This conclusion was made by American scientists who believe that sleeping for 9 hours and more prevents a genetic predisposition to obesity.
The scientists from the University of Washington examined the indicators of health and lifestyle of 1088 twin pairs. The study showed that genetic factors have a direct effect on the body mass index (BMI). The matter is the newly identified genes associated with obesity. So, the twins, who slept less than 7 hours per day had their BMI two times higher than those who slept 9 hours.
The author of the study, Dr. Nathaniel Watson, believes that lack of sleep creates “comfort” for the expression of genes associated with obesity. The results of the study, which, according to the scientists, are still preliminary, were published in the Sleep journal.