An expert panel is urging every expecting mother to get a shot preventing whooping cough, preferably in the last three months of her pregnancy to help protect her baby.

A group campaigning against obesity predicts that by 2030 more than half the people in 39 states will be obese not merely overweight, but obese.

A provocative new study suggests a connection between the BPA chemical used in food packaging and childhood obesity but the researchers say their findings don't prove it's the cause.

Cancer is now the leading killer of Hispanics in the U.S. the latest sign it's beginning to displace heart disease as the nation's top cause of death.

As the U.S. wrestles with its biggest whooping cough outbreak in decades, researchers appear to have zeroed in on the main cause: The safer vaccine that was introduced in the 1990s loses effectiveness much faster than previously thought.

Tobacco taxes and smoking bans haven't budged the U.S. smoking rate in years. Now the government is trying to shock smokers into quitting with a graphic nationwide advertising campaign.

A federal advisory panel is recommending that all Americans age 65 and older get vaccinated against whooping cough.

A new study shows more and more U.S. adults are being told by their doctor to get off their duffs and exercise.