Tom Dougherty jokes that he takes "get-lost walks." To his wife, Cleo, it's a constant fear: When will his Alzheimer's get bad enough that she has to end his 4-mile daily strolls?

When Robin Webb lived in New York City, he was treated by HIV specialists and had access to counseling and nutritional programs. Now he lives in Mississippi, where few of those services exist.

Food allergies in children, including peanut allergy, have increased by nearly 20% in the last 10 years, and certain ethnic groups may be harder hit than others.

A front-page article in the November 13 New York Times downplayed the role of body fat, diet and physical activity in cancer prevention by suggesting that the scientific jury is still out. Is it?

By Vidushi Sinha - The Centers for Disease Control and Prevention says that counting related illnesses the number of deaths from the H1N1 virus is about four times earlier estimates.