Randomized controlled trial2022

Calorie Restriction with or without Time-Restricted Eating in Weight Loss

Liu D, Huang Y, Huang C, Yang S, Wei X, Zhang P, Guo D, Lin J, Xu B, Li C, He H, He J, Liu S, Shi L, Xue Y, Zhang H

The New England journal of medicine · 372 citations

How it was studied

Design
Randomized controlled trial (indexed by PubMed)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Independent funding
Government
National Natural Science Foundation of China
University or hospital
Nanjing Agricultural University
University or hospital
Southern Medical University
University or hospital
Nanfang Hospital
Government
National Key Research and Development Project of China
University or hospital
Key-Area Clinical Research Program of Southern Medical University
Government
Key-Area Research and Development Program of Guangdong Province
Grants
Southern Medical University (2019B020227004); Southern Medical University (LC2019ZD010); National Natural Science Foundation of China (81970736); Southern Medical University (2018YFA0800404); National Natural Science Foundation of China (Nos.2018B030311031); National Natural Science Foundation of China (LC2019ZD010); Nanjing Agricultural University (No.2018YFA0800404); Southern Medical University (81970736)

Based on 7 listed funder(s).

Publication

Published
2022-04-20 · N Engl J Med · vol. 386 · issue 16 · pp. 1495–1504
Publisher
Massachusetts Medical Society
Cited
526 citations · more than 100% of similar papers · 49.7× the field average
Impact
Top 10% most cited in its field
References
27 works
Access
Free to read
Research areas
Dietary Effects on Health · Enhanced Recovery After Surgery · Circadian rhythm and melatonin
Keywords
Calorie restriction, Waist, Calorie, Body mass index, Medicine, Obesity, Weight loss, Circumference, Body weight, Low calorie diet, Demography, Internal medicine, Mathematics
MeSH
humans, obesity, weight loss, body mass index, caloric restriction, fasting, body composition, time factors, female, male

16 authors

From CN, US

  • Deying LiuNanfang Hospital; Southern Medical University
  • Yan HuangNanfang Hospital; Southern Medical University
  • Chensihan HuangNanfang Hospital; Southern Medical University
  • Shunyu YangNanfang Hospital; Southern Medical University
  • Xueyun WeiNanfang Hospital; Southern Medical University
  • Peizhen ZhangNanfang Hospital; Southern Medical University

Abstract

Background

The long-term efficacy and safety of time-restricted eating for weight loss are not clear.

Methods

We randomly assigned 139 patients with obesity to time-restricted eating (eating only between 8:00 a.m. and 4:00 p.m.) with calorie restriction or daily calorie restriction alone. For 12 months, all the participants were instructed to follow a calorie-restricted diet that consisted of 1500 to 1800 kcal per day for men and 1200 to 1500 kcal per day for women. The primary outcome was the difference between the two groups in the change from baseline in body weight; secondary outcomes included changes in waist circumference, body-mass index (BMI), amount of body fat, and measures of metabolic risk factors.

Results

Of the total 139 participants who underwent randomization, 118 (84.9%) completed the 12-month follow-up visit. The mean weight loss from baseline at 12 months was -8.0 kg (95% confidence interval [CI], -9.6 to -6.4) in the time-restriction group and -6.3 kg (95% CI, -7.8 to -4.7) in the daily-calorie-restriction group. Changes in weight were not significantly different in the two groups at the 12-month assessment (net difference, -1.8 kg; 95% CI, -4.0 to 0.4; P = 0.11). Results of analyses of waist circumferences, BMI, body fat, body lean mass, blood pressure, and metabolic risk factors were consistent with the results of the primary outcome. In addition, there were no substantial differences between the groups in the numbers of adverse events.

Conclusions

Among patients with obesity, a regimen of time-restricted eating was not more beneficial with regard to reduction in body weight, body fat, or metabolic risk factors than daily calorie restriction. (Funded by the National Key Research and Development Project [No. 2018YFA0800404] and others; ClinicalTrials.gov number, NCT03745612.).

Abstract via Europe PMC. Copyright remains with the authors or publisher.

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