Health officials are investigating how a surgeon at Rhode Island Hospital mistakenly operated on the wrong part of a patient's hand, the hospital's fifth wrong-site surgery since 2007.

President Barack Obama has declared the swine flu outbreak a national emergency, giving his health chief the power to let hospitals move emergency rooms offsite to speed treatment.

It's a memory-destroying disease that has baffled scientists for decades, but one researcher has a controversial theory: that we can catch it with a kiss.

What to do if menopause makes you miserable? Start with a visit to your doctor.

Millions of women have tried custom-compounded hormones or herbal supplements to treat symptoms of menopause.  But instead of a safer option, they are getting products of unknown risk.