Via Diabetes Care Journal.
A cohort study (made by Yaggi, Araujo and McKinlay) who enroll men from 1987-9 to 2004 showed the next results:
Men reporting short sleep duration (< =5 and 6 h of sleep per night) were twice as likely to develop diabetes, and men reporting long sleep duration (>8 h of sleep per night) were more than three times as likely to develop diabetes over the period of follow-up.
So, If you get too much or not enough sleep, you can develop Diabetes Mellitus.
Source: Diabetes Care 2006;29:657-661.
Jon Mikel IÃ±arritu, M.D.