What causes spider veins?

Spider veins are usually caused by venous insufficiency; they are a symptom of veins deeper down in the leg or in the body backing up with blood. In this video, cardiothoracic surgeon David Greuner, MD, explains exactly how spider veins develop.

Necrotizing fasciitis is a dangerous infection that can start suddenly and move fast. Spot the signs and know how to respond.

Strengthen your heart with these heart-friendly workouts.

These six possible causes of hair loss may surprise you.

Here’s why keeping up on oral health is crucial to total-body wellness.

Learn why hypertension in older adults is linked with stroke and dementia.