If during your sleep pattern is less or even excess of eight hours per day, could be the reason why you are suffering from diabetes later. 
Researchers at Université Laval's Faculty of Medicine found, people who sleep too much or less, with the possibility to have the type 2 diabetes or glucose tolerance deviation. 
The risk to 2.5 times higher in people who sleep less than 7-8 hours each night. The findings are published recently in the journal Sleep Medicine website. 

The researchers of the study is Jean-Philippe Chaput, Angelo Tremblay and Jean-Pierre Després of Université Laval, Claude Bouchard from the Pennington Biomedical Research Center in Baton Rouge, and Arne Astrup of the University of Copenhagen. 
They take these conclusions after analyzing the patterns of living more dri 276 participants for six years. About 20% of participants who have time to sleep too long or short tend to have diabetes or glucose tolerance deviation, compared to only about 7% of participants who have a normal bedtime. 
Even after considering the impact of various differences in the body of the index of each participant, the risk of diabetes and insulin resistance, but only the risk of diabetes have type 2 or glucose tolerance deviation higher still doubled as compared to the sleep longer or with a short bed with the normal time. 
The researchers also emphasize, the risk of diabetes is not only sleeping habits. The number of research prove the existence of a close relationship between sleep and Obesity. 
Researchers mengobservasi adults who slept between 7-8 hours each night have optimal ability to fight disease and death in the general young age. 
However, it seems the less people sleep in enough time. Surveys conducted in 1960 shows the United States to the residents around 8-8,9 hours sleep per night. Meanwhile, in 1995, the time is down to sleep up to 7 hours. 
Finally, a research, which was then conducted by the National Center for Health Statistics found in 2004, 1 / 3 of adults age 30-64 years old sleep less than 6 hours per night.