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LDL is not the whole picture

A lipid profile contains more information than the one number most people read.

Total cholesterol combines values that mean opposite things, so it is a poor guide on its own. Triglycerides, the triglyceride-to-HDL ratio and non-HDL cholesterol carry more useful information, and in Indian populations a raised triglyceride with a low HDL is the more common pattern.

Why total cholesterol misleads

Total cholesterol adds HDL, LDL and a fraction of triglycerides together. Since higher HDL is generally favourable and higher LDL is not, adding them produces a number that can move for opposite reasons.

Someone with a total of 210 driven by high HDL is in a different position from someone with the same total driven by high LDL and triglycerides. The single number cannot distinguish them.

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The values that carry information

These four say more than the total does.

  • Triglycerides — strongly influenced by refined carbohydrate, sugar and alcohol, and highly responsive to diet.
  • Triglyceride to HDL ratio — divide one by the other. A high ratio is a useful marker of insulin resistance.
  • Non-HDL cholesterol — total minus HDL. It captures all the atherogenic fractions in one figure.
  • Lipoprotein(a) — largely genetic, rarely tested, and relevant in Indian populations. Worth measuring once in a lifetime, particularly with a family history of early heart disease.

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The Indian pattern

South Asian populations more commonly present with high triglycerides and low HDL than with markedly high LDL, often alongside a normal or near-normal total cholesterol.

This is the profile associated with insulin resistance, and it is the one most likely to be reassured away by a report where nothing is flagged in red.

What diet moves, and what it does not

Triglycerides respond quickly and substantially to reducing refined carbohydrate, sugar, fruit juice and alcohol. Soluble fibre from oats, barley, psyllium and pulses lowers LDL through bile acid binding. Replacing some saturated fat with unsaturated sources helps. HDL responds mainly to physical activity.

What diet does not reliably move is lipoprotein(a), and familial hypercholesterolaemia is a genetic condition that needs medical treatment, not a nutrition plan. Recognising which situation you are in is the first useful step, and it requires a doctor.

In short

Total cholesterol sums values that mean opposite things.
Triglyceride-to-HDL ratio and non-HDL cholesterol carry more information.
The common South Asian pattern is high triglycerides with low HDL, often with a normal total.

Questions we are asked

Do eggs raise cholesterol?

For most people dietary cholesterol has a modest effect on blood cholesterol. Refined carbohydrate, sugar and alcohol influence triglycerides considerably more. A minority are genuine hyper-responders, which is worth knowing about yourself.

My cholesterol is high but I am slim. How?

Lipid levels are substantially genetic. Familial hypercholesterolaemia in particular is not a lifestyle condition and needs medical treatment. Being slim does not exclude it.

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Conditions this relates to

Cholesterol Blood pressure Fatty liver Diabetes

Recipes that put this into practice

Related reading

References

  1. Lipid Association of India — expert consensus statement on management of dyslipidaemia in Indians.
  2. World Health Organization — cardiovascular disease risk assessment.
  3. [Further references to be completed by the medical review panel.]

This article is general health information, written by a clinical nutritionist and reviewed by a doctor. It is not a diagnosis and it does not replace advice from your own clinician. Never change prescribed medication on the basis of what you read here.

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