Researchers on Thursday challenged a tenet of modern medicine that higher levels of "good" cholesterol automatically boost cardiovascular health.

For the first time ever, white births in the United States are no longer in the majority, according to US Census Bureau estimates Thursday that underscored the growth of the Hispanic population.

A popular antibiotic used for treating bronchitis, pneumonia, ear infections and sexually transmitted diseases may boost the risk of death, a US study said Wednesday.

For the first time, the government is proposing that all baby boomers get tested for hepatitis C.

In most developed countries, children with autism are usually sent to school where they get special education classes. But in France, they are more often sent to a psychiatrist where they get talk therapy meant for people with psychological or emotional problems.

Nearly 40,000 people dressed in colourful costumes attended this year's Life Ball, Vienna's glitzy annual AIDS charity, Saturday, with actress Milla Jovovich and former US president Bill Clinton among those adding to the star factor.

CHICAGO (Reuters) - Chicago police trying to keep the peace during the NATO summit may face their biggest test on Sunday when thousands of demonstrators were expected to march near the site where leaders of the military alliance begin a two-day meeting. Previous protests in the runup to the summit Sunday and Monday have been lively but peaceful, resulting in fewer than two dozen arrests over the past six days, according to the Chicago Police Department. ...