The 1980 fight between Sugar Ray Leonard and Roberto Duran held in the Louisiana Superdome found Duran a beaten man. In the closing seconds of the eighth round, Duran turned his back to Leonard and quit, saying to referee Octavio Meyran...

Healthcare providers have learned that psychosis can be caused by either genetics or environmental triggers. A recent study suggests that smoking marijuana may be one of those environmental factors causing the onset of psychotic symptoms.

Previous research argued that patients with bipolar disorder, or manic-depressive disorder, are more likely to be violent. Is this increased violence due to the bipolar disorder alone, or caused by other aspects of the individual's behavior?

The number of stroke patients with a history of street drug use has risen more than nine fold in the past 13 years, according to a new study from the University of Cincinnati.

Psychotic illnesses may develop earlier in those who smoke marijuana compared to those who do not smoke the plant.

Researchers have found that drug-abusers have trouble identifying negative emotions in the facial expressions of others.

The illegal use of HGH (human growth hormone) by male weightlifters is a prevalent issue in the United States, according to a study that appears in the American Journal on Addictions .

A new study suggests veterans with any psychiatric illness face an increased risk of suicide and those with bipolar disorder are at an even greater risk.

Anti-cocaine vaccine works wonders in mice by developing a cocaine "immunity" and preventing the drug from having any effect on the brain.

A study finds that by the age of 16, bad habits and lifestyles are at the "point of no return," especially among women.