Final answer:
Atherosclerosis is the leading cause of heart attack and stroke in North America. It refers to the buildup of plaque in the arteries, leading to blockages and reduced blood flow.
Step-by-step explanation:
The leading cause of heart attack and stroke in North America is Atherosclerosis. Atherosclerosis refers to the buildup of plaque in the walls of the arteries, which can lead to blockages and reduced blood flow. This condition is often caused by risk factors such as high cholesterol, high blood pressure, and smoking.
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