Viagra, which millions of men take for erectile dysfunction, reduces the effects of hormonal stress on the heart by half, according to a new study. These findings are believed to be the first confirma...

Ischemic stroke, which results when a blood clot travels to the brain, is more likely to occur on days when the air contains a larger concentration of particulate matter. The air pollution in question...

Genetic researchers have made substantial advances in understanding the root causes of common diseases and the history of human evolution. An international consortium of more than 200 scientists has c...

Quantity may beat quality when it comes to exercise and heart health. Adults who engage in mild exercise -- such as walking briskly for 12 miles or exercising moderately for 125-200 minutes over the c...