When you have high blood pressure, blood is pumping against your artery wall with too much force. Over time, this damages your arteries. The force of blood pushing on the arteries overstretches the walls. This causes weak spots in the lining that may split open completely or tear. When an arteries tear, scar tissue forms. This makes it easier for fatty buildup called plaque to collect and narrow the arteries. Blood has trouble flowing throuh narrow arteries, putting even more pressure on artery walls. With high blood pressure, your arteries can eventually become completely blocked, cutting off all blood to your heart or brain and leading to a heart attack or stroke.
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