Older adults who putter in the garden or around the house may be less likely to develop Alzheimer's disease than retirees who spend their time on more sedentary activities.

Researchers trying to tease out dietary reasons for stroke risk have found that Americans follow one of five distinct dietary patterns, based on age, race, and where they live.

Researchers say that looking at how fast an older patient walks and how strong the person's grip is may help doctors predict who is at risk for age-related dementia.

People who walk to work or school wearing ear buds or headphones face a greater risk for injury or death because they are less aware of their surroundings. Pedestrian injuries in the U.S. have tripled since 2004, researchers say.

As runners age, they don't lose their ability to use oxygen economically. That's the good news. Where older runners fall short is in upper-body strength and flexibility.

In an intriguing study, researchers found that people with blood type AB had a 26 percent increased risk for stroke compared with those with blood type O.

Many hair professionals say they examine their clients' head, neck, and face for early signs of skin cancer. And, more hairdressers say they want better training to help recognize which moles or spots might signal cancer.

Are Americans too clean? Proponents of the "hygiene hypothesis" argue that a societal emphasis on cleanliness has impaired the immune system's ability to respond as it was meant to. And that has left us open to other illnesses such as severe allergic reactions, gastrointestinal disorders, and autoimmune diseases.

The CDC is urging everyone to get an annual flu shot. Although this year's vaccine provides protection against the same strains as last year's, it's still wise to improve your immunity with a shot this fall, the agency says.

Computer screen, smartphone, e-reader, iPad - the number of electronic devices Americans stare at daily continues to grow. And the smaller the screen, the harder their eyes have to work.

Proper bowel cleaning before a colonoscopy makes it easier to spot precancerous polyps, and avoid costly repeat tests, says a new study.

Asthma is on the rise in the U.S., and so is the cost of treating it, according to new information from CDC.