FRIDAY, Nov. 30 (HealthDay News) -- It was 1995, and 36-year-old Maria Davis had it all: a successful career as a music promoter and a model, two kids, and a man she loved so much she was going to move thousands of miles to be with him.

FRIDAY, Nov. 30 (HealthDay News) -- For one particular segment of the U.S. population, the news related to HIV infections has been anything but positive.

THURSDAY, Nov. 29 (HealthDay News) -- For women who love that great, self-satisfied feeling after a workout, a new study could be a disappointing surprise. Regular exercise, the study found, does not reduce the risk of an otherwise sedentary lifestyle.

(HealthDay News) -- Caffeine can provide a little "pick-me-up" if you're struggling to stay awake. But this common stimulant, found primarily in many coffees and teas, also can cause a number of unwanted side effects.

(HealthDay News) -- It's natural for a broken limb to swell just after the injury. If the limb is in a cast, this can make the cast feel snug near the injury, causing discomfort and possible pain.

FRIDAY, Nov. 30 (HealthDay News) -- Toy shopping season is here and experts urge parents and others to make sure any gifts they buy for children are safe and age-appropriate.

FRIDAY, Nov. 30 (HealthDay News) -- Children and teens with cystic fibrosis have impaired blood vessel function, which may affect their ability to exercise, a new study suggests.

FRIDAY, Nov. 30 (HealthDay News) -- What would it take to get you to regularly exercise longer than you do now?

FRIDAY, Nov. 30 (HealthDay News) -- Lung cancer surgery takes longer and is more costly if a patient is obese, a new study shows.

FRIDAY, Nov. 30 (HealthDay News) -- The sounds infants make when they cry could offer insight into the likelihood that they'll later be diagnosed with autism spectrum disorders, a tiny and preliminary study suggests.

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