Short Sleep Duration is Inversely Associated with the Prevalence of Underweight in a Young Japanese Population
Sho Ishikawa,1 Shinya Furukawa,2 Teruki Miyake,1 Osamu Yoshida,1 Yoshimasa Murakami,1 Ayumi Kanamoto,1 Masumi Miyazaki,1 Akihito Shiomi,1 Hironobu Nakaguchi,3 Hironobu Saneto,1 Kaori Marui,1 Masahito Kokubu,1 Yuki Numata,1 Mitsuhito Koizumi,1 Aki Kato,2 Katsunori Kusumoto,2 Teru Kumagi,4 Bunzo Matsu...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Dove Medical Press
2025-06-01
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| Series: | Nature and Science of Sleep |
| Subjects: | |
| Online Access: | https://www.dovepress.com/short-sleep-duration-is-inversely-associated-with-the-prevalence-of-un-peer-reviewed-fulltext-article-NSS |
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| Summary: | Sho Ishikawa,1 Shinya Furukawa,2 Teruki Miyake,1 Osamu Yoshida,1 Yoshimasa Murakami,1 Ayumi Kanamoto,1 Masumi Miyazaki,1 Akihito Shiomi,1 Hironobu Nakaguchi,3 Hironobu Saneto,1 Kaori Marui,1 Masahito Kokubu,1 Yuki Numata,1 Mitsuhito Koizumi,1 Aki Kato,2 Katsunori Kusumoto,2 Teru Kumagi,4 Bunzo Matsuura,3 Yoichi Hiasa1 1Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Toon, Ehime, Japan; 2Health Services Center, Ehime University, Matsuyama, Ehime, Japan; 3Department of Lifestyle-related Medicine and Endocrinology, Ehime University Graduate School of Medicine, Toon, Ehime, Japan; 4Post Graduate Medical Education Center, Ehime University Hospital, Toon, Ehime, JapanCorrespondence: Shinya Furukawa, Health Services Center, Ehime University, Bunkyo, Matsuyama, Ehime, 790-8577, Japan, Tel +81-89-927-9198, Fax +81-89-927-9196, Email furukawa.shinya.mf@ehime-u.ac.jpStudy Objectives: Many studies have shown that sleep disorders including short sleep duration are associated with obesity. However, evidence regarding the association between sleep duration and underweight is limited and inconsistent. This study investigated the relationship between sleep duration and body mass index (BMI), focusing on the prevalence of underweight and obesity in a young Japanese population.Methods: We enrolled 12,496 students at Ehime University between April 2015 and May 2017. Information on sleep duration, sleep disorders, alcohol consumption, smoking, and exercise habits were collected using self-reported questionnaires. Logistic regression analysis was used to estimate crude odds ratios (ORs) and 95% confidence intervals (CIs) for the association between sleep duration and BMI, using 7–< 8 hours as the reference. Age, sex, drinking habits, smoking, exercise habits, and sleep disorders were considered confounding factors.Results: The prevalences of underweight (BMI < 18.5) and obesity (BMI ≥ 25) were 14.3% and 10.5%, respectively. Short sleep durations remained significantly positively associated with obesity (6–< 7 h: OR 1.19, 95% CI: 1.03– 1.37 and 9 h or more OR 0.74, 95% CI: 0.56– 0.97; p for trend = 0.001). Longer sleep duration remained significantly positively associated with underweight (6–< 7 h: OR 0.86, 95% CI: 0.76– 0.99; 8–< 9 h: OR 1.15, 95% CI: 1.01– 1.31; and 9 h or more: OR 1.40, 95% CI: 1.16– 1.69; p for trend = 0.001). In men but not women, sleep duration was independently inversely associated with obesity (9 hours or more OR: 0.70; 95% CI: 0.50– 0.96; p = 0.003). Positive association between sleep duration (9 hours or more) and underweight was found (men OR: 1.47; 95% CI: 1.12– 1.92; p = 0.001, and women OR: 1.37; 95% CI: 1.04– 1.79; p = 0.001).Conclusion: Sleep duration was significantly positively associated with the underweight and inversely associated with obesity in the young Japanese population.Plain Language Summary: Numerous studies have examined the relationship between sleep duration and obesity; however, few have focused on sleep duration and underweight. The prevalence of obesity in Japan is lower compared to Western countries, while the increasing rate of underweight among young individuals presents a significant public health concern. This cross-sectional study among Japanese university students demonstrates a positive association between sleep duration and underweight. Our findings suggest that sleep may play a crucial role in interventions aimed at addressing underweight.Keywords: sleep duration, body mass index, obesity, underweight |
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| ISSN: | 1179-1608 |