WASHINGTON (Reuters) - Clearer U.S. guidelines on how to treat elderly heart attack patients appear to have saved lives, with a marked reduction in heart attack deaths over 10 years, researchers reported Tuesday.

WASHINGTON (Reuters) - Adverse events like fainting or nausea remain rare among young women and girls given Merck and Co’s Gardasil vaccine against cervical cancer, U.S. researchers reported on Tuesday.

GENEVA (Reuters) - The World Health Organization said on Tuesday it was up to national regulatory authorities to decide whether to extend the shelf life of the flu drug Tamiflu by two years, as recommended by Swiss drug maker Roche.

WASHINGTON (Reuters) - Severe sleep apnea raises the risk of dying early by 46 percent, U.S. researchers reported Monday, but said people with milder sleep-breathing problems do not share that risk.

WASHINGTON (Reuters) - Liberal Democrats warned President Barack Obama on Monday that a retreat on support for a government-run health insurance plan could endanger passage of major healthcare reform in Congress this year.

NEW YORK (Reuters Health) - Older people poorly understand most of the important warning signs of stroke and factors that increase risk for this medical emergency, researchers from Dublin, Ireland, have found.

PHILADELPHIA (Reuters) - Buddhist monks and Catholic nuns boost their brain power through meditation and prayer, but even atheists can enjoy the mental benefits that believers derive from faith, according to a popular neuroscience author.

NEW YORK (Reuters Health) - Binge drinking is usually seen as a problem of college campuses, but many older adults may be overindulging in alcohol as well, a study published Monday suggests.

DAR ES SALAAM (Reuters) - The world must remain on its guard against H1N1 influenza, which has been mild so far but could become more serious as the northern hemisphere heads into winter, the head of the World Health Organization said on Sunday.

DAR ES SALAAM (Reuters) - The world must remain on its guard against H1N1 influenza, which has been mild so far but could become more serious as the northern hemisphere heads into winter, the head of the World Health Organization said on Sunday.