Title |
Long sleep duration predicts a higher risk of obesity in adults: a meta-analysis of prospective cohort studies.
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Published in |
Journal of Public Health, August 2018
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DOI | 10.1093/pubmed/fdy135 |
Pubmed ID | |
Authors |
Wenjia Liu, Rui Zhang, Anran Tan, Bo Ye, Xinge Zhang, Yueqiao Wang, Yuliang Zou, Lu Ma, Guoxun Chen, Rui Li, Justin B Moore |
Abstract |
The connections between long sleep duration and obesity or weight gain warrant further examination. This meta-analysis aimed to evaluate whether long sleep duration was associated with the risk of obesity, weight gain, body mass index (BMI) change or weight change in adults. PubMed, Embase, Cochrane Library, Elsevier Science Direct, Science Online, MEDLINE and CINAHL were searched for English articles published before May 2017. A total of 16 cohort studies (n = 329 888 participants) from 8 countries were included in the analysis. Pooled relative risks (RR) or regression coefficients (β) with 95% confidence intervals (CI) were estimated. Heterogeneity and publication bias were tested, and sensitivity analysis was also performed. We found that long sleep duration was associated with higher risk of obesity (RR [95% CI] = 1.04 [1.00-1.09], P = 0.037), but had no significant associations with weight gain, BMI change or weight change. Long sleep duration increased the risk of weight gain in three situations: among men, in studies with <5 years follow-up, and when sleep duration was 9 or more hours. Long sleep duration was associated with risk of obesity in adults. More cohort studies with objective measures are needed to confirm this relationship. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 2 | 18% |
Ireland | 2 | 18% |
Philippines | 1 | 9% |
Spain | 1 | 9% |
United States | 1 | 9% |
Unknown | 4 | 36% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 4 | 36% |
Members of the public | 4 | 36% |
Science communicators (journalists, bloggers, editors) | 3 | 27% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 49 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 7 | 14% |
Student > Master | 7 | 14% |
Researcher | 5 | 10% |
Student > Ph. D. Student | 5 | 10% |
Professor > Associate Professor | 4 | 8% |
Other | 4 | 8% |
Unknown | 17 | 35% |
Readers by discipline | Count | As % |
---|---|---|
Nursing and Health Professions | 11 | 22% |
Medicine and Dentistry | 3 | 6% |
Neuroscience | 2 | 4% |
Social Sciences | 2 | 4% |
Biochemistry, Genetics and Molecular Biology | 2 | 4% |
Other | 7 | 14% |
Unknown | 22 | 45% |