AP - Mary Josephine Ray, the New Hampshire woman who was certified as the oldest person living in the United States, has died at age 114 years, 294 days.

AP - The virus that causes AIDS can hide in the bone marrow, avoiding drugs and later awakening to cause illness, according to new research that could point the way toward better treatments for the disease.

AP - Months after experts discounted the importance of routine mammograms and Pap smears for many women, the American Cancer Society is warning more explicitly than ever that regular testing for prostate cancer is of questionable value too, and can do men more harm than good.

AP - House Democratic leaders are pushing to finish far-reaching health legislation and hold a climactic vote in the next three weeks, aiming to overcome reluctance from rank-and-file lawmakers. But they conceded Thursday they may not meet President Barack Obama's challenge for swift action.

AP - The American Cancer Society is urging doctors to make clearer to men that the test used to screen for prostate cancer has limits and may lead to unnecessary treatments that do more harm than good.

AP - One in four U.S. parents believes some vaccines cause autism in healthy children, but even many of those worried about vaccine risks think their children should be vaccinated.

AP - The odds of obesity appear stacked against black and Hispanic children starting even before birth, provocative new research suggests.

AP - People who complain they have no time to exercise may soon need another excuse. Some experts say intense exercise sessions could help people squeeze an entire week's workout into less than an hour. Those regimens — also called interval training — were originally developed for Olympic athletes and thought to be too strenuous for normal people.

AP - In her 88 years, Florence Siegel has learned how to relax: A glass of red wine. A crisp copy of The New York Times, if she can wrest it from her husband. Some classical music, preferably Bach. And every night like clockwork, she lifts a pipe to her lips and smokes marijuana.

AP - More than 30 years after the world greeted its first "test-tube" baby with a mixture of awe, elation and concern, researchers say they are finding only a few medical differences between these children and kids conceived in the traditional way.