Probability of Having High Cholesterol

Approximately 38% of American adults (about 94 million) have a total cholesterol level of 200 mg/dL or higher, which is considered borderline high or high. About 12% have cholesterol of 240 mg/dL or higher (high). High LDL cholesterol is a major modifiable risk factor for atherosclerotic cardiovascular disease.

Cholesterol levels are influenced by both genetic and lifestyle factors. Familial hypercholesterolemia, a genetic condition causing very high LDL cholesterol, affects about 1 in 250 people but is diagnosed in fewer than 10% of those affected. Lifestyle factors including diet (particularly saturated fat and trans fat intake), physical activity, weight, and smoking all significantly influence cholesterol levels.

Statin medications remain the cornerstone of cholesterol treatment and are among the most prescribed drugs in the world (about 40 million Americans take them). Statins reduce LDL cholesterol by 30-50% and cardiovascular events by 25-35%. Newer medications include PCSK9 inhibitors (which can reduce LDL by an additional 50-60%) and bempedoic acid. The 2018 cholesterol guidelines emphasized a more personalized approach, using 10-year cardiovascular risk calculators rather than specific LDL targets alone to guide treatment decisions.