LOS ANGELES (Reuters) - A Florida jury on Thursday ordered cigarette maker Philip Morris USA to pay $300 million in damages to a 61-year-old ex-smoker named Cindy Naugle who is wheelchair-bound by emphysema.

* Flu moving eastward after peaking in parts of Europe, U.S.

NEW YORK (Reuters Health) - Regular exercise may help keep teenagers'

NEW YORK (Reuters Health) - Eating fruits and vegetables, and drinking tea and red wine may offer overweight men and normal weight women some protection from colon and rectal cancers, hint study findings from the Netherlands.

* Women under 30 should get screened every 2 years

NEW YORK (Reuters Health) - Abuse of ketamine, a powerful anesthetic, is on the rise in many countries and now new research shows that repeated use of the club drug impairs memory, concentration, and psychological well-being.

WASHINGTON (Reuters) - Acid reflux, a common condition that has been highly profitable for the makers of antacid drugs, may not be caused by stomach acid at all, U.S. researchers said on Thursday.

* Doctors say more evidence is needed

WASHINGTON (Reuters) - As U.S. health officials struggle to vaccinate tens of millions of Americans against the pandemic of swine flu, some are looking regretfully at one easy way to instantly double or triple the number of doses available -- by using an immune booster called an adjuvant.

WASHINGTON (Reuters) - New electronic record systems installed in thousands of U.S. hospitals have done little to rein in skyrocketing healthcare costs, Harvard University researchers said in a study released on Friday.