September 2, 2014
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Stroke Risk Reduction

 Health Home >> Stroke Risk Reduction >> Why stroke risk reduction is so important 

What causes a stroke?

A stroke happens when the blood flow to the brain is interrupted, usually in one of two ways:

1. A blood clot blocks blood flow to the brain.

This is called an ischemic stroke.

The blood clot may get into the brain by:

  • forming in a brain blood vessel (thrombotic stroke)
  • forming elsewhere in the body (such as the heart), and moving through the bloodstream to the brain (embolic stroke)

OR

2. Blood vessels burst in the brain.

This is called a hemorrhagic stroke. Blood leaking into the brain and the interruption in blood flow both damage the brain.


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