Heart attacks in Indians explained: 5 risks even with normal cholesterol levels

 

In India, "normal" cholesterol on a standard lipid profile can be deceptive. Research in 2025 and 2026 confirms that nearly 60% of heart attacks occur in individuals with seemingly perfect cholesterol readings. For Indians, who are genetically prone to heart disease 5–10 years earlier than Westerners, the risk often hides in factors that standard tests simply don't measure.

Here are the 5 critical risks that explain why Indians face heart attacks even with normal cholesterol levels:

1. High Lipoprotein(a) – The "Sticky" Genetic Risk

About 25% of the Indian population has elevated levels of Lipoprotein(a), or .

  • The Problem: is a genetically determined "sticky" particle that promotes both plaque buildup and blood clots.

  • Why it's hidden: It is almost never included in a standard lipid panel. Unlike LDL, levels are not significantly affected by diet or exercise, making it a "silent" threat even for the fit.


2. Smaller, Thinner Coronary Arteries

Physiologically, many Indians have smaller-diameter coronary arteries compared to other ethnicities.

  • The Problem: Because the "pipes" are narrower to begin with, even a small amount of plaque—which might be considered minor in a Western patient—can lead to a 70-90% blockage in an Indian patient.

  • The Result: This makes Indians more vulnerable to "Diffuse Atherosclerosis," where the entire length of the artery is affected rather than just one spot.

3. Low HDL (Good Cholesterol) & High Triglycerides

Indians often exhibit a "unique lipid profile" characterized by low HDL ( mg/dL) and high triglycerides.

  • The Problem: In Indians, HDL particles are often not just low in number but also "dysfunctional," meaning they fail to clear fat from the arteries.

  • The Metric: Doctors now look at the ApoB/ApoA-1 ratio or Non-HDL cholesterol rather than just LDL. A high particle count (ApoB) is a far more accurate predictor of a heart attack than the total weight of cholesterol.

4. "Thin-Fat" Phenotype (Visceral Fat)

Many Indians have a normal BMI (Body Mass Index) but carry high levels of visceral fat—fat stored around internal organs and the belly.

  • The Problem: This leads to Insulin Resistance, which causes chronic inflammation in the blood vessels. Even if your cholesterol is low, this inflammation makes your arterial walls "sticky" and prone to capturing whatever fat is in the blood to form unstable plaques.

5. High Levels of hs-CRP (Inflammation)

Inflammation is the "fuel" that turns a small blockage into a heart attack. Indians often have higher levels of High-Sensitivity C-Reactive Protein (hs-CRP).

  • The Problem: Think of cholesterol as the "logs" and inflammation as the "match." You can have very few logs (normal cholesterol), but if a match is lit (high inflammation), a fire (heart attack) can still start.

  • Triggers: Chronic stress, air pollution, and high-sugar diets are major contributors to this systemic inflammation in the Indian context.


Actionable Advice: Beyond the Lipid Profile

If you have a family history of heart disease but "normal" reports, consider asking your doctor for these Advanced 2026 Diagnostics:

  • Lp(a) Test: A once-in-a-lifetime blood test to check genetic risk.

  • ApoB Test: To count the actual number of "bad" particles.

  • hs-CRP: To measure the level of hidden inflammation in your body.

  • CAC Score (Calcium Scan): A quick CT scan that shows if there is actual physical plaque in your heart, regardless of what your blood work says.


Would you like me to find a list of specific "Heart-Healthy" foods that help lower inflammation and improve HDL quality?

Heart diseases are India's leading killer, causing over a quarter of all deaths, with ischemic heart disease and stroke dominating, affecting younger people, and showing higher prevalence in urban areas and wealthier classes. According to doctors, many people, including youngsters, suffer heart attacks despite having “normal” cholesterol levels on routine blood reports. While this paradox highlights important gaps in how cardiovascular risk is assessed and managed among the Indian population, it calls for taking your health not lightly.

Indians exhibit a distinct lipid profile.

“Indians have a unique lipid pattern. Even when total cholesterol and LDL (“bad cholesterol”) are within normal ranges, many Indians have low HDL (“good cholesterol”) and high triglycerides,” Dr. Vaibhav Dedhia, Consultant Cardiology, Jaslok Hospital and Research Centre, told Times Now.

According to Dr Dedhia, the combination - often known as atherogenic dyslipidemia- is strongly linked to heart disease but is not fully reflected in standard cholesterol numbers.

“Also, cholesterol quality matters more than quantity. Routine tests measure how much LDL cholesterol is present, not how dangerous it is,” he added. Indians are more likely to have small, dense LDL particles, which penetrate artery walls more easily and cause faster plaque buildup, even at normal LDL levels.

Insulin resistance plays an important role

Experts say insulin resistance plays an important role in your cardiovascular health, as it is very common among most Indians. Conditions like abdominal obesity, prediabetes, and type 2 diabetes promote chronic inflammation and endothelial damage, accelerating atherosclerosis without necessarily raising cholesterol levels.

High glucose levels stiffen and narrow arteries, thereby allowing plaque to build up, restricting blood flow to the heart. It also creates a chronic inflammatory state, further accelerating plaque formation and damaging vessel linings.

Lipoprotein is elevated among most Indians

Lipoprotein(a) - a genetically determined cholesterol particle, is frequently elevated in Indians. “High Lp(a) significantly increases heart attack risk but is not included in routine lipid profiles, leaving many high-risk individuals undetected,” said Dr Dedhia.

High lipoprotein(a) promotes plaque buildup, inflammation, and clotting, leading to heart attacks, strokes, and aortic stenosis, acting as a major genetic risk factor alongside diabetes, even if other cholesterol levels seem normal. Because it is genetically driven and less affected by lifestyle, high Lp(a) is a critical, often overlooked, factor in India's high burden of early heart disease.

Related video: Heart Attacks Demystified Episode 1: Triggers, Risks and How to Stay Protected (The Times of India)

Indians are prone to early heart disease

Dr Dedhia says heart disease generally begins earlier in Indians. “Plaque formation can start in the 20s and 30s, so a 'normal' report later in life may give false reassurance while silent disease is already present,” he said.

A mix of genetic predisposition and lifestyle factors, which include high-stress urban life, sedentary habits, poor diets rich in processed foods, and widespread tobacco and alcohol use, leads to heart attacks often a decade earlier than Westerners. This combination accelerates risk, making early onset of cardiac issues a major public health concern, according to the Indian Heart Association.

Non-lipid risks to be blamed

Also, non-lipid risk factors play a major role. Smoking, high blood pressure, stress, physical inactivity, poor sleep, and diets rich in refined carbohydrates all contribute to heart attacks independently of cholesterol levels.

Cholesterol cut-offs are based largely on Western populations. What is “normal” by international standards may still be unsafe for Indians, who develop heart disease at lower cholesterol thresholds.

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