THURSDAY, March 30 (HealthDay News) -- Men who sleep five or fewer hours or more than eight hours a night have a greater risk of type 2 diabetes than other men, according to a study published in the March issue of Diabetes Care.
H. Klar Yaggi, M.D., of the Yale University School of Medicine, and colleagues studied the length of sleep in men from the Massachusetts Male Aging Study. None of the men had diabetes at enrollment, between 1987 and 1989.
The researchers found that men who slept five or six hours a night had twice the likelihood of getting diabetes. Men who slept more than eight hours a night ran more than three times the diabetes risk. Taking into account testosterone levels, age, hypertension, smoking, health, education and waist size did not substantially change the finding, the researchers found.
"Short and long sleep durations increase the risk of developing diabetes, independent of confounding factors," the authors wrote. "Sleep duration may represent a novel risk factor for diabetes."
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