“The key ingredient for improved sleep quality from our study was a reduction in overall body fat, and, in particular belly fat, which was true no matter the age or gender of the participants or whether the weight loss came from diet alone or diet plus exercise,” says Kerry Stewart, professor of medicine at Johns Hopkins University School of Medicine.
Depending on the cause, chronic sleep disruptions increase the risk of high blood pressure, heart attack, stroke, and irregular heartbeats. Obesity increases the risk of sleep problems.
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