Arterial Age Calculator

Arterial age is the age at which your estimated coronary heart disease (CHD) risk matches the risk associated with your coronary artery calcium (CAC) score. It is derived from the MESA (Multi-Ethnic Study of Atherosclerosis) model using the formula: Arterial Age = 39.1 + 7.25 × log(CAC score + 1). This transforms your calcium score into a more intuitive age-equivalent metric.

A CAC score, also called an Agatston score, measures the amount of calcium deposited in the walls of the coronary arteries. It is obtained through a non-invasive CT scan. A score of 0 means no detectable plaque, while higher scores indicate increasing levels of atherosclerosis. Scores above 400 are associated with significantly elevated cardiovascular risk.

Atherosclerosis — the build-up of plaque in arteries — can begin as early as childhood, but significant narrowing typically becomes detectable in middle age. Studies show detectable calcium deposits begin appearing in men around their 40s and in women around their 50s on average. Lifestyle factors like diet, smoking, and physical activity strongly influence how quickly this process progresses.

Using the MESA formula (AA = 39.1 + 7.25 × log(CS + 1)), a CAC score of 190 gives approximately: 39.1 + 7.25 × log(191) ≈ 39.1 + 7.25 × 2.281 ≈ 55.6 years. So a calcium score of 190 corresponds to an estimated arterial age of about 55–56 years.

If your arterial age is close to your actual age, your arteries are in age-appropriate condition. If your arterial age is significantly higher than your actual age, your arteries show more disease than expected for your years — a signal to discuss lifestyle changes and medical management with your doctor. If it is lower, your arteries are in better-than-average shape for your age.

Key strategies to slow or reduce arterial aging include: quitting smoking, controlling blood pressure and cholesterol with diet and/or medication, maintaining a heart-healthy diet (low in saturated fats and processed foods), regular aerobic exercise, managing diabetes if present, and reducing chronic stress. Some studies suggest that statins and lifestyle changes can even slow progression of calcification.

A CAC score is obtained through a non-invasive cardiac CT scan, typically taking only 10–15 minutes. No contrast dye is needed. It is usually recommended for adults aged 40–75 who have intermediate cardiovascular risk — ask your doctor whether it is appropriate for you. The test involves a small dose of radiation and is widely available at hospitals and imaging centers.

Arterial age converts your CAC score directly into an age equivalent based on the MESA study. The Framingham 10-year CHD risk is a percentage probability of experiencing a coronary heart disease event within 10 years, calculated from risk factors including age, gender, cholesterol, blood pressure, and smoking. Together they provide complementary views of cardiovascular risk.