Is my LDL Cholesterol normal?
Free blood test checker · Standard + longevity-optimal ranges
What is a normal LDL level?
LDL (low-density lipoprotein) carries cholesterol to your arteries. Elevated LDL is a primary driver of atherosclerotic cardiovascular disease (ASCVD). The AHA/ACC recommends below 100 mg/dL for primary prevention, but updated 2024-2025 guidelines set aggressive secondary prevention targets: below 70 mg/dL for high-risk patients and below 55 mg/dL for those with established ASCVD. Longevity physicians target below 80 mg/dL. Coronary artery calcium (CAC) scoring is increasingly used as a risk-enhancing tool to guide treatment decisions.
| Range | Values |
|---|---|
| Standard Reference | 0–100 mg/dL |
| Optimal | 0–100 mg/dL |
| Longevity Optimal | < 80 mg/dL |
| High Risk | > 160 mg/dL |
What causes abnormal LDL levels?
High LDL cholesterol is commonly caused by a diet high in saturated and trans fats, genetic conditions like familial hypercholesterolemia, obesity, lack of physical activity, smoking, and certain medications. Age and sex also play a role — LDL tends to rise with age, and women often see increases after menopause.
When should you see a doctor?
See your doctor if your LDL is above 160 mg/dL, if you have a family history of heart disease or high cholesterol, or if you have other cardiovascular risk factors like high blood pressure, diabetes, or smoking. If your LDL is between 100-160 mg/dL, discuss lifestyle changes and whether medication is appropriate.
LDL and longevity
Longevity researchers emphasize the concept of "LDL-years" — the cumulative lifetime exposure of your arteries to atherogenic LDL particles. Even moderately elevated LDL sustained over decades causes significant plaque accumulation. This is why preventive cardiologists increasingly advocate for earlier, more aggressive LDL lowering rather than waiting for a cardiovascular event. Plaque stabilization studies show that driving LDL well below 70 mg/dL can halt progression and even partially reverse existing atherosclerosis. A coronary artery calcium (CAC) score of zero at midlife is associated with very low 10-year cardiovascular event rates, but a non-zero score — even with "normal" LDL — warrants aggressive lipid management.
Where to get a LDL test
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Related biomarkers
These biomarkers are often tested alongside LDL for a more complete picture.
Frequently asked questions
What is a normal LDL cholesterol level?
What are the AHA secondary prevention LDL targets?
What causes high LDL cholesterol?
How often should I check my LDL?
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Sources: Reference ranges based on AHA/ACC, ADA, and AACE clinical guidelines. Biological variation data from Ricos/Westgard database. Longevity-optimal ranges reflect targets used by preventive and functional medicine practitioners.
Last reviewed: April 2026. This tool provides general health information and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider about your specific results.