Time to get your flu vaccine. And remember: Last year's shot won't protect you this year.

Eating organic fruits and vegetables can lower exposure to pesticides, including for children but the amount measured from conventionally grown produce was within safety limits, the researchers reported Monday.

More high school students are using condoms than 20 years ago but progress has stalled with a lot of work still needed to protect young people from the AIDS virus, government researchers reported Tuesday.

Getting older doesn't just mean a risk for physical ailments like heart disease and bum knees: A new report finds as many as 1 in 5 seniors has a mental health or substance abuse problem.

Body mass index signals if you're overweight, obese or just right considering your height. Some doctors have begun calling it a vital sign, as crucial to monitor as blood pressure.

Doctors increasingly are ditching the prescription pad: More than a third of the nation's prescriptions now are electronic, according to the latest count.

Fighting obesity will require changes everywhere Americans live, work, play and learn, says a major new report that outlines dozens of options from building more walkable neighborhoods to zoning limits on fast-food restaurants to selling healthier snacks in sports arenas.

More bad news about Americans' waistlines: They're only going to get bigger.