They were mystery diseases that had stumped doctors for years — adults with strange symptoms and children with neurological problems, mental slowness or muscles too weak to let them stand. Now...

The potential use of propofol in a Missouri execution next month is raising concerns that the anti-death penalty European Union could limit its export, endangering the supply of the vital anesthetic...

It happens too often: A doctor isn't sure what is causing someone's feverish illness but prescribes antibiotics just in case, drugs that do not work if a virus is the real...

TV ads tout testosterone treatments for "low T," but surprising new research shows a different hormone may play a role in less sex drive and more fat as men age. Estrogen — the female...

The more Cindy Karlsen learned about her husband, Karl, the more suspicious she became.   There was the $700,000 (€527,000) life insurance payout he received after the 2008 death of his...

Paul Hyland almost never forgets a face. He's a "super recognizer," and that's giving an unusual kind of help to his employer: Scotland Yard.   Several years ago, for...

Electronic cigarettes worked just as well as nicotine patches to help smokers quit, according to the first study to compare them.   E-cigarettes are battery-operated products that look like...

A biotech drug from Roche moved one step closer Thursday to becoming the first medicine approved to treat breast cancer before surgery.   The U.S. Food and Drug Administration's panel of...

Health officials say 2013 already is one of the worst years for measles in the U.S. in more than 15 years.   Before a vaccine became available about 50 years ago, nearly all children got...

U.S. government regulators for the first time have approved Botox injections to treat crow's feet.   The Food and Drug Administration said Wednesday that Allergan's Botox...