Hardening and thickening of artery walls, reducing blood flow and increasing blood pressure.
From arterio- (artery) + sclerosis (hardening, from Greek skleros hard). Coined in 19th-century medical terminology. Describes pathological arterial changes.
Arteriosclerosis is basically your arteries rusting from the inside out—fat, cholesterol, and minerals clog the walls, making them stiff and narrow, which is why it's one of the biggest killers in the modern world.
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