High blood pressure is one of the leading risk factors for stroke. The problem with blood pressure is that it pushes your heart to function a lot harder. This can affect your heart, make it go wrong or beat irregularly. In addition , increased pressure within your arteries can harden your arteries over time and contribute to the build-up of hard plaque (atherosclerosis) that can cause your arteries to narrow or close, including those that supply blood to your brain. If this is going to happen in the brain, a stroke occurs.
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