Is my HDL Cholesterol normal?
Free blood test checker · Standard + longevity-optimal ranges
What is a normal HDL level?
HDL (high-density lipoprotein) participates in reverse cholesterol transport — moving cholesterol from arterial walls back to the liver for excretion. Men should aim for above 40 mg/dL, women above 50 mg/dL. However, modern lipidology has complicated the "good cholesterol" narrative: what matters is HDL functionality (efflux capacity), not just HDL-C mass. Multiple CETP inhibitor drug trials that raised HDL levels failed to reduce cardiovascular events, and Mendelian randomization studies show that genetically elevated HDL does not protect against heart disease. Very high HDL (>100 mg/dL) may even be dysfunctional.
| Range | Values |
|---|---|
| Standard Reference | 40–100 mg/dL |
| Optimal | 60–100 mg/dL |
| Longevity Optimal | > 60 mg/dL |
| Low Risk | < 40 mg/dL |
What causes abnormal HDL levels?
Low HDL is caused by sedentary lifestyle, smoking, obesity (especially visceral fat), high refined carbohydrate diet, type 2 diabetes, metabolic syndrome, certain medications (beta-blockers, anabolic steroids), and genetics. Trans fats are particularly harmful to HDL levels.
When should you see a doctor?
See your doctor if HDL is below 40 mg/dL (men) or 50 mg/dL (women), especially if combined with high LDL or triglycerides. If lifestyle changes haven't improved HDL after 3-6 months, discuss further evaluation.
HDL and longevity
The clinical understanding of HDL has shifted dramatically. Once considered universally protective, HDL-C mass alone is now recognized as an incomplete picture. Mendelian randomization studies proved that genetically high HDL does not reduce cardiovascular events, and multiple pharmaceutical trials using CETP inhibitors to raise HDL-C failed to improve outcomes. What matters is HDL particle functionality — specifically cholesterol efflux capacity, the ability to remove cholesterol from arterial macrophages. Exercise remains the most reliable way to improve both HDL quantity and quality. Extremely high HDL (>100 mg/dL) warrants investigation as it may indicate dysfunctional particles or underlying inflammatory conditions.
Where to get a HDL test
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Related biomarkers
These biomarkers are often tested alongside HDL for a more complete picture.
Frequently asked questions
What is a normal HDL level?
How can I raise my HDL?
Can HDL be too high?
What is HDL efflux capacity?
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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.