cardiovascular disease

After 10 years, the government has updated its physical activity advice. The new message? Every little bit of movement helps you stay healthy and is better than sitting on your couch.

As early as your mid-40s, especially if you're sedentary, your heart muscle can show signs of aging, losing its youthful elasticity and power. But moderately strenuous exercise can change that.

New guidelines have lowered the threshold for high blood pressure to 130/80, which makes it even more important to get an accurate reading. Here's how to increase the odds of getting it right.

The blood thinner warfarin, which prevents blood clots, owes its existence to some cows who got very sick after eating spoiled hay — and to a chemist who spent years trying to figure out why.