Many studies have associated short sleep duration with obesity and weight gain among children and young adults. However, there are few studies on the elderly.
A new study examined the association of habitual sleep duration with obesity and weight change in those over 60. More than 3,500 people were studies over the course of two years.
Both sleeping for less than 5 hours a night and more than eight hours a night were associated with a significant increase in weight gain and obesity.
Sources:
* American Journal of Clinical Nutrition, February 2008; 87(2): 310-316.
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