New research bolsters the notion that youngsters are spending too much time on smartphones and not enough on social interactions, exercise and sleep.

Jada's team goes to great lengths to keep her safe from germs, while hoping a thymus transplant will at last help her develop an immune system.

New research buttresses the understanding that genetics plays an outsized role in determining a person's success with weight loss.

Marcia Poolman had a sore back. She never suspected lung cancer.

Today's wearable tech tracks everything from sleep patterns to calories burned. But are devices created equal?

Researchers suspect high levels of a key hormone in the blood could hint at a person's risk of developing age-related ailments, such as weakness and poor balance.

A teenage girl from Honduras travels far from home for a highly specialized ablation procedure.

Research suggests moderate, regular fitness activity—cycling outdoors, especially—could help keep your mind and body young, lowering the risk of early death.

Study suggests there's no evidence to support the notion that high blood sugar can be prevented simply by not eating two hours prior to bedtime.

In an increasingly gluten-sensitive, carb-conscious world, bread is getting a tough rap—and it's not often warranted.

New research indicates a frail brain could be more susceptible to neurological problems such as dementia, as the patient is less able to cope.

As Sid Sybenga lay in critical condition following a cardiac arrest, an innovative lung treatment gave his family hope for his recovery.