Research
Hormonal
Late bedtime was associated with general obesity (AOR, 1.20; 95% CI, 1.12-1.29) and abdominal obesity (AOR, 1.20; 95% CI, 1.12-1.28).
Encouraging earlier bedtimes may help reduce obesity risk.
StrongSupportsmedium confidence
Compared with bedtime between 8 pm and 10 pm, late bedtime was associated with general obesity (AOR, 1.20; 95% CI, 1.12-1.29) and abdominal obesity (AOR, 1.20; 95% CI, 1.12-1.28).
Why this rating
Based on the large, multinational, population-based cross-sectional study design.
Source
Timing and Length of Nocturnal Sleep and Daytime Napping and Associations With Obesity Types in High-, Middle-, and Low-Income Countries
Lap Ah Tse et al. · JAMA Network Open · 2021
DOI 10.1001/jamanetworkopen.2021.13775
cross-sectional · n=136652Cited 46×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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