Clinical trial shows that when an infected partner gets early treatment, the risk of transmitting the disease to is dramatically reduced
Condition raises stress hormones and can overwork the heart
You don't have to be in the middle of an outbreak to pass virus to sex partner
Nerves from amputated limb are attached to the remaining muscle
Two large studies of Alzheimer's patients provide important new genetic clues about who is at risk for getting the disease
New study shows that for sedentary people, a sudden burst of activity - like jogging or sex - can be deadly
Bilingual people are better able to resist the normal cognitive decline that comes with aging
Discovery could lead to prevention, early treatment for those most at risk
Social media helps doctors' offices to operate more efficiently and improves the way patients communicate with their doctors
People the world over are living longer, and now a new study shows who is likely to live the longest
There is hope that doctors will be able to catch the disease earlier, even stop its progression
Survival of Gabrielle Giffords is still fraught with danger
New test promises to detect the smallest traces of cancer cells circulating in the blood
Three new studies about cigarette smoking show it is more harmful than previously thought
Burst aorta claimed life of US diplomat Richard Holbrooke this week
New study shows one low-dose aspirin a day can significantly reduce risk of death from common forms of cancer
Researchers say it tells them how bacteria goes from being harmless to deadly
Study shows death rate declines significantly with training
Some studies are re-creating controversy over who should get mammograms and when, while others show progress in surviving breast cancer
American actor Michael Douglas has become the international face of the disease since being diagnosed
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