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

NEW YORK (Reuters Health) - A woman's risk of developing multiple sclerosis (MS) during her lifetime is doubled if she was obese at age 18, new research shows.

Women under 30 should get screened every 2 years

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.

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 --

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.

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.

LOS ANGELES (Reuters Life!) - Moviegoers who tuck into a medium popcorn and a soft drink could be eating the equivalent of three McDonald's quarter-pounder burgers topped with a dozen scoops of butter, according to a U.S. study.

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.

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

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.

Doctors say more evidence is needed

NEW YORK (Reuters Health) - People who smoke or who have high blood pressure or diabetes in middle age are more likely to develop dementia, a new study has found.

NEW YORK (Reuters Health) - A new study has found a higher rate of birth defects among babies conceived by assisted reproduction compared to babies conceived naturally.

NEW YORK (Reuters Health) - Prior to reaching the golden years, too much body fat tends to increase the risk of dying, but extra weight may have the opposite effect for older adults, a new study hints.

NEW YORK (Reuters Health) - Hospital patients who suffer a side effect from treatment are more likely to give high ratings to their quality of care when hospital staff are up front about what went wrong, a new study suggests.

NEW YORK (Reuters Health) - Low-carb and high-carb diets work equally well for maintaining weight loss, Australian researchers report.

WASHINGTON (Reuters) - U.S. Senate Democratic leader Harry Reid released a long-awaited healthcare reform plan on Wednesday that budget analysts said would extend coverage to tens of millions of the uninsured and reduce the deficit over 10 years.

SYDNEY (Reuters Life!) - You never consume trans fats, have reduced caffeine, and rarely eat cheese. What's next to banish from the menu? Salt, if consumer trend tracker Mintel is right.

About deaths reported but no link to vaccine established