Health Tip: Beginning Yoga

Make sure it's safe

Health Tip: Six Dangerous Driving Habits

Things teens should avoid

'Laughing Gas' May Not Ease Pain During Childbirth: Study

Nitrous oxide gaining interest among expectant mothers in the United States, researchers report

Many Take Opioids Reluctantly for Back Pain: Survey

Patients worried about the potentially addictive painkillers; say they only provide limited relief

Many Teens Light Up to Lose Weight, Study Suggests

Researchers offer new ways to discourage smoking among adolescents

Old Blood as Good as New for Transfusions, Study Finds

Little difference seen in patient survival rates

Polio Nearly Vanquished: CDC

But small pockets of world still have cases of crippling disease, officials add

Pregnancy May Boost Stroke Risk in Younger Women: Study

But absolute risk is very small; researchers not sure of reasons why

Review Says Calcium Supplements Won't Harm the Heart

Other physicians urge caution, however, and say these findings aren't conclusive

Smoking Still Takes Big Toll in U.S. Cancer Deaths

Habit is linked to close to one-third of fatal cancers in people 35 and older, study finds