Heart Disease

Frontline Cancer: Exercise can lower your cancer risk


We all know physical activity is important to health. For decades, it has been strongly linked to lowered risk of heart disease (the nation's leading cause of death at 614,000 deaths annually), but the full benefits of sufficient exercise are much broader and more profound. Nowhere is this more evident than in cancer, the nation's second leading cause of death — 592,000 deaths nationally each year — but projected to eventually rise to No. 1. In some states, it already has, including California and, more specifically, San Diego County.

Although much remains to be learned, physical activity is believed to lower cancer risk by, among...