Researchers have identified a possible new risk factor for diabetes: not getting a good night's sleep.

For three nights, researchers prevented volunteers from getting the deepest and most restorative type of sleep.

Afterward, volunteers' bodies did not use insulin as well as before: they needed more insulin to dispose of the same amount of a sugar solution.

The U. of C. study is the first to suggest that not getting the right kind of sleep also could increase diabetes risk.

Obesity and aging are two big risk factors for diabetes. Obesity and aging also reduce sleep quality