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Study Associates Lack Of Sleep With Over-Eating And Weight Gain

March 11, 2013: 12:00 AM EST
Earlier studies have drawn the connection between lack of sleep and weight gain. But in a new U.S. study, researchers show while that staying awake longer burns a lot of calories, the amount of food participants ate while they’re awake more than compensates for the energy expended. Those who slept less also tended to eat smaller breakfasts and then binge on after-dinner snacks. Participants who slept only five hours a night over five nights – with unlimited access to food – gained on average nearly two pounds. The findings add further credibility to the theory that overeating at night may contribute significantly to weight gain.
Rachel R. Markwald et al., "Impact of insufficient sleep on total daily energy expenditure, food intake, and weight gain", Proceedings of the National Academy of Sciences, March 11, 2013, © National Academy of Sciences
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