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From JAMA's Daily News Site
September 18, 2013

From JAMA’s Daily News Site

JAMA. 2013;310(11):1111. doi:10.1001/jama.2013.277239

Catching only a few hours of sleep may pack on pounds because of late-night snacking.

In a recent study, researchers studied 225 healthy adults staying in a sleep laboratory for up to 18 consecutive days. Meals were at scheduled times, but participants could eat more food any time. Those who were in bed each night only from 4 am to 8 am gained about 2 pounds. But control participants who were in bed from 10 pm to 8 am daily gained about a quarter of a pound. The additional weight gain was due to increased daytime calorie consumption and extra late-night meals.