Cited by 382Dietary Effects on HealthDiet and metabolism studiesNutritional Studies and Diet

Effects of intermittent fasting on body composition and clinical health markers in humans

Tinsley, Grant M., La Bounty, Paul M.·2015·Nutrition Reviews

Abstract

Intermittent fasting is a broad term that encompasses a variety of programs that manipulate the timing of eating occasions by utilizing short-term fasts in order to improve body composition and overall health. This review examines studies conducted on intermittent fasting programs to determine if they are effective at improving body composition and clinical health markers associated with disease. Intermittent fasting protocols can be grouped into alternate-day fasting, whole-day fasting, and time-restricted feeding. Alternate-day fasting trials of 3 to 12 weeks in duration appear to be effective at reducing body weight (≈3%-7%), body fat (≈3-5.5 kg), total cholesterol (≈10%-21%), and triglycerides (≈14%-42%) in normal-weight, overweight, and obese humans. Whole-day fasting trials lasting 12 to 24 weeks also reduce body weight (≈3%-9%) and body fat, and favorably improve blood lipids (≈5%-20% reduction in total cholesterol and ≈17%-50% reduction in triglycerides). Research on time-restricted feeding is limited, and clear conclusions cannot be made at present. Future studies should examine long-term effects of intermittent fasting and the potential synergistic effects of combining intermittent fasting with exercise.

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  • Alternate-day fasting alternates fasting or calorie-restricted days with ad libitum feeding days, whereas whole-day fasting restricts caloric intake on two nonconsecutive days per week while permitting unrestricted eating on the remaining 5 days.

    “ADF alternates fasting or calorie-restricted days with ad libitum feeding days, whereas WDF restricts caloric intake on two nonconsecutive days per week while permitting unrestricted eating on the remaining 5 days (11, 13, 14).”

    From Intermittent fasting versus continuous energy restriction in MASLD: a systematic review and meta-analysis (2026) · cites this paper as [11]

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  • Feeding periods after 16:00 had either no effect or unfavorable effects on postprandial glycemia, β-cell responsiveness, BP, and blood lipids.

    “Feeding periods after 16:00 had either no effect or unfavorable effects on postprandial glycemia, β-cell responsiveness, BP, and blood lipids [360,361,362].”
  • Whole day fasting studies with a duration of 12-24 weeks achieved a 3-9% body weight loss, body fat loss, and lowering of blood lipids (approximately 5-20% for total cholesterol and 17-50% for triglycerides).

    “Whole day fasting studies with a duration of 12–24 weeks also achieved a 3–9% body weight loss, body fat loss and lowering of blood lipids (approximately 5–20% for total cholesterol and 17–50% for triglycerides) [360].”
  • ADF studies in normal weight, overweight, and obese subjects with a duration of 3-12 weeks were effective in achieving an approximately 3-7% weight loss, 3-5.5 kg body fat loss, and lowering blood lipids (approximately 10-21% for total cholesterol and 14-42% for triglycerides).

    “It has been reported that ADF studies in normal weight, overweight, and obese subjects with a duration of 3–12 weeks were effective in achieving an approximately 3–7% weight loss, 3–5.5 kg body fat loss, lowering blood lipids (approximately 10–21% for total cholesterol and 14–42% for triglycerides) [360].”

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Research works printed but not linked: 2

  1. [52]52. Ahmadian M, Duncan RE, Sul HS. Skinny on fat metabolism: lipolysis and fatty acid utilization. Trends Endocrinol Metab. 2009;20:424-428.
  2. [58]58. Wolfram G, Kirchgessner M, Mu ¨ller HL, et al. Thermogenesis in humans after vary- ing meal time frequency [in German]. Ann Nutr Metab. 1987;31:88-97.

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Authors
Tinsley, G. M., & La Bounty, P. M.
Affiliations
Baylor University (US)
Corresponding author
Tinsley, Grant M.
Venue
Nutrition Reviews
Published
2015-09-15
Volume
73
Issue
10
Pages
661-674
ISSN
  • 0029-6643 (ISSN-L)
  • 1753-4887
OpenAlex
W2206659309
Cited by
382
References
85
Citations by year
2026: 25 · 2025: 53 · 2024: 42 · 2023: 57 · 2022: 56 · 2021: 39 · 2020: 40 · 2019: 25 · 2018: 18 · 2017: 16 · 2016: 10
FWCI
1.80
Type
journal article
Language
en
Open access
closed
Locations
  • Nutrition Reviews (publishedVersion)
  • PubMed (publishedVersion)
Funders
Baylor University
Topics
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Health Sciences › Medicine › Physiology › Diet and metabolism studies
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
Keywords
intermittent fasting, body composition, weight loss, fat loss, alternate-day fasting, time-restricted feeding, serum lipids, cholesterol, triglycerides, obesity
MeSH terms
Blood Pressure, Body Composition, Body Weight, Cholesterol, Eating, Fasting, Humans, Lipids, Obesity, Triglycerides, Biomarkers, Exercise, Overweight

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