It has long been known that lack of sleep can have a deleterious effect on health. Generally, the focus has been on the effects to the nervous system and mental health, but more recently attention has turned to metabolic consequences. Now a study from a team at the University of Bristol in the UK and Weill Cornell Medical College in Qatar has found potentially serious consequences to the metabolic health of the sleep-deprived. Studying the reported sleep habits of 522 subjects, they found a strong correlation between a routine lack of sleep and systemic changes disposing individuals toward obesity and diabetes. The BBC has more: http://www.bbc.com/news/health-31869053