A new government report is the first evidence of a national decline in childhood obesity, health officials said Tuesday.   In 18 states, there were at least slight declines in obesity for...

The U.S. battle against smoking has moved outdoors.   City parks, public beaches, college campuses and other outdoor venues are putting up signs telling smokers they can't light up....

Higher blood-sugar levels, even those well short of diabetes, seem to raise the risk of developing dementia, a major new study finds. Researchers say it suggests a novel way to try to prevent...

Combat appears to have little or no influence on suicide rates among U.S. troops and veterans, according to a military study that challenges the conventional thinking about war's effects on the...

Scientists who sparked an outcry by creating easier-to-spread versions of the bird flu for research purposes want to try such experiments again using a worrisome new strain. This time around, the U.S....

Smartphones don't make smart babies, an advocacy group declared in a complaint to the government about mobile apps that claim to help babies learn.   The Campaign for a Commercial-Free...

Quinn Cooney of Mill Creek, Wash., is excited about starting high school in September, but she's not looking forward to waking up at 5.30am to arrive on time. Classes for ninth-graders start at...

A British appeals court upheld a law against euthanasia in rejecting appeals from two severely disabled men who argued that doctors should be allowed to legally kill them.   The two men...

Another reason to eat breakfast: Skipping it may increase your chances of a heart attack.   A study of older men found those who regularly skipped breakfast had a 27 percent higher risk of a...

Many heart specialists aren't comfortable with discussing sex with their patients. But new guidance says they should, early and often, to let survivors know intimacy is often possible after a...