Long Naps, Fatigue Tied to Diabetes
Daytime fatigue and the need to nap can be the result of many things. But now new research suggests that both may be associated with an increased risk of type 2 diabetes.
Researchers from the University of Tokyo conducted a meta-analysis of research published up to November 2014, including 10 studies involving a total of 261,365 subjects. These studies relied on self-reporting to record a person's daytime sleepiness and napping habits.
The results showed that the risk of type 2 diabetes increased by 56 percent among those who reported excessive daytime sleepiness. And, napping for longer than 60 minutes during the day also increased the risk of type 2 diabetes, although by 46 percent. But naps that were shorter than this did not affect diabetes risk.
While the link between napping and type 2 diabetes isn’t clear, the researchers noted that daytime napping could be caused by nighttime sleep disturbances, such as obstructive sleep apnea. This condition is associated with stroke, cardiovascular events, and also some of the risk factors of type 2 diabetes, such as excess weight.