Evidence is steadily accumulating that insufficient sleep increases the risk of obesity and undermines fat loss efforts. Short sleep duration is one of the most significant risk factors for obesity (
1), and several potential mechanisms have been identified, including increased hunger, increased interest in calorie-dense highly palatable food, reduced drive to exercise, and alterations in hormones that influence appetite and body fatness. Dan Pardi presented his research at AHS13 showing that sleep restriction reduces willpower to make healthy choices about food.
We also know that genetics has an outsized influence on obesity risk, accounting for about 70 percent of the variability in body fatness between people in affluent nations (
2). I have argued that "fat genes" don't directly lead to obesity, but they do determine who is susceptible to a fattening environment and who isn't (
3). I recently revisited a 2010 paper published in the journal Sleep by University of Washington researchers that supports this idea (
4).
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Published:
2013-10-09T06:49:00-07:00
Title:Sleep and Genetic Obesity Risk
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