Final answer:
Atherosclerosis is the buildup of fatty plaques in arterial walls that can lead to serious health problems.
Step-by-step explanation:
A buildup of fatty plaques in the arterial walls is known as atherosclerosis. Atherosclerosis occurs when fatty deposits, cholesterol, and other substances accumulate and harden within the arteries, leading to the narrowing and blockage of blood flow. This condition can increase the risk of heart attacks, strokes, and other cardiovascular diseases.
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