Study links increased risk of diabetes in black women to working night shifts

Shift work," the authors of the study wrote, "is associated with disrupted circadian rhythms and reduced total duration of sleep. Similar to the effects of jet lag, which are short term, shift workers experience fatigue, sleepiness during scheduled awake periods, and poor sleep during scheduled sleep periods. These alterations in the normal sleep-wake cycle have profound effects on metabolism... http://www.jsonline.com/blogs/news/288274071.html