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Your bosses want you to eat your broccoli, hit the treadmill and pledge you'll never puff on a cigarette. But a new study raises doubts that workplace wellness programs save the company money. In what's being called the most rigorous look yet inside the wellness trend, independent researchers tracked the program at a major St. Louis hospital system for two years. Hospitalizations for employees and family members dropped dramatically, by 41 percent overall for six major conditions. But increased outpatient costs erased those savings.

Researchers find a majority of children with ADHD have continued symptoms, or symptoms of another psychiatric disorder, in adulthood. Childhood attention deficit hyperactivity disorder frequently persists into adulthood, bringing heightened risks of additional psychiatric issues and nearly five times the risk of suicide, according to a 20-year study that followed children diagnosed with the disorder.

Researchers say a lack of sleep affects the function of genes related to stress and cell renewal, possibly contributing to poor health. Doctors know that being chronically sleep-deprived can be hazardous to your health.

More than 20 percent of black and Hispanic teens say they have used their cellphones to send a "sext" message showing a nude or semi-nude photo or video of themselves to another person, and more than 30 percent say they have received such sext messages, according to a new study.

The biggest study yet into genetics and mental health has come up with a stunning result: The five most common mental illnesses -- autism, attention deficit disorder, bipolar disease, schizophrenia and major depression -- all have a common genetic root.

A study finds no evidence that a popular anti-nausea drug will lead to major problems.

A new study from researchers at Oxford University says the roots of the taboo on horse meat are in the spread of Christianity in Anglo-Saxon England. But the real reason may be simple economics.

On any given day in the United States, 18 percent of men and 11 percent of women drink more alcohol than federal guidelines recommend, according to a study that also found that 8 percent of men and 3 percent of women are full-fledged "heavy drinkers."

Upping the educational value of what young kids watch on television may help improve their behavior, a new study suggests.

Hip replacements are slightly more likely to fail in women than in men, according to one of the largest studies of its kind in U.S. patients. The risk of the implants failing is low, but women were 29% more likely than men to need a repeat surgery within the first three years.