STOCKHOLM—Daytime drowsiness and taking long naps during the day was associated with an increased prevalence of Type 2 diabetes, according to a review of past studies.
Researchers at the University of Tokyo reviewed 10 studies including a total of more than 260,000 individuals, looking for links between daytime sleepiness or napping and the risk of Type 2 diabetes.
The doctors found that those who felt very sleepy during the...