The common wisdom is that we need to get lots of calcium for healthy bones. But a new theory, based on studying deer antlers, challenges the role of calcium in bone growth.

A man's prostate has been described as a walnut-shaped gland. And as with everything else in a man's reproductive system, prostates come in all sizes. New research shows that size may matter in terms of predicting prostate cancer aggressiveness.

The Food and Drug Administration (FDA) has approved the first cystic fibrosis drug that treats an underlying cause of the disease. This drug can lead to significant lung function improvement for some cystic fibrosis patients.

Women who have had a mastectomy for their breast cancer treatment, have several options when it comes to reconstructive surgery. When they have received radiation as part of their treatment, the dynamics change somewhat.

Unfortunately many people who need a lung transplant die waiting. This might be different if transplants were given based on need and not on location.

Untreated sleep apnea has been linked to a long list of health risks. Now silent strokes - where the person doesn't know they had a stroke - can be added to that list.

About 33 percent of stroke survivors leave the hospital unsure of the cause. A new finding suggests about 20 percent of strokes with an undetermined cause may have been prompted by a heart arrhythmia episode.

Have heart failure? That may put you at an added risk of major fractures associated with osteoporosis. Increased screening and treatment appear key to catching bone loss early.

Doctors are always trying to find a competitive edge on any cancer, and finding new uses for current drugs is a common practice.