EDITOR'S NOTE: Ten years and $2.5 billion in research have found no cures from alternative medicine. Yet these mostly unproven treatments are now mainstream and used by more than a third of all Americans. This is one in an occasional Associated Press series on their use and potential risks. ...more

November 1, 2009

The blood test millions of men undergo each year to screen for prostate cancer leads to so much unnecessary anxiety, surgery and complications that doctors should stop testing elderly men, a panel of experts said. ...more

August 5, 2008

An unusual virus known as chikungunya sickened at least 200 people and contributed to the death of a man in northeastern Italy this year, marking the first time the tropical virus has caused a disease outbreak in a temperate climate, researchers reported this month. ...more

December 29, 2007