28 Nov '12, 8am

GET TO SLEEP: Getting less than 6 hours a night can lead to weight gain.

People who regularly get less than six hours per day of sleep may have altered hormone levels that can lead to gaining weight, according to a research review published in the Journal of the Academy of Nutrition and Dietetics . Researchers at Penn State University looked at studies that examined partial sleep deprivation and at least one bodily factor, such as levels of appetite hormones, or energy intake or expenditure. By "partial sleep deprivation" they meant studies on people reporting between four and six hours of sleep per day; less than that, the researchers decided, meant that the research subjects had a sleep-related problem different from simply not getting normal amounts of sleep. Upon reviewing the collected data, the Penn State researchers found that, in people reporting partial sleep deprivation, levels of the hormone ghrelin were higher than normal, and level...

Full article: http://www.runnersworld.com/weight-loss/sleep-deprivation...

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