Excessive Cell Phone Use Affects Sleep in Teens

Cell phones may be a necessity, but common sense should tell us that putting a radiation-emitting device close to our brains for long periods of time isn't likely to be a good idea. A new study suggesst that excessive cell phone use affects sleep in teenagers.

Teenagers who excessively use their cell phone are more prone to disrupted sleep, restlessness, stress and fatigue, according to a research abstract that will be presented on June 9 at SLEEP 2008, the 22nd Annual Meeting of the Associated Professional Sleep Societies (APSS). Read more

Lack of Sleep May Increase Type 2 Diabetes

The incidence of type 2 diabetes is rapidly increasing among Americans. At the same time, Americans report getting much less sleep than previous generations did. University of Chicago researchers report a connection between the two.

Suppression of slow-wave sleep in healthy young adults significantly decreases their ability to regulate blood-sugar levels and increases the risk of type 2 diabetes, report researchers at the University of Chicago Medical Center.

Deep sleep, also called "slow-wave sleep," is thought to be the most restorative sleep stage, but its significance for physical well-being has not been demonstrated. This study found that after only three nights of selective slow-wave sleep suppression, young healthy subjects became less sensitive to insulin. Although they needed more insulin to dispose of the same amount of glucose, their insulin secretion did not increase to compensate for the reduced sensitivity, resulting in reduced tolerance to glucose and increased risk for type 2 diabetes. The decrease in insulin sensitivity was comparable to that caused by gaining 20 to 30 pounds. Read more