(HealthDay News) -- If you've recently had a heart attack, coronary bypass, heart failure or heart transplant, your doctor may have recommended cardiac rehabilitation.

(HealthDay News) -- The chickenpox (varicella) vaccine can help protect many people from the virus. But it's not recommended for everyone.

TUESDAY, Dec. 11 (HealthDay News) -- Certain stroke patients might benefit from angioplasty and the placement of artery-opening stents in brain blood vessels, a new study suggests.

TUESDAY, Dec. 11 (HealthDay News) -- Studying porcupine quills could lead to the development of new medical devices, researchers say.

TUESDAY, Dec. 11 (HealthDay News) -- Elderly people who feel lonely are at increased risk for dementia, according to a new study.

TUESDAY, Dec. 11 (HealthDay News) -- Exposure to secondhand smoke -- during their mother's pregnancy or later in the home -- greatly increases children's risk of invasive meningococcal disease, according to a new evidence review.

TUESDAY, Dec. 11 (HealthDay News) -- A medication typically prescribed to control high blood pressure that's commonly referred to as a water pill may ease some of the symptoms of autism, researchers say.

TUESDAY, Dec. 11 (HealthDay News) -- A new study suggests that physically active people are likely to live several years longer than inactive people.

TUESDAY, Dec. 11 (HealthDay News) -- People who drink more than four cups of caffeinated coffee daily could significantly reduce their risk of death from certain forms of cancer, according to a new study from the American Cancer Society.

TUESDAY, Dec. 11 (HealthDay News) -- Women stand a much better chance of becoming centenarians than men do, a new U.S. Census Bureau report shows.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: