A scary problem lurks beyond the frenzied efforts to keep people from spreading Ebola: No one knows exactly where the virus comes from or how to stop it from seeding new outbreaks.   Ebola...

The United States' top disease detective calls Ebola a "painful, dreadful, merciless virus."   The World Health Organization has declared the outbreak in West Africa an...

A large international study questions the conventional wisdom that most people should cut back on salt, suggesting that the amount most folks consume is OK for heart health — and too little may...

A U.S. government scientist kept silent about a potentially dangerous lab blunder and revealed it only after workers in another lab noticed something fishy, according to an internal...

At some point, children quit counting your fingers and just know the answer. Now scientists have put youngsters into brain scanners to find out why, and watched how the brain reorganizes itself as...

An experimental Ebola drug has been used to treat two American aid workers and a Spanish missionary priest. Could Liberian doctors be next?   The Liberian government said Monday that it will...

It's long been known that faulty BRCA genes greatly raise the risk for breast cancer. Now scientists say a more recently identified, less common gene can do the same.   Mutations in the...

As a deadly Ebola outbreak continues in West Africa, health officials are working to calm fears about how the virus spreads, while encouraging those with symptoms to get medical care....

The use of an experimental drug to treat two Americans diagnosed with Ebola is raising ethical questions about who gets first access to unproven new therapies for the deadly disease. But some health...

Club doctors will have the final say on whether a player stays on the pitch after a head injury during English Premier League matches as part of new guidelines on concussion introduced for the new...