Atherosclerosis

Atherosclerosis is a chronic inflammatory disease characterized by the accumulation of plaques—composed of cholesterol, fat, calcium, and other substances—within the inner lining of arteries, leading to thickening and hardening of the arterial walls. This progressive buildup narrows the arterial lumen, reducing blood flow and potentially causing partial or complete occlusion, which can result in serious complications such as coronary artery disease, stroke, peripheral artery disease, renal artery stenosis, and mesenteric artery ischemia. The condition often begins in childhood and worsens with age, frequently associated with risk factors including high cholesterol, hypertension, smoking, and unhealthy diet. While symptoms such as chest pain, shortness of breath, and fatigue may not appear until significant plaque buildup has occurred, atherosclerosis can ultimately lead to life-threatening events like heart attack or stroke if left untreated. It is a subtype of arteriosclerosis and represents a major underlying cause of cardiovascular morbidity and mortality worldwide.
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