Hardening and thickening of blood vessel walls, causing them to lose elasticity and become stiff and narrowed.
From Greek 'angion' (vessel) + 'sclerosis' (hardening). This is the medical term for what happens in aging blood vessels as they accumulate plaque and collagen.
Angiosclerosis is essentially your blood vessels aging—they get harder, stiffer, and less springy over time, which is why old arteries can't expand and contract as well as young ones, leading to high blood pressure.
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