explain the reported changes in these parameters. Also, systematic reviews that investigated the topic were limited to healthy individuals or a specific disease group. Methods The London Ramadan Study (LORANS) is an observational study on health effects of RIF. We measured weight, waist circumference (WC), hip circumference (HC), body mass index (BMI), waist-to-hip ratio (WHR), basal metabolic rate (BMR), fat percentage (FP), free-fat mass (FFM), extremities predicted muscle mass, total body water (TBW), trunk FM, trunk FFM and trunk predicted muscle mass before and immediately after Ramadan. Using mixed-effects regression models, we investigated the effect of RIF with adjustment for potential confounders. We also conducted a meta-analysis of the results of LORANS with other studies that investigated the effect of RIF on anthropometry and body composition. The review protocol is registered with PROSPERO registry (CRD42020186532). Results We recruited 146 participants (Mean ± SD age = 43.3 ± 15 years). Immediately after Ramadan, compared with before Ramadan, the mean difference was-1.6 kg (P<0.01) in weight,-1.95cm (P<0.01) in WC,-2.86cm (P <0.01) in HC, -0.60 kg/m2 (P < 0.01) in BMI and -1.24 kg (P < 0.01) in FM. In the systematic review and meta-analysis, after screening 2,150 titles and abstracts, 66 studies comprising 7,611 participants were included. In the general population, RIF was followed by a reduction of 1.12 Kg in body weight (-1.89- -0.36, I2 = 0), 0.74 kg/m2 reduction in BMI (-0.96- -0.53, I2 = 0), 1.54cm reduction in WC (-2.37- -0.71, I2 = 0) and 1.76cm reduction in HC (-2.69- -0.83, I2 = 0). The effect of fasting on anthropometric and body composition parameters starts to manifest in the second week of Ramadan and starts to diminish 3 weeks after Ramadan. Conclusion RIF is associated with a reduction in body weight, BMI, WC, HC, FM, FP and TBW. Most of these reductions are partially attributed to reduced FM and TBW. The reductions in these parameters appear to reverse after Ramadan.
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Affiliation(s)
- Rami Al-Jafar
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- Department of Data Services, Lean Business Services, Riyadh, Saudi Arabia
| | - Nisa Sri Wahyuni
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - Karim Belhaj
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - Mohammad Hamed Ersi
- Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Zahra Boroghani
- Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
- Clinical Research Development of Shahid Mohammadi Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Amer Alreshidi
- Pharmaceutical Care Department, Hail General Hospital, Hail Health Cluster, Ministry of Health, Hail, Saudi Arabia
| | - Zahra Alkhalaf
- Dammam Medical Complex, Medical and Clinical Affairs, Dammam, Saudi Arabia
| | - Paul Elliott
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- Dementia Research Institute at Imperial College London, London, United Kingdom
- National Institute for Health Research Imperial College Biomedical Research Centre, Imperial College London, London, United Kingdom
| | - Konstantinos K. Tsilidis
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
| | - Abbas Dehghan
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- Dementia Research Institute at Imperial College London, London, United Kingdom
- MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
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Tarabeih M, Qaddumi J, Hamdan Z, Hassan M, Jebrin K, Khazneh E, Bahar S, Ahmed N, Sawalha R, Sawalmeh O. Increasing Overnight Fluid Intake and Kidney Function During Ramadan Fasting: A Randomized Controlled Trial. Transplant Proc 2023; 55:80-86. [PMID: 36549977 DOI: 10.1016/j.transproceed.2022.10.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 09/04/2022] [Accepted: 10/18/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND All healthy Arab individuals are obligated to abstain from eating, drinking, and sexual relations from dawn to sunset during Ramadan, which is one of the 5 pillars of Islam. Fasting effects various body systems, apart from the renal system. Fasting can also increase serum creatinine levels because of dehydration. Our aim was to examine the effects of increased fluid intake during the night on serum creatinine and urea levels. METHODS This randomized controlled trial included 58 healthy subjects who were randomly divided into 2 groups of 29. The hydrated group drank 2 to 3 L of fluid from sunset to the dawn of the next day. Kidney function was measured before, during, and 1 month after Ramadan. RESULTS After adjustment for sociodemographic variables, the control group exhibited higher means of serum concentrations of creatinine and urea and lower estimated glomerular filtration rate than the hydrated group. The Ramadan group exhibited highest means of serum levels of creatinine and urea and the lowest estimated glomerular filtration rate compared with the pre- and post-Ramadan periods. All results were statistically significant at P <.05. CONCLUSIONS We found that Ramadan fasting was not associated with a permanent increase in serum creatinine or urea. For those groups with a high fluid intake, serum creatinine and urea were significantly lower than the controls suggesting a favorable effect of hydration during the nonfasting hours. This compensated with the dehydration occurring during daylight, as dehydration is responsible for increased concentrations of urea and creatinine. This study adds further evidence that Ramadan fasting does not affect the renal system of healthy subjects; however, fluids should be increased at night, during nonfasting hours.
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Affiliation(s)
- Mahdi Tarabeih
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus.
| | - Jamal Qaddumi
- Department of Nursing, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus
| | - Zakaria Hamdan
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Mohannad Hassan
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Kamel Jebrin
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Emad Khazneh
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Sami Bahar
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Nabeel Ahmed
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Ramzi Sawalha
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
| | - Osama Sawalmeh
- Department of Nephrology, An-Najah National University Hospital, An-Najah National University, Nablus
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Jahrami H, Trabelsi K, Alhaj OA, Saif Z, Pandi-Perumal SR, BaHammam AS. The impact of Ramadan fasting on the metabolic syndrome severity in relation to ethnicity and sex: Results of a systematic review and meta-analysis. Nutr Metab Cardiovasc Dis 2022; 32:2714-2729. [PMID: 36333203 DOI: 10.1016/j.numecd.2022.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 10/14/2022]
Abstract
AIMS The primary goal of this meta-analysis was to examine the changes in various components of metabolic syndrome (MetS) in healthy adults who observed Ramadan fasting (RF) before Ramadan (T1) and at the end of RF (T2). A secondary goal was to assess the impact of RF on MetS severity in various ethnic and sex groups using the MetS z-score. DATA SYNTHESIS Using PRISMA2020, seven databases were searched for relevant studies published between January 1950 and March 2022. Data extraction involved high-density lipoprotein cholesterol (HDL), triglycerides (TG), fasting blood glucose (FBG), waist circumference (WC), systolic blood pressure (SBP), and diastolic blood pressure (DBP) for T1 and T2, respectively. The MetS z-score was computed according to international diabetes federation criteria. At T1, the pooled estimates of HDL, TG, FBG, WC, SBP, DBP, and MAP were 1.20 [1.13; 1.27] mmol/L, 1.32 [1.23; 1.42] mmol/L, 4.98 [4.82; 5.15] mmol/L, 87.21 [84.21; 90.21] Cm, 114.22 [101.45; 126.99] mmHg, 76.80 [70.12; 83.47] mmHg, and 89.27 [80.56; 97.98] mmHg, respectively. At T2, the pooled estimates of HDL, TG, FBG, WC, SBP, DBP, and MAP were 1.24 [1.18; 1.31] mmol/L, 1.24 [1.14; 1.34] mmol/L, 4.77 [4.55; 4.99] mmol/L, 85.73 [82.83; 88.64] Cm, 109.48 [97.20; 121.75] mmHg, 74.43 [68.01; 80.85] mmHg, and 86.11 [77.74; 94.48] mmHg, respectively. The MetS z-score showed improvement at T2 for all ethnic groups and both sexes by -0.22 [-0.24; -0.01]. CONCLUSIONS The current meta-analysis suggests that the RF positively impact the MetS components and the overall MetS z-score. PROSPERO REGISTRATION NUMBER ID CRD42022329297 OPEN SCIENCE FRAMEWORK IDENTIFIER: DOI 10.17605/OSF.IO/U9H7T.
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Affiliation(s)
- Haitham Jahrami
- Ministry of Health, Manama, Bahrain; Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain.
| | - Khaled Trabelsi
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia; Research Laboratory: Education, Motricity, Sport and Health, EM2S, LR19JS01, University of Sfax, Sfax 3000, Tunisia.
| | - Omar A Alhaj
- Department of Nutrition, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan.
| | | | - Seithikurippu R Pandi-Perumal
- Somnogen Canada Inc., College Street, Toronto, Canada; Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India.
| | - Ahmed S BaHammam
- The Strategic Technologies Program of the National Plan for Sciences and Technology and Innovation in the Kingdom of Saudi Arabia, Riyadh, Saudi Arabia; Department of Medicine, University Sleep Disorders Center and Pulmonary Service, King Saud University, Riyadh, KSA6, Saudi Arabia.
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Sulaiman SK, Tsiga-Ahmed FI, Faris ME, Musa MS, Akpan UAO, Umar AM, Abubakar SM, Allaham KK, Alyammahi T, Abdbuljalil MA, Javaid SF, Khan MAB. Nigerian Muslim's Perceptions of Changes in Diet, Weight, and Health Status during Ramadan: A Nationwide Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14340. [PMID: 36361226 PMCID: PMC9653919 DOI: 10.3390/ijerph192114340] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
The Islamic month of Ramadan is marked by fasting, when Muslims refrain from eating and drinking from dawn to sunset, which has an impact on their dietary habits. The study aimed to assess Nigerian Muslims' dietary modifications during Ramadan and their related changes in body weight and health status. A web-based cross-sectional study was conducted among Nigerian adult Muslims. The survey assessed sociodemographic, dietary habits, eating behaviors, food choices, perceived weight changes, and health status. The logistic regression model was used to assess the predictors of weight change and perceived health status. There were 770 participants, 62.9% of whom were women, ranging in age from 18 to 60 years with a mean age of 27.7 ± 6.4 years. Fruits, palm dates, homemade foods, milk products, and vegetables were more frequently consumed. There were fewer energy drinks, pastries, salty snacks, and carbonated or sugared drinks consumed during Ramadan than before. Over half (54.6%, 95% CI: 51.0-58.9%) of the respondents lost weight during Ramadan, 37.0% (95% CI: 17.4-38.6%) maintained their weight and 8.4% (95% CI: 6.6-10.6%) gained weight during the month. Nearly all (97.3%, 95% CI: 95.8-98.3%) reported having good health during Ramadan, and 2.7% (95% CI: 1.7-4.1%) reported having a poorer health state during Ramadan. There was a significant weight loss and healthy dietary change associated with Ramadan fasting in Nigeria. Public health measures must be in place to impart such positive health behaviors so that such healthy habits continue throughout the year.
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Affiliation(s)
- Sahabi Kabir Sulaiman
- Department of Internal Medicine, Yobe State University Teaching Hospital, Damaturu P.M.B 1047, Nigeria
| | - Fatimah Isma’il Tsiga-Ahmed
- Department of Community Medicine, Bayero University Kano/Aminu Kano Teaching Hospital, Kano P.M.B 3452, Nigeria
| | - MoezAlIslam E. Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
| | - Muhammad Sale Musa
- Department of Internal Medicine, Yobe State University Teaching Hospital, Damaturu P.M.B 1047, Nigeria
| | - Udoyen Abasi-okot Akpan
- Department of Medicine, National Pirogov Memorial Medical University, 21018 Vinnytsia, Ukraine
| | | | - Salisu Maiwada Abubakar
- Department of Biochemistry and Africa Centre of Excellence for Population Health and Policy, Bayero University, Kano P.M.B. 3011, Nigeria
| | - Kholoud K. Allaham
- Health and Wellness Research Group, Department of Family Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Taif Alyammahi
- Health and Wellness Research Group, Department of Psychiatry and Behavioral Sciences, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Munther A. Abdbuljalil
- Health and Wellness Research Group, Department of Family Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Syed Fahad Javaid
- Health and Wellness Research Group, Department of Psychiatry and Behavioral Sciences, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Moien AB Khan
- Health and Wellness Research Group, Department of Family Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
- Primary Care, NHS North West London, London TW3 3EB, UK
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Petersen MC, Gallop MR, Flores Ramos S, Zarrinpar A, Broussard JL, Chondronikola M, Chaix A, Klein S. Complex physiology and clinical implications of time-restricted eating. Physiol Rev 2022; 102:1991-2034. [PMID: 35834774 PMCID: PMC9423781 DOI: 10.1152/physrev.00006.2022] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/16/2022] [Accepted: 07/07/2022] [Indexed: 11/22/2022] Open
Abstract
Time-restricted eating (TRE) is a dietary intervention that limits food consumption to a specific time window each day. The effect of TRE on body weight and physiological functions has been extensively studied in rodent models, which have shown considerable therapeutic effects of TRE and important interactions among time of eating, circadian biology, and metabolic homeostasis. In contrast, it is difficult to make firm conclusions regarding the effect of TRE in people because of the heterogeneity in results, TRE regimens, and study populations. In this review, we 1) provide a background of the history of meal consumption in people and the normal physiology of eating and fasting; 2) discuss the interaction between circadian molecular metabolism and TRE; 3) integrate the results of preclinical and clinical studies that evaluated the effects of TRE on body weight and physiological functions; 4) summarize other time-related dietary interventions that have been studied in people; and 4) identify current gaps in knowledge and provide a framework for future research directions.
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Affiliation(s)
- Max C Petersen
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
- Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, Missouri
| | - Molly R Gallop
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah
| | - Stephany Flores Ramos
- Division of Gastroenterology, University of California, San Diego, La Jolla, California
| | - Amir Zarrinpar
- Division of Gastroenterology, University of California, San Diego, La Jolla, California
- Department of Veterans Affairs San Diego Health System, La Jolla, California
| | - Josiane L Broussard
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado
| | - Maria Chondronikola
- Departments of Nutrition and Radiology, University of California, Davis, California
- Departments of Nutrition and Dietetics, Harokopio University of Athens, Kallithea, Greece
| | - Amandine Chaix
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah
| | - Samuel Klein
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
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Mengi Çelik Ö, Koçak T, Köksal E. Effects of Diurnal Ramadan Intermittent Fasting on Cardiometabolic Risk Factors and Sleep Quality in Healthy Turkish Adults. Ecol Food Nutr 2022; 61:595-607. [PMID: 35730413 DOI: 10.1080/03670244.2022.2089878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to evaluate the effect of diurnal Ramadan fasting on cardiometabolic risk factors (blood glucose, lipid profile, inflammatory cytokines) and sleep quality in healthy Turkish adults. This prospective observational study was conducted with a total of 32 individuals (12 males, 20 females) who were aged between 19-32 years and fasted for 25 or more continuous days in Ankara, Turkey between 1 Ramadan 1442 and 30 Ramadan 1442. Individuals applied fasting for 16 hours in the spring season. Blood samples were taken after at least 8 hours of fasting, anthropometric measurements were taken and sleep quality was assessed using The Pittsburgh Sleep Quality Index (PSQI) at the beginning and the end of Ramadan. There was a significant decrease in body mass index (BMI), C-reactive protein (CRP), and tumor necrosis factor-alpha (TNF-α) levels during Ramadan fasting (p < .005). There were no changes in lipid profiles and sleep quality. There was a significant increase in fasting blood glucose levels (p < .05); however, this change is within normal limits. There was also a significant relationship between BMI and CRP, IL-6, and TNF-α levels (p < .05). The diurnal Ramadan fasting did not affect lipid profiles and sleep quality in healthy Turkish subjects. However, decreased BMI and inflammatory cytokine levels were observed at the end of Ramadan fasting. More studies are needed to clarify the role of Ramadan fasting in healthy populations.
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Affiliation(s)
- Özge Mengi Çelik
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Trakya University, Edirne, Turkey
| | - Tevfik Koçak
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Gazi University, Ankara, Turkey
| | - Eda Köksal
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Gazi University, Ankara, Turkey
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Craggs-Dino L, El Chaar M, Husain FA, Rogers AM, Lima AG, Sadegh M, Bashiti J, Chapmon K. American Society for Metabolic and Bariatric Surgery Review on Fasting for Religious Purposes after Surgery. Surg Obes Relat Dis 2022; 18:861-871. [DOI: 10.1016/j.soard.2022.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 11/28/2022]
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10
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Floyd R, Gryson R, Mockler D, Gibney J, Duggan SN, Behan LA. The Effect of Time-Restricted Eating on Insulin Levels and Insulin Sensitivity in Patients with Polycystic Ovarian Syndrome: A Systematic Review. Int J Endocrinol 2022; 2022:2830545. [PMID: 36159086 PMCID: PMC9507776 DOI: 10.1155/2022/2830545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 09/06/2022] [Indexed: 12/02/2022] Open
Abstract
RESULTS 2662 papers were identified with 37 selected for full-text review and one paper meeting criteria for inclusion. Ramadan fasting was the only time-restricted eating regimen trialled in this population with no strong evidence of a significant effect on insulin levels. CONCLUSION As the systematic review retrieved only one study investigating time-restricted eating to reduce insulin in patients with PCOS, there is no evidence to suggest that this intervention is effective. From the narrative review, based on studies in other patient groups, time-restricted eating could improve insulin resistance in those with PCOS; however, well-designed studies are required before this intervention can be recommended.
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Affiliation(s)
- R. Floyd
- Department of Endocrinology, Robert Graves Institute of Endocrinology, Tallaght University Hospital, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - R. Gryson
- Department of Obstetrics & Gynaecology, Rotunda Hospital, Dublin, Ireland
| | - D. Mockler
- John Stearne Medical Library, Trinity College Dublin, Trinity Centre for Health Sciences, Dublin, Ireland
| | - J. Gibney
- Department of Endocrinology, Robert Graves Institute of Endocrinology, Tallaght University Hospital, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - S. N. Duggan
- Department of Surgery, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - L. A. Behan
- Department of Endocrinology, Robert Graves Institute of Endocrinology, Tallaght University Hospital, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
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11
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Jahrami HA, Faris ME, I Janahi A, I Janahi M, Abdelrahim DN, Madkour MI, Sater MS, Hassan AB, Bahammam AS. Does four-week consecutive, dawn-to-sunset intermittent fasting during Ramadan affect cardiometabolic risk factors in healthy adults? A systematic review, meta-analysis, and meta-regression. Nutr Metab Cardiovasc Dis 2021; 31:2273-2301. [PMID: 34167865 DOI: 10.1016/j.numecd.2021.05.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/07/2021] [Accepted: 05/10/2021] [Indexed: 02/07/2023]
Abstract
AIMS This study aimed to evaluate the effects of Ramadan diurnal intermittent fasting (RDIF; 29-30 days) on cardiometabolic risk factors (CMRF) in healthy adults, and examine the effect of various cofactors on the outcomes using sub-group meta-regression. DATA SYNTHESIS We conducted a systematic review and meta-analysis to measure the effect sizes of changes in CMRF in healthy adult Muslims observing RDIF. Ten scientific databases (EBSCOhost, CINAHL, Cochrane, EMBASE, PubMed/MEDLINE, Scopus, Google Scholar, ProQuest Medical, ScienceDirect, and Web of Science) were searched from the date of inception (1950) to the end of November 2020. The CMRF searched and analyzed were total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), diastolic blood pressure (DBP), and heart rate (HR). We identified 91 studies (4431 adults aged 18-85 years) conducted between 1982 and 2020 in 23 countries distributed over four continents. RDIF-induced effect sizes for CMRF were: TC (no. of studies K = 77, number of subjects N = 3705, Hedge's g = -0.092, 95% confidence interval (CI): -0.168, 0.016); TG (K = 74, N = 3591, Hedge's g = -0.127, 95% CI: -0.203, 0.051); HDL-C (K = 68, N = 3528, Hedge's g = 0.138, 95% CI: 0.051, 0.224); LDL-C (K = 65, N = 3354, Hedge's g = -0.115, 95% CI: -0.197, -0.034); VLDL-C (K = 13, N = 648, Hedge's g = -0.252, 95% CI: -0.431, 0.073), DBP (K = 32, N = 1716, Hedge's g = -0.255, 95% CI: -0.363, 0.147), and HR (K = 12, N = 674, Hedge's g = -0.082, 95% CI: -0.300, 0.136). Meta-regression revealed that the age of fasting people was a significant moderator of changes in both HDL-C (P = 0.02) and VLDL-C (P = 0.01). Male sex was the only significant moderator of changes in LDL-C (P = 0.055). Fasting time duration was the only significant moderator of HDL-C (P = 0.001) at the end of Ramadan. CONCLUSIONS RDIF positively impacts CMRF, which may confer short-term transient protection against cardiovascular disease among healthy people.
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Affiliation(s)
- Haitham A Jahrami
- Ministry of Health, Bahrain; College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - MoezAlIslam E Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates.
| | - Abdulrahman I Janahi
- College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Mohamed I Janahi
- College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Dana N Abdelrahim
- Department of Nutrition and Food Technology, School of Agriculture, The University of Jordan, Amman, Jordan
| | - Mohamed I Madkour
- Department of Medical Laboratory Sciences, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mai S Sater
- College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Adla B Hassan
- College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Ahmed S Bahammam
- Department of Medicine, College of Medicine, University Sleep Disorders Center, King Saud University, Saudi Arabia; The Strategic Technologies Program of the National Plan for Sciences and Technology and Innovation in the Kingdom of Saudi Arabia, Riyadh, Saudi Arabia
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12
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Effects of Time-Restricted Feeding during Ramadan on Dietary Intake, Body Composition and Metabolic Outcomes. Nutrients 2020; 12:nu12082478. [PMID: 32824528 PMCID: PMC7468808 DOI: 10.3390/nu12082478] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 08/14/2020] [Indexed: 12/24/2022] Open
Abstract
Ramadan fasting is a form of time-restricted feeding which combines a fast and feast period daily for a duration of one month every year. During Ramadan, Muslims abstain from food and drink consumption from dawn till sunset and this change in the meal schedule and frequency results in significant changes to the composition of the diet, such as energy and nutrient intake. These changes in dietary habits and their corresponding effects on cardiometabolic disease risk are compiled in this review. Ramadan fasting shows limited benefits to body composition via reductions in body mass in both healthy and obese individuals, although the results are often found to be transient and heterogeneous. There is, however, a more consistent improvement in blood lipid profile during Ramadan fasting, which often lasts beyond the Ramadan period. The results for glucose homeostasis, on the contrary, are more conflicting and inconclusive. The heterogeneity in the findings from the various studies can be generally attributed to cultural variations in dietary habits, differences in the duration of fasting due to seasonal/climatic differences at various geographical locations, age, gender and socioeconomic status, as well as other health and lifestyle factors of the various study populations.
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13
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Ramadan Intermittent Fasting Affects Adipokines and Leptin/Adiponectin Ratio in Type 2 Diabetes Mellitus and Their First-Degree Relatives. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1281792. [PMID: 32775407 PMCID: PMC7407010 DOI: 10.1155/2020/1281792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 07/07/2020] [Accepted: 07/20/2020] [Indexed: 12/02/2022]
Abstract
Background In view of the association of Ramadan intermittent fasting with profound changes in lifestyle both in nondiabetic and diabetic patients, the aim of this study was to investigate the effect of Ramadan fasting on adiponectin, leptin and leptin to adiponectin ratio (LAR), growth hormone (GH), human-sensitive C-reactive protein (hs-CRP), and diabetic and metabolic syndrome factors in patients with Type 2 Diabetes Mellitus (Type 2 DM), their first-degree relatives (FDRs), and healthy controls. Methods This cohort study involved 98 Yemeni male subjects aged 30-70 years old: 30 Type 2 DM, 37 FDRs of Type 2 diabetic patients, and 31 healthy control subjects. Subjects' body mass index (BMI), waist circumference (WC), and blood pressure (BP) were measured, and venous blood samples were collected twice: the first samples were collected a couple of days prior to Ramadan fasting (baseline) and the second samples after 3 weeks of fasting. Results Ramadan fasting did not affect BMI, WC, and BP in Type 2 DM and their FDRs with respect to the baseline levels prior to Ramadan, whereas triglyceride and cholesterol were borderline significantly decreased in Type 2 DM with no effect in FDRs. Fasting blood glucose was not affected in Type 2 DM but was significantly increased in FDRs and control groups, whereas glycated haemoglobin (HbA1c) was slightly decreased in Type 2 DM, FDRs, and healthy controls. C-peptide, insulin, and insulin resistance (HOMA-IR) were significantly increased in Type 2 DM and FDRs, with no effect in the control group, whereas β-cell function (HOMA-β) was significantly decreased in FDRs and controls with no change in Type 2 DM. Ramadan fasting significantly decreased GH in both FDRs and control groups, and significantly increased hs-CRP in the control with no effect in Type 2 DM and FDRs. Adiponectin was significantly decreased, and leptin and LAR were significantly increased in Type 2 DM, FDRs, and control groups. Conclusion Ramadan intermittent fasting decreased adiponectin and increased leptin, LAR, insulin, and insulin resistance in both Type 2 DM and FDRs as well as decreased GH in both FDRs and healthy controls and increased hs-CRP in healthy controls. Moreover, Ramadan intermittent fasting neither worsens a patient's glycemic parameters nor improves it, with the exception of a slight improvement in HbA1c in Type 2 DM, FDRs, and healthy controls.
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14
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Faris MAI, Jahrami H, BaHammam A, Kalaji Z, Madkour M, Hassanein M. A systematic review, meta-analysis, and meta-regression of the impact of diurnal intermittent fasting during Ramadan on glucometabolic markers in healthy subjects. Diabetes Res Clin Pract 2020; 165:108226. [PMID: 32446800 DOI: 10.1016/j.diabres.2020.108226] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/30/2020] [Accepted: 05/16/2020] [Indexed: 12/13/2022]
Abstract
AIM Studies on the effect of Ramadan diurnal intermittent fasting (RDIF) on glucometabolic markers have yielded conflicting results. We conducted ameta-analysis to estimate the effect size for changes in glucometabolic markers in healthy, non-athletic Muslims during Ramadan, and to assess the effect of variable covariates using meta-regression. METHODS CINAHL, Cochrane, EBSCOhost, EMBASE, Google Scholar, ProQuest Medical, PubMed/MEDLINE, ScienceDirect, Scopus, and Web of Science databases were searched from date of inceptionto January 2020. The glucometabolic markers analyzed were: fasting glucose (FG), insulin, insulin resistance (HOMA-IR), leptin, and adiponectin. RESULTS We identified seventy-two studies (3134 participants in total) that were conducted in 22 countries between 1982 and 2020. RDIF-induced effect sizes for the glucometabolic markers were: FG (no. of studies K = 61, number of subjects N = 2743, Hedges'g = -0.102, 95% CI: -0.194, -0.01); serum insulin (K = 16, N = 648, Hedges'g = 0.030 95% CI: -0.165, 0.226); HOMA-IR (K = 10, N = 349, Hedges'g = -0.012, 95% CI: -0.274, 0.250); leptin (K = 13, N = 442, Hedges'g = -0.010, 95% CI: -0.243, 0.223); and adiponectin (K = 11, N = 511, Hedges'g = 0.034, 95% CI: -0.227, 0.296). CONCLUSION RDIF imposes no adverse metabolic impacts, and might help in improving some glucometabolic markers in healthy subjects.
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Affiliation(s)
- Mo'ez Al-Islam Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates.
| | - Haitham Jahrami
- Rehabilitation Services, Periphery Hospitals, Ministry of Health, Manama, Bahrain; College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Ahmed BaHammam
- Department of Medicine, College of Medicine, University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia; The Strategic Technologies Program of the National Plan for Sciences and Technology and Innovation in the Kingdom of Saudi Arabia, Riyadh, Saudi Arabia
| | - Zaina Kalaji
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mohammed Madkour
- Department of Medical Laboratory Sciences, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mohamed Hassanein
- Endocrine Department, Dubai Hospital, Dubai Health Authority, Dubai, United Arab Emirates
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15
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Akın S, Özer FF, Şahin GG, Özer NT. Effects of Ramadan fasting on lean body mass in the older people. Eur Geriatr Med 2020; 11:163-168. [PMID: 32297235 DOI: 10.1007/s41999-019-00272-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/19/2019] [Indexed: 11/25/2022]
Abstract
PURPOSE In Islam, Ramadan fasting is a unique model that is associated with the restriction of food and fluid intake. We aimed to estimate the physiological effects of Ramadan fasting on muscle function and muscle mass in the older people. METHODS A random sample was recruited from healthy older Muslims people aged 60 years and older, who expressed an intention to fast for 30 days during the month of Ramadan. Walking speed was expressed in meters per second (m/s). Muscle strength was assessed by hand grip strength (HGS) with a dynamometer. A Bioelectrical impedance analysis (BIA) device (BodystatQuadScan 1500, UK) was used for the evaluation of body composition. Dietary data of the patients during Ramadan were obtained by a 43-item Food Frequency Questionnaire (FFQ). RESULTS The mean age [Standard Deviation(SD)] of the older people was 66.7(4.7) years of age and 50% were females. There were no significant changes in body weight, muscle function and muscle mass before and after Ramadan fasting in both genders. The mean SMI, mean (SD) kg/m2, values of females and males with adequate milk and yogurt consumption before and after Ramadan fasting were 8.03 (0.75) kg/m2 and 8.43(1.03) kg/m2 for females (p = 0.133) and 10.11(0.79) kg/m2 and 10.35 (0.93) kg/m2 for males (p = 0.59), respectively. CONCLUSIONS Ramadan fasting supplied no risk for muscle function and muscle mass in the older people. If the older people consume enough milk and yogurt in Ramadan, they may not loss muscle mass.
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Affiliation(s)
- Sibel Akın
- Division of Geriatrics, Department of Internal Medicine, Erciyes School of Medicine, Erciyes University, Melikgazi, 38090, Kayseri, Turkey.
| | - Firuzan Fırat Özer
- Division of Geriatrics, Department of Internal Medicine, Erciyes School of Medicine, Erciyes University, Melikgazi, 38090, Kayseri, Turkey
| | - Gülşah Güneş Şahin
- Department of Clinical Nutrition, Erciyes School of Medicine, Erciyes University, Melikgazi, 38090, Kayseri, Turkey
| | - Nurhayat Tuğra Özer
- Department of Clinical Nutrition, Erciyes School of Medicine, Erciyes University, Melikgazi, 38090, Kayseri, Turkey
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Jahrami HA, Alsibai J, Clark CCT, Faris MAIE. A systematic review, meta-analysis, and meta-regression of the impact of diurnal intermittent fasting during Ramadan on body weight in healthy subjects aged 16 years and above. Eur J Nutr 2020; 59:2291-2316. [DOI: 10.1007/s00394-020-02216-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/26/2020] [Indexed: 12/13/2022]
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17
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Alzoughool F, Al Hourani H, Atoum M, Abdelgader R, Alanagreh L. Irisin, leptin and adiponectin levels are reduced significantly during fasting. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2019. [DOI: 10.3233/mnm-190322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Foad Alzoughool
- Department of Laboratory Medical Sciences, Faculty of Applied Health Sciences, The Hashemite University, Zarqa, Jordan
| | - Huda Al Hourani
- Department of Clinical Nutrition and Dietetics, The Hashemite University, Zarqa, Jordan
| | - Manar Atoum
- Department of Laboratory Medical Sciences, Faculty of Applied Health Sciences, The Hashemite University, Zarqa, Jordan
| | - Rana Abdelgader
- Department of Laboratory Medical Sciences, Faculty of Applied Health Sciences, The Hashemite University, Zarqa, Jordan
| | - Loai Alanagreh
- Department of Laboratory Medical Sciences, Faculty of Applied Health Sciences, The Hashemite University, Zarqa, Jordan
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18
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Impact of Ramadan diurnal intermittent fasting on the metabolic syndrome components in healthy, non-athletic Muslim people aged over 15 years: a systematic review and meta-analysis. Br J Nutr 2019; 123:1-22. [PMID: 31581955 DOI: 10.1017/s000711451900254x] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Studies on the impact of Ramadan diurnal intermittent fasting (RDIF) on the metabolic syndrome (MetS) components among healthy Muslims observing Ramadan month have yielded contradictory results. This comprehensive meta-analysis aimed to obtain a more stable estimate of the effect size of fasting during Ramadan on the MetS components, examine variability among studies, assess the generalisability of reported results and perform subgroup analyses for associated factors. We searched the CINAHL, Cochrane, EBSCOhost, Google Scholar, ProQuest Medical, PubMed/MEDLINE, ScienceDirect, Scopus and Web of Science databases for relevant studies published from 1950 to March 2019. The MetS components analysed were: waist circumference (WC), systolic blood pressure (SBP), fasting plasma/serum glucose (FG), TAG, and HDL-cholesterol. We identified eighty-five studies (4326 participants in total) that were conducted in twenty-three countries between 1982 and 2019. RDIF-induced effect sizes for the MetS components were: small reductions in WC (no. of studies K = 24, N 1557, Hedges' g = -0·312, 95 % CI -0·387, -0·236), SBP (K = 22, N 1172, Hedges' g = -0·239, 95 % CI -0·372, -0·106), FG (K = 51, N 2318, Hedges' g = -0·101, 95 % CI -0·260, 0·004) and TAG (K = 63, N 2862, Hedges' g = -0·088, 95 % CI -0·171, -0·004) and a small increase in HDL-cholesterol (K = 57, N 2771, Hedges' g = 0·150, 95 % CI 0·064, 0·236). We concluded that among healthy people, RDIF shows small improvement in the five MetS components: WC, SBP, TAG, FG and HDL.
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19
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Beltaief K, Bouida W, Trabelsi I, Baccouche H, Sassi M, Dridi Z, Chakroun T, Hellara I, Boukef R, Hassine M, Addad F, Razgallah R, Khochtali I, Nouira S. Metabolic effects of Ramadan fasting in patients at high risk of cardiovascular diseases. Int J Gen Med 2019; 12:247-254. [PMID: 31410047 PMCID: PMC6643153 DOI: 10.2147/ijgm.s172341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 02/14/2019] [Indexed: 01/08/2023] Open
Abstract
Background and aim The effects of Ramadan fasting on health are a little controversial. The present study is aimed at evaluating the metabolic effects on a group of 517 patients with ≥2 cardiovascular risk factors over a period running from 2012 to 2014. Methods Each patient was assessed at three visits: before, during, and after Ramadan. Demographical, clinical and biological tests were performed at each visit. Results Metabolically, we noted a significant and discrete rise in blood glucose level (+1.2 mmol/L), triglycerides (+0.3 mmol/L), cholesterol (+0.12 mmol/L) and creatinine (+3 µmol/L) during Ramadan. These disturbances decreased significantly after Ramadan. The same variations were observed among diabetics (n=323). However, there was a significant decrease in HbA1c after Ramadan (9.0% vs 7.6%, p<0.001). Our findings also revealed there was no significant correlation between variations of metabolic parameters and dietary intake. No acute metabolic incidents were reported during the study period. Conclusion The current study showed that Ramadan is responsible for a transient but well tolerated disturbance of metabolic parameters followed by a significant post-Ramadan improvement. These changes did not seem to be directly related to dietary intake.
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Affiliation(s)
- K Beltaief
- Emergency Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia.,Research Laboratory (LR12SP18), University of Monastir, Monastir, Tunisia
| | - W Bouida
- Emergency Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia.,Research Laboratory (LR12SP18), University of Monastir, Monastir, Tunisia
| | - I Trabelsi
- Emergency Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia.,Research Laboratory (LR12SP18), University of Monastir, Monastir, Tunisia
| | - H Baccouche
- Emergency Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia.,Research Laboratory (LR12SP18), University of Monastir, Monastir, Tunisia
| | - M Sassi
- Biological Laboratory, Maternity and Neonatal Medicine Center, Monastir, Tunisia
| | - Z Dridi
- Cardiology Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - T Chakroun
- Regional Blood Transfusion Center, Farhat Hached University Hospital, Sousse, Tunisia
| | - I Hellara
- Hematology Department, Fattouma Bourguiba University Hospital, Monasitr, Tunisia
| | - R Boukef
- Emergency Department, Sahloul University Hospital, Sousse, Tunisia
| | - M Hassine
- Hematology Department, Fattouma Bourguiba University Hospital, Monasitr, Tunisia
| | - F Addad
- Cardiology Department, Abderrahman Mami University Hospital, Ariana 1080, Tunisia
| | | | - I Khochtali
- Endocrinology and Internal Medicine Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - S Nouira
- Emergency Department, Fattouma Bourguiba University Hospital, Monastir, Tunisia.,Research Laboratory (LR12SP18), University of Monastir, Monastir, Tunisia
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20
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Armutcu F. Fasting may be an alternative treatment method recommended by physicians. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2019. [DOI: 10.29333/ejgm/104620] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Effect of Ramadan Fasting on Weight and Body Composition in Healthy Non-Athlete Adults: A Systematic Review and Meta-Analysis. Nutrients 2019; 11:nu11020478. [PMID: 30813495 PMCID: PMC6412279 DOI: 10.3390/nu11020478] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/16/2019] [Accepted: 02/18/2019] [Indexed: 02/03/2023] Open
Abstract
Background: Ramadan involves one month of fasting from sunrise to sunset. In this meta-analysis, we aimed to determine the effect of Ramadan fasting on weight and body composition. Methods: In May 2018, we searched six databases for publications that measured weight and body composition before and after Ramadan, and that did not attempt to influence physical activity or diet. Results: Data were collected from 70 publications (90 comparison groups, 2947 participants). There was a significant positive correlation between starting body mass index and weight lost during the fasting period. Consistently, there was a significant reduction in fat percentage between pre-Ramadan and post-Ramadan in people with overweight or obesity (−1.46 (95% confidence interval: −2.57 to −0.35) %, p = 0.010), but not in those of normal weight (−0.41 (−1.45 to 0.63) %, p = 0.436). Loss of fat-free mass was also significant between pre-Ramadan and post-Ramadan, but was about 30% less than loss of absolute fat mass. At 2–5 weeks after the end of Ramadan, there was a return towards, or to, pre-Ramadan measurements in weight and body composition. Conclusions: Even with no advice on lifestyle changes, there are consistent—albeit transient—reductions in weight and fat mass with the Ramadan fast, especially in people with overweight or obesity.
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Ongsara S, Boonpol S, Prompalad N, Jeenduang N. The Effect of Ramadan Fasting on Biochemical Parameters in Healthy Thai Subjects. J Clin Diagn Res 2017; 11:BC14-BC18. [PMID: 29207694 DOI: 10.7860/jcdr/2017/27294.10634] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 08/01/2017] [Indexed: 11/24/2022]
Abstract
Introduction Although, the effect of Ramadan fasting on the risks for Cardiovascular Disease (CVD) has been reported in several studies, the results were inconsistent. In addition, the effect of Ramadan fasting on biochemical parameters in Thai subjects has not been evaluated. Aim The aim of this study was to investigate the effect of Ramadan fasting on anthropometry, blood pressure, Fasting Blood Glucose (FBG), lipid profiles, and body composition in healthy Thai subjects. Materials and Methods A total of 65 healthy subjects (21 men and 44 women) aged between 19-24 years were randomly recruited. Anthropometry, blood pressure, FBG, Total Cholesterol (TC), Triglyceride (TG), High Density Lipoprotein-Cholesterol (HDL-C), Low Density Lipoprotein-Cholesterol (LDL-C), and body composition were measured before Ramadan, end of Ramadan and after one month of Ramadan. Results There were no changes in anthropometry, blood pressure, lipid profiles and body composition in both genders before Ramadan, end of Ramadan and after one month of Ramadan. Nevertheless, FBG levels were significantly increased after one month of Ramadan compared with baseline (5.09±0.50 versus 4.83±0.38 mmol/L, p=0.016, respectively) in women. Conclusion The Ramadan fasting did not affect the lipid, anthropometric and body composition in healthy Thai subjects. However, the increased FBG levels after one month of Ramadan were observed in women. To improve the favourable biochemical parameters after Ramadan fasting, the lifestyle modifications such as, increased intake of healthy diets and increased physical activity should be recommended.
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Affiliation(s)
- Sara Ongsara
- Undergraduate Student, Department of Clinical Chemistry, School of Allied Health Sciences, Thaiburi, Tha Sala, Nakhon Si Thammarat, Thailand
| | - Sakulrat Boonpol
- Undergraduate Student, Department of Clinical Chemistry, School of Allied Health Sciences, Thaiburi, Tha Sala, Nakhon Si Thammarat, Thailand
| | - Nussaree Prompalad
- Undergraduate Student, Department of Clinical Chemistry, School of Allied Health Sciences, Thaiburi, Tha Sala, Nakhon Si Thammarat, Thailand
| | - Nutjaree Jeenduang
- Assistant Professor, Department of Clinical Chemistry, School of Allied Health Sciences, Thaiburi, Tha Sala, Nakhon Si Thammarat, Thailand
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Harder-Lauridsen NM, Rosenberg A, Benatti FB, Damm JA, Thomsen C, Mortensen EL, Pedersen BK, Krogh-Madsen R. Ramadan model of intermittent fasting for 28 d had no major effect on body composition, glucose metabolism, or cognitive functions in healthy lean men. Nutrition 2016; 37:92-103. [PMID: 28359370 DOI: 10.1016/j.nut.2016.12.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/28/2016] [Accepted: 12/17/2016] [Indexed: 11/28/2022]
Abstract
OBJECTIVES There has been a parallel increase in the incidence of obesity and diabetes as well as the number of daily meals. However, evidence is lacking regarding the role of intermittent fasting. The aim of this study was to determine the effects of a Ramadan model of intermittent fasting (RIF; 14 h of daytime abstinence from food and drinking) for 28 d on body composition, glucose metabolism, and cognitive function. METHODS Ten healthy, lean men were included in a nonrandomized, crossover, intervention study. Testing was performed before a control period of 28 d, as well as before and after 28 d of RIF. Whole-body dual-energy x-ray absorptiometry, magnetic resonance imaging of the abdomen, fitness test, oral glucose tolerance test, and cognitive function tests were performed. As secondary outcome, the participants' physical activity and 72-h glycemic responses were monitored 6 d within each of the periods. Dietary intake, appetite, and mood questionnaires also were assessed. RESULTS Comparing Δ differences from testing days; body mass index changes from the control period (Δ mean: 0.2 kg/m2, 95% confidence interval [CI], -2 to 0.5) and the RIF period (Δ mean: -0.3 kg/m2, 95% CI, -0.6 to -0.1) were significantly different (P < 0.05). Secondary outcomes within the RIF period showed an increased area under curve (AUC) for hunger accompanied by a reduced AUC for satiety (both, P < 0.05), less mean steps per day (P < 0.05), and less positive feelings in the afternoon (P < 0.01) compared with the control period. No changes were observed in any of the other evaluated parameters. CONCLUSIONS Free-living participants were able to comply with 14 h of daily daytime abstinence from food and drinking for 28 d with only a minor effect on body mass index and without any effects on body composition, glucose metabolism, and cognitive function.
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Affiliation(s)
- Nina M Harder-Lauridsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark.
| | - Astrid Rosenberg
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
| | - Fabiana B Benatti
- Applied Physiology & Nutrition Research Group, University of São Paulo, Brazil
| | - Julie A Damm
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
| | - Carsten Thomsen
- Department of Diagnostic Sciences, Rigshospitalet, Copenhagen, Denmark
| | - Erik L Mortensen
- Department of Public Health and Center for Healthy Aging, University of Copenhagen, Denmark
| | - Bente K Pedersen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
| | - Rikke Krogh-Madsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
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