Now playing: What causes a heart attack?

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What causes a heart attack?
Your heart takes blood from the small coronary arteries that wrap around your heart. If... Play Video -
What is coronary artery disease?
Coronary Artery Disease is when plaque builds up inside the arteries that wrap around your... Play Video -
What is a stroke?
When someone has a stroke, it's because their brain has suddenly stopped functioning. ... Play Video -
Getting physical activity
Many adults find themselves getting little or no exercise ... Play Video -
What is heart disease?
Heart disease includes many different conditions -- some that affect the blood flow to the... Play Video -
Am I at risk for heart disease?
People with diabetes are two to four times more likely to develop heart disease, but there are... Play Video -
Why is oatmeal heart-healthy?
Oatmeal provides nutrients and keeps you full until lunchtime -- and it can also reduce your... Play Video