Pulse Brain · Growing Health Evidence Index
Tier 2 — RCT / large cohortPeer-reviewed

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

Deying Liu; Yan Huang; Chensihan Huang; Shunyu Yang; Xueyun Wei; Peizhen Zhang; Dan Guo; Jiayang Lin; Bingyan Xu; Changwei Li; Hua He; Jiang He; Shiqun Liu; Linna Shi; Yaoming Xue; Huijie Zhang

New England Journal of Medicine · 2022

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Summary

This 12-month randomised controlled trial compared time-restricted eating (8 a.m.–4 p.m. window) combined with calorie restriction to daily calorie restriction alone in 139 patients with obesity. Time-restricted eating resulted in a mean weight loss of 8.0 kg compared to 6.3 kg with daily restriction, but this 1.8 kg difference was not statistically significant (P = 0.11), and secondary outcomes including metabolic risk factors showed no substantial differences between groups.

UK applicability

The findings suggest that time-restricted eating offers no additional metabolic or weight-loss benefit over conventional calorie restriction for patients with obesity in the UK, potentially informing clinical practice guidelines and weight management counselling. However, the study population was Chinese and may have different baseline metabolic characteristics or dietary patterns than UK populations.

Key measures

Primary outcome: change in body weight from baseline at 12 months. Secondary outcomes: waist circumference, BMI, body fat, lean mass, blood pressure, metabolic risk factors, adverse events.

Outcomes reported

The study measured changes in body weight, waist circumference, body mass index, body fat, lean mass, blood pressure, and metabolic risk factors over 12 months in patients with obesity randomised to time-restricted eating or daily calorie restriction.

Theme
Nutrition & health
Subject
Dietary patterns & chronic disease
Study type
Research
Study design
RCT
Source type
Peer-reviewed study
Status
Published
Geography
China
System type
Human clinical
DOI
10.1056/nejmoa2114833
Catalogue ID
NRmotcsf9i-004

Topic tags

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