Sleep Problems Increase the Risk of Obesity

Sleep Problems Increase the Risk of Obesity
Inadequate sleep is an important risk factor for obesity. Several studies compared energy balance in subjects who slept normally with others deprived of sleep. The sleep-deprived groups gained weight. Sleep loss causes an increased release of the hormone ghrelin, which boosts appetite and slows metabolic rate. The resulting fatigue makes it more difficult to follow a healthy lifestyle that includes exercise. Poor sleep habits could be contributing to the obesity epidemic. (Current Opinion Clinical Nutrition Metabolic Care, 13: 601-607, 2010; Journal Physiology, 589: 235-244, 2011)

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