LDL Cholesterol
This measures the cholesterol carried by LDL particles — the primary driver of atherosclerosis and heart disease risk.
LDL (low-density lipoprotein) cholesterol is the amount of cholesterol carried by LDL particles in your blood. These particles can penetrate artery walls, get oxidised, and trigger plaque formation — the process that leads to heart attacks and strokes. It's the most commonly tested cardiovascular risk marker, though ApoB is more accurate.
Good for you if: Everyone over 20 should know their LDL. Especially important if you have family history of heart disease, are South Asian, smoke, have high blood pressure, or are overweight.
Dive deeper into the scienceWhat is this test?
LDL cholesterol measures the amount of cholesterol carried by low-density lipoprotein particles. Most standard lipid panels calculate LDL using the Friedewald equation (Total cholesterol − HDL − Triglycerides/5) rather than measuring it directly. This calculation becomes inaccurate when triglycerides are above 200 mg/dL or below 70 mg/dL.
What actually matters for heart disease isn't the cholesterol content of LDL, but the number of LDL particles — which is better captured by ApoB. Still, LDL-C is useful: it correlates well with particle number in most people and is universally available.
What your number means
| LDL-C | What it means | What to do |
|---|---|---|
| <70 mg/dL | Ideal for high-risk individuals | Target if family history, high Lp(a), or existing CVD |
| 70–100 mg/dL | Optimal — longevity target | Maintain with lifestyle; no intervention needed |
| 100–130 mg/dL | Borderline — acceptable for low-risk | Lifestyle changes; consider natural supplements; check ApoB |
| 130–160 mg/dL | Elevated | Dietary intervention; bergamot; consider statin if other risk factors |
| >160 mg/dL | High | Physician evaluation; likely needs pharmacological intervention |
The "lower is better" principle holds for LDL. Mendelian randomization studies show that lifelong low LDL (even below 50 mg/dL) is associated with dramatically lower cardiovascular risk with no apparent harm. For South Asians with higher baseline CVD risk, targeting under 100 mg/dL is prudent even without other risk factors.
How to lower it
Reduce saturated fat — coconut oil, ghee, butter, and red meat are the primary dietary drivers of elevated LDL. Replace with olive oil, nuts, and avocado. Each 1% reduction in saturated fat calories lowers LDL by ~2 mg/dL.
Increase soluble fibre — psyllium husk (isabgol) 5–10g daily, oats, beans, and lentils bind bile acids and lower LDL by 5–15%. The Indian diet already includes dal — increase the quantity.
Plant sterols/stanols — 2g daily (from fortified foods or supplements) block cholesterol absorption and lower LDL by 8–10%.
- Bergamot extract — 500mg twice daily; lowers LDL 15–25% in clinical trials, with a statin-like mechanism
- Aged garlic extract — 600–1200mg daily; modest LDL reduction with added anti-inflammatory benefits
- Red yeast rice — contains natural lovastatin; effective but needs liver monitoring like a statin
- Exercise — modest direct effect on LDL, but improves particle size (more large buoyant, fewer small dense)
- Weight loss — losing 5–10% body weight can lower LDL by 5–15%
Want to track your LDL cholesterol?
eterni connects your lab results into a trajectory — so you see trends, not just a number.
Get early accessFrequently Asked Questions
What is a good LDL cholesterol level?
Standard guidelines say below 130 mg/dL is acceptable. But from a cardiovascular and longevity perspective, below 100 mg/dL is optimal, and below 70 mg/dL is the target for anyone with risk factors. ApoB is a better marker than LDL-C — but if you only have LDL, lower is generally better.
Is LDL cholesterol really bad?
LDL particles carry cholesterol into artery walls, initiating atherosclerosis. The causal role of LDL in heart disease is supported by genetics (familial hypercholesterolemia), Mendelian randomization studies, and statin trials. Not all LDL is equally dangerous — small dense LDL is worse than large buoyant LDL — but total LDL-C still correlates with risk.
How can I lower LDL naturally?
Reduce saturated fat intake (coconut oil, butter, red meat), increase soluble fibre (psyllium, oats, beans), take bergamot extract 500mg twice daily, add plant sterols 2g daily, and consider citrus bergamot or aged garlic extract. These can lower LDL by 10–25%. For larger reductions, statins or PCSK9 inhibitors are needed.
Should I worry about LDL if my HDL is high?
Yes. High HDL does not cancel out high LDL. Mendelian randomization studies show that genetically high HDL doesn't protect against heart disease. What matters is the number of atherogenic particles (LDL and ApoB). High HDL is a positive marker, but it doesn't give you a free pass on LDL.
How it's measured
LDL-C is usually calculated using the Friedewald equation: LDL = Total Cholesterol − HDL − (Triglycerides ÷ 5). This requires fasting (9–12 hours) for accurate triglyceride measurement. Direct LDL measurement is available but less common. The Martin-Hopkins equation is more accurate when triglycerides are low or LDL-C is very low. Cost: ₹200–500 as part of a standard lipid panel.
Clinical ranges vs optimal ranges
Clinical guidelines (ACC/AHA) define "desirable" LDL as below 100 mg/dL for the general population and below 70 mg/dL for high-risk patients. However, populations with genetically low LDL (30–50 mg/dL) — like those with PCSK9 loss-of-function mutations — have dramatically lower CVD rates with no apparent health consequences. From a longevity standpoint, there's no evidence of a "too low" LDL threshold.
India-specific considerations
South Asians have 2–4× higher CVD risk compared to Europeans at the same LDL levels — partly due to higher prevalence of small dense LDL particles, elevated Lp(a), insulin resistance, and abdominal obesity. Indian vegetarian diets can still produce high LDL due to heavy use of coconut oil, ghee, and fried foods. Standard "acceptable" ranges from Western guidelines may be too generous for Indians.
Lipid panels are widely available and affordable (₹200–500) at all major Indian labs. Consider adding ApoB (₹500–800) for a more accurate risk assessment.
Connected supplements
- Bergamot extract — 500mg 2×/day; inhibits HMG-CoA reductase (like statins); 15–25% LDL reduction
- Psyllium husk (Isabgol) — 5–10g daily; binds bile acids; 5–15% LDL reduction
- Omega-3 (EPA/DHA) — primarily lowers triglycerides, mild LDL particle size improvement
- Aged garlic extract — 600–1200mg daily; modest LDL-lowering with anti-inflammatory effects
- Red yeast rice — natural lovastatin; effective but requires liver monitoring
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