Depression is a serious medical condition - and the top cause of disability in American adults.

This is why stroke is a top cause of long-term disability.

Lung cancer is the top cause of cancer deaths in both men and women.

While smoking is the top cause of lung cancer, it is not the only risk factor.

The top cause of death in both age groups is accidents.

Infection is one of the top causes of attacks and requires vigorous treatment.

Automobile accidents are among the top causes of death in the United States.

Preterm birth is among the top causes of death in infants worldwide.

Here are the top causes of low back pain and tips for how to prevent it.