Background: Increasing incidences of type 2 diabetes make it necessary to have a better understanding of
the risk factors for its prediction. Taking a note of resilience in risk factors, dynamics of the emerging factors other
than traditional ones are showing a great interest in recent years which imprints a significant contribution in the
occurrence of diabetes. Of different factors, sleep duration was acknowledged as a most common risk factor for
Methods: Adhering to the state of information available, studies recruited between 2010- 2016 a total of seven prospective
studies including systematic review and meta-analysis were used to establish the relationship between sleep
duration and type 2 diabetes. Studies were identified from Medline and Scopus. Studies included in this review was
considered based on the different aspects such as maximum follow-up period, number of participants, including both
sexes along with similar reference criteria of sleep duration.
Results: With U-shaped association between sleep duration and the onset of diabetes, both short and long-term sleep
duration was found contributing to the development of type 2 diabetes. Additionally, studies on the sex-related difference
and pervasiveness of diabetes have also reported a profound relationship between short and long sleep hours
and risk of developing type 2 diabetes.
Conclusion: Our study supports other studies on the relationship between total sleep duration and the risk of developing
type 2 diabetes. This review emphasizes the importance of total sleep duration, sleep quality as a risk marker in
monitoring type 2 diabetes.