New research boosts the "use it or lose it" theory about brainpower and staying mentally sharp. People who delay retirement have less risk of developing Alzheimer's disease or other...

In a third-floor room of a London hospital with orange and white walls draped with Tibetan prayer flags, roughly a dozen people gathered recently to perform vocal exercises and sing songs, including...

Overdose deaths in the U.S. are rising fastest among middle-aged women, and their drug of choice is usually prescription painkillers, the government reported Tuesday.   The female overdose...

The emotional pain and practical demands facing Nelson Mandela's family are universal: confronting the final days of an elderly loved one. There are no rules for how or when the end may arrive....

The National Institutes of Health plans to end most use of chimpanzees in U.S. government medical research, saying humans' closest relatives "deserve special...

Not only has America's high level of C-sections finally stopped rising, but more of the operations are taking place closer to the mother's due date, a new government report...

Doctors are reporting a major step toward an "artificial pancreas," a device that would constantly monitor blood sugar in people with diabetes and automatically supply insulin as...

In the first major global review of violence against women, a series of reports released Thursday found that about a third of women have been physically or sexually assaulted by a former or current...

The morning-after pill is finally going over-the-counter.   The Food and Drug Administration on Thursday approved unrestricted sales of Plan B One-Step, lifting all age limits on the...

A mysterious new respiratory virus that originated in the Middle East spreads easily between people and appears more deadly than SARS, doctors reported Wednesday after investigating the biggest...