More evidence that too little sleep is bad for the diet.

Researchers say teenagers who don't get a full 8 hours a night eat more fatty foods and snacks than teens who get a good night's sleep.

The link between sleep and diet was stronger in girls than boys.

Only a third of teenagers in the study slept for an average of 8 hours or more.

Researchers found that people who have a more active mind were able to hold off the disease longer, but once diagnosed, their decline was more rapid compared to people without a lot of mental activity.

There's growing concern about the weight loss drug Meridia.

A new study finds it can increase the risk of heart attack and stroke in people who have pre-existing heart disease.

Questions about Meridia's safety led regulators in Europe to pull the drug off the market in January.

A Food and Drug Administration advisory panel will review the drug later this month.