The association between sleep duration and obesity in older adults

S. R. Patel, T. Blackwell, S. Redline, S. Ancoli-Israel, J. A. Cauley, T. A. Hillier, C. E. Lewis, E. S. Orwoll, M. L. Stefanick, B. C. Taylor, K. Yaffe, K. L. Stone

Research output: Contribution to journalArticlepeer-review

208 Scopus citations


Background: Reduced sleep has been reported to predict obesity in children and young adults. However, studies based on self-report have been unable to identify an association in older populations. In this study, the cross-sectional associations between sleep duration measured objectively and measures of weight and body composition were assessed in two cohorts of older adults. Methods: Wrist actigraphy was performed for a mean (s.d.) of 5.2 (0.9) nights in 3055 men (age: 67-96 years) participating in the Osteoporotic Fractures in Men Study (MrOS) and 4.1 (0.8) nights in 3052 women (age: 70-99 years) participating in the Study of Osteoporotic Fractures (SOF). A subgroup of 2862 men and 455 women also underwent polysomnography to measure sleep apnea severity. Results: Compared to those sleeping an average of 7-8 h per night, and after adjusting for multiple risk factors and medical conditions, a sleep duration of less than 5 h was associated with a body mass index (BMI) that was on average 2.5 kg/m2 (95% confidence interval (CI): 2.0-2.9) greater in men and 1.8 kg/m2 (95% CI: 1.1-2.4) greater in women. The odds of obesity (BMI ≥30 kg/m2) was 3.7-fold greater (95% CI: 2.7-5.0) in men and 2.3-fold greater in women (95% CI: 1.6-3.1) who slept less than 5 h. Short sleep was also associated with central body fat distribution and increased percent body fat. These associations persisted after adjusting for sleep apnea, insomnia and daytime sleepiness. Conclusions: In older men and women, actigraphy-ascertained reduced sleep durations are strongly associated with greater adiposity.

Original languageEnglish (US)
Pages (from-to)1825-1834
Number of pages10
JournalInternational Journal of Obesity
Issue number12
StatePublished - Dec 2008


  • Central obesity
  • Geriatrics
  • Insomnia
  • Sleep deprivation
  • Sleep duration
  • Sleepiness

ASJC Scopus subject areas

  • Nutrition and Dietetics
  • Medicine (miscellaneous)
  • Endocrinology, Diabetes and Metabolism


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