Tuesday, March 9, 2010

Sleep and Obesity Again and Again

A study was published this month in the scientific journal Sleep on how you're at greater risk of being fat if you're sleep deprived.

According to researchers at North Carolina's Wake Forest University, if you sleep less than 5 hours, you (people under 40, that is) gained 1.8 kg or almost 4 lbs more than if you slept 6 or 7 hours.

On the other hand, sleep more than 8 hours and you gain 0.8 kg or 1.76 lbs more.

Two things I don't get:

1. Considering you burn more calories while you're awake, shouldn't you get fatter sleeping more? That is..if we're not spending that time eating/drinking Red Bulls.

2. These sorts of fat/sleep studies have been done so many times (here's one done six years ago by Columbia University in the same journal and another one five years ago in JAMA)..why is this still news?

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