Health Risks of High Cholesterol: A Comprehensive Overview

Elevated cholesterol, particularly low-density lipoprotein (LDL), drives atherosclerosis—plaque buildup in arterial walls—leading to numerous cardiovascular and systemic complications:

1. Atherosclerosis: Plaque narrows arteries, restricting blood flow.
2. Coronary artery disease (CAD): Plaque in heart arteries causes angina, heart attacks, sudden cardiac death.
3. Stroke: Carotid or cerebral artery plaque leads to ischemic stroke.
4. Peripheral artery disease (PAD): Leg artery narrowing causes claudication, critical limb ischemia.
5. Carotid artery disease: Increases stroke risk.
6. Aortic aneurysm: Cholesterol contributes to aortic wall weakening and dilation.
7. Metabolic syndrome: High LDL often clusters with hypertension, obesity, insulin resistance—amplifying cardiovascular risk.
8. Immune dysfunction: Emerging evidence suggests very high cholesterol may impair immune response.

High cholesterol is often asymptomatic; screening (lipid panel) and lifestyle intervention (diet, exercise, weight management) are crucial. Statins and other lipid-lowering therapies reduce event rates significantly when indicated.