The two epidemics in America which we seem to hear about the most are a lack of sleep and widespread obesity. Unfortunately, it’s not just attention-grabbing headlines: according to studies, over one third of Americans are obese, and one third don’t get enough sleep.
The closeness of these two figures may be more than coincidence. A growing body of research shows a strong association between sleep deprivation and weight gain. In a meta-analysis that encompassed 634,511 subjects, both male and female, ranging in age from 2 to 102, researchers found a consistent increased risk of obesity among those who don’t sleep enough.
So what role does sleep loss play in weight gain—and, on the flip side, can quality sleep help with weight loss?