Reviewed by Dr. A M Thirugnanam, MD, MSICP, FSCAI, Ph.D. — Senior Interventional Cardiologist
Most people are shown a lipid report, told it is “more or less fine”, and sent home. Yet a substantial number of Indians who have heart attacks had lipid reports that looked acceptable. The problem is not that cholesterol testing is useless — it is that the wrong numbers are being looked at. This guide explains which values genuinely predict a heart attack, and which are largely noise.
The numbers on your report
LDL cholesterol — the one that matters most
LDL particles carry cholesterol into the artery wall. Every plaque that narrows a coronary artery begins with LDL crossing an injured arterial lining. Lowering LDL is the single most reliably beneficial thing modern cardiology does. The relationship is causal, dose-dependent and proven across dozens of trials: lower is better, and earlier is better than later.
HDL cholesterol — useful, but overrated
HDL carries cholesterol away from arteries, and low HDL does mark higher risk. But every drug developed to raise HDL has failed to reduce heart attacks. Treat a low HDL as a warning light on the dashboard, not as a target to be treated in its own right.
Triglycerides — the Indian problem
Triglycerides are fat circulating in the blood, and they rise with refined carbohydrate, sugar, alcohol and insulin resistance. This is why they are so commonly raised in Indian patients — our diets are carbohydrate-heavy. A value above 150 usually points to a metabolic problem rather than a fat problem, and it responds to reducing rice, roti, sugar and alcohol far more than to reducing ghee.
Total cholesterol — nearly useless on its own
Total cholesterol lumps the harmful and the protective together. A person with high HDL can have a high total cholesterol and low risk. Ignore this number in isolation.
The two numbers most Indians are never offered
ApoB
Every atherogenic particle carries exactly one ApoB molecule, so ApoB counts the actual number of particles capable of entering your artery wall. Two people can have identical LDL cholesterol but very different particle counts — and the one with more particles has more risk. ApoB is the more accurate measure, particularly if you have diabetes, high triglycerides or a large waist. It is inexpensive and does not require fasting.
Lipoprotein(a), or Lp(a)
Lp(a) is genetically determined, largely unaffected by diet and exercise, and raised in roughly one in five people — with a notably high prevalence in South Asians. It is a major reason for heart attacks in people whose conventional lipid profile looks unremarkable. It needs to be measured only once in a lifetime, because the value barely changes. If your father, mother or sibling had heart disease early and nobody can explain why, this is often the missing piece.
What your LDL target should be
There is no single normal value. The target depends entirely on your overall risk:
- Low risk, no other risk factors: below 116 mg/dL
- Moderate risk: below 100 mg/dL
- High risk — diabetes, marked hypertension, strong family history: below 70 mg/dL
- Very high risk — established heart disease, previous stent, bypass, heart attack or stroke: below 55 mg/dL
That last figure surprises most patients. If you have had a stent and your LDL is 90, you are not “controlled” — you are roughly forty points above target, and the risk of a second event remains meaningfully higher than it needs to be. This is one of the most common gaps we see in patients arriving for a second opinion.
What genuinely lowers LDL
- Statins lower LDL by 30–55% and reduce heart attacks and deaths. Muscle aches occur in a small minority; in blinded trials most such aches occur equally on placebo. If you have had a problem with one statin, a different statin or a lower dose usually works.
- Ezetimibe adds a further 15–20% and is often used with a statin rather than pushing the statin dose to its maximum.
- Soluble fibre — oats, barley, methi seeds, beans, psyllium husk — gives a modest but real reduction.
- Replacing saturated fat from ghee, coconut oil, butter and red meat with mustard, groundnut or rice bran oil.
- Eliminating trans fats — reused frying oil, vanaspati, commercial bakery items. These are the worst fats of all and remain common in Indian street food.
- PCSK9 inhibitors for those who cannot reach target on maximum oral therapy, or who have familial hypercholesterolaemia.
Dietary cholesterol — eggs, prawns — has far less effect on blood cholesterol than was believed for decades. For most people, an egg a day is not the problem. Refined carbohydrate and fried food usually are.
Common misunderstandings
“My cholesterol is normal, so my heart is fine.” Normal for whom? A value acceptable for a healthy thirty-year-old is not acceptable after a stent.
“I will control it with diet alone.” Diet typically lowers LDL by 10–15%. If you need a 50% reduction, diet alone will not get you there, however disciplined you are. Diet and medication are not competitors.
“Statins damage the liver.” Clinically significant liver injury is rare. Routine repeated liver testing is no longer recommended for most patients on a stable dose.
“I feel fine, so I can stop.” Cholesterol has never produced a symptom. Stopping treatment returns your risk to where it was, usually within weeks.
What to ask your doctor
- What is my LDL target, and what is my current value?
- Has my Lp(a) ever been measured? Given my family history, should it be?
- Should I be checking ApoB rather than LDL, given my triglycerides and waist?
- If I am not at target, what should we add rather than simply repeating the test?
- Should my adult children be screened, given my results?
This guide is educational and does not replace a consultation with your own doctor. Do not start, stop or change any medication based on what you read here.
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