A number of foreign studies have shown that poor sleep quality or insufficient sleep duration is associated with diabetes. An analysis from the China Chronic Disease Prospective Study (CCDPS) project site in Suzhou also found that people who had difficulty falling asleep, woke up early, and snored frequently had an increased risk of diabetes. Men who had trouble sleeping had the highest risk of diabetes at 63%, those who woke up early increased by 37%, snorers increased by 16%, and women with these sleep disorders had a 48%, 31%, and 39% increased risk, in that order. The risk of diabetes was higher among those with sleep problems, even when taking sleep aids. Women who took sleep aids had a 42 percent increased risk of diabetes, suggesting that medicated sleep aids did not reduce the risk of diabetes. The researchers noted that the association between sleep aids and diabetes was only seen in women in this study, and may be related to the lower rate of men taking sleep aids. Using a sleep duration of 8 h as a reference, men and women who slept ≤6 h had a 37% and 24% increased risk of diabetes, respectively. However, sleep duration of more than 9 h was not associated with the risk of diabetes. The study investigated 53,260 permanent residents aged 30-79 years. The prevalence of diabetes in the population was 5.3%, the proportions of those who had difficulty in falling asleep, woke up early and snored frequently were 7.2%, 10.0% and 29.5%, respectively, and 22.6% reported a sleep duration ≤6 h. The prevalence of diabetes in the population was 5.3%.