According to a study just published in the journal SLEEP , increasing sleep hours could lead to reduced food intake , although the hormonal process differs between men and women.
The study looked at sleep duration, glucose dysregulation, and hormonal regulation of appetite in 27 normal-weight men and women, ages 30 to 45. The participants were studied under two conditions: short sleep (4 hours) and habitual sleep (9 hours). Short sleep increased total levels of ghrelin (the appetite hormone) in men , but not in women; and it lowered levels of GLP-1 (the satiety hormone) in women , but not in men. From the results it is deduced that sleeping less than four hours produces an increase in appetite in men, while in women it reduces the feeling of satiety. Both effects can lead to an increase in intake, although in different ways.
According to the authors, this is the largest controlled clinical investigation of the effects of reduced sleep on hormonal regulation linked to weight control.
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