If you're South Asian and living in Canada — with roots in India, Pakistan, Bangladesh, or Sri Lanka — there's a piece of cardiology you deserve to hear plainly, because it rarely gets said early enough. As a group, South Asians develop coronary artery disease years earlier than the white populations Canadian risk tools were largely built around, and often while looking perfectly healthy on a bathroom scale. This isn't fatalism. It's the opposite: the risk is measurable, and much of it is modifiable — but only if you know to look for it. This article explains why the risk runs higher, why standard screening tends to under-call it, the specific numbers to know, and what to actually do.
This article is about long-term risk, not an emergency. But if you have chest pain or pressure, pain spreading to the arm or jaw, sudden shortness of breath, or signs of a stroke (face drooping, arm weakness, slurred speech), call 9-1-1 immediately. Don't wait, and don't drive yourself.
The core fact: earlier onset, lower BMI
The headline finding, repeated across decades of research, is that South Asians experience coronary artery disease roughly 5 to 10 years earlier than other populations — and at a lower body mass index. The landmark INTERHEART study, which examined heart attack risk across 52 countries, found that South Asians had their first myocardial infarction at younger ages than nearly every other group studied. A heart attack in one's 40s, which reads as strikingly premature in a white Canadian, is tragically less surprising in a South Asian man.
The part that catches people off guard is the weight piece. Much of the Canadian conversation about heart risk anchors on BMI — but BMI was calibrated on European bodies, and it systematically under-estimates cardiometabolic risk in South Asians. Someone with a BMI of 24, comfortably inside the "normal" band, can carry a genuinely high-risk metabolic profile. The phenomenon even has a name in the literature: "normal-weight obesity."
The drivers — why the risk runs higher
This isn't one gene or one habit. It's a cluster of biological and metabolic factors that stack on top of each other.
Central (visceral) adiposity — "normal-weight obesity"
South Asians tend to store fat viscerally — deep in the abdomen, around the organs — rather than subcutaneously. Visceral fat is metabolically active and inflammatory in a way that hip-and-thigh fat is not, and it drives insulin resistance directly. This is why a South Asian with a normal BMI and a slim-looking frame can still have a high-risk metabolic profile. The scale doesn't see it; the waistband does. This is why cardiologists use lower waist-circumference cut-offs for South Asians — roughly 90 cm for men and 80 cm for women, versus the higher European thresholds.
Type 2 diabetes and insulin resistance
South Asians develop type 2 diabetes at younger ages and lower body weights than the general population, and rates of insulin resistance are strikingly high. Diabetes is one of the most powerful accelerators of coronary disease there is — it roughly doubles cardiovascular risk — so a population predisposed to early diabetes is, by extension, predisposed to early heart disease. The two problems are deeply intertwined.
Lipoprotein(a) — the test almost nobody orders
Lipoprotein(a), written Lp(a), is an inherited, cholesterol-carrying particle that independently promotes both atherosclerosis and clotting. Levels are set almost entirely by your genes — diet and exercise barely move them — and they are frequently elevated in South Asian populations. Yet Lp(a) is rarely measured in routine Canadian practice, which means a major, heritable driver of premature heart disease often goes completely undetected. Because it's genetic, you only need to measure it once in your lifetime. Knowing it is elevated changes how aggressively everything else should be treated.
Atherogenic dyslipidaemia — low HDL, high triglycerides
Beyond total cholesterol, South Asians commonly show a specific unfavourable lipid pattern: low HDL ("good" cholesterol) and high triglycerides, often with a preponderance of small, dense LDL particles that are especially prone to lodging in artery walls. A standard lipid panel that only reports total and LDL cholesterol can look reassuring while this pattern quietly does damage underneath — which is exactly why ApoB, a direct count of atherogenic particles, is a better yardstick.
Why the risk is under-recognised in Canada
Canada is home to large, established South Asian communities — Surrey and the Fraser Valley in BC, and Brampton, Mississauga, and the wider GTA in Ontario, among many others. These are not small populations, and the cardiovascular pattern within them is well documented. Yet the risk is routinely under-called, for a few connected reasons.
First, the tools miss it. BMI-based screening under-flags South Asians, and standard cholesterol reporting can look benign while ApoB and Lp(a) tell a different story. Second, the tests that would catch it — Lp(a), ApoB — aren't part of routine panels, so they're simply never run unless a patient or an alert clinician asks. Third, risk calculators derived from European cohorts can under-estimate a South Asian patient's true 10-year risk, which in turn means preventive treatment gets started later than it should. The net effect is a population that is higher-risk being screened with tools that assume it's average.
At your next appointment, ask directly: "Given my South Asian background, can we check my lipoprotein(a) once, and add an ApoB to my lipid panel?" These two tests — one genetic and lifelong, one a sharper measure of your cholesterol risk — reveal far more than BMI and standard LDL alone, and most people have never had either done.
What to do — know your numbers, act earlier
The encouraging half of this story is how much is actionable. The risk is real, but it is also unusually measurable, and most of its drivers respond to earlier, more deliberate management.
1. Know your numbers
Ask your GP to establish this baseline. Each line earns its place:
- Lipoprotein(a) — Lp(a): once in your lifetime. Genetic, rarely tested, and a major hidden driver.
- ApoB: a direct count of atherogenic particles — more accurate than LDL alone for South Asians.
- Fasting lipids: total, LDL, HDL, and triglycerides, to reveal the low-HDL/high-triglyceride pattern.
- HbA1c: screens for prediabetes and diabetes, which so often travel alongside heart risk.
- Blood pressure: ideally measured properly and more than once.
- Waist circumference: using South Asian cut-offs (~90 cm men, ~80 cm women), not BMI alone.
2. Treat the risk factors earlier and more aggressively
Because the disease starts younger, the prevention clock should start earlier too. That often means beginning risk-factor screening and treatment in your 30s and 40s rather than waiting for a milestone birthday, and treating blood pressure, cholesterol, and blood sugar to firmer targets than a "borderline" reading might suggest. Waist-focused weight management, regular physical activity, cutting refined carbohydrates, and not smoking all pull directly on the specific drivers above.
3. Take family history seriously
A parent or sibling who had a heart attack or stroke at a young age is not just background — it's an independent risk factor in its own right, and a strong hint that inherited factors like Lp(a) may be in play for you too. Map your family's cardiac history and tell your doctor. It should raise the intensity of everything else.
A note on the wait — and getting specialist eyes sooner
Here's the practical friction. Even once you decide to take this seriously, actually getting in front of a cardiologist in Canada takes time — waits of many months after referral are the norm across the country. We've written up the specifics for cardiologist wait times in BC and cardiologist wait times in Ontario, and if a rhythm problem is part of your picture, our guide to being newly diagnosed with atrial fibrillation in Canada may help. The through-line in all of them: the referral is the easy part, and the wait after it is where clarity gets lost.
That gap is exactly where a written specialist opinion earns its keep — not to replace your Canadian cardiologist, but to help you understand your numbers, know which tests to insist on, and use the waiting months as preparation rather than limbo.
How Ginie Health connects you to South Asian cardiac expertise
There's a fitting symmetry here. Some of the world's deepest expertise in managing South Asian cardiac disease sits in South Asia itself. PGIMER Chandigarh and AIIMS are among the finest cardiology centres in the subcontinent, and their cardiologists have spent entire careers treating exactly this risk profile — the early-onset, lower-BMI, Lp(a)-driven pattern that Canadian medicine is still catching up to. For NRI families, these names carry real weight: they're often where relatives back home receive their own care.
Ginie Health connects Canadian patients to that expertise. You upload your lipid panel, Lp(a) and ApoB if you have them, ECG, or simply your history and concerns. Within 6 hours, for $45 CAD, you receive a written clinical opinion from a cardiologist trained at PGIMER or AIIMS — explaining what your numbers mean, how aggressively your risk should be managed given your background and family history, and exactly what to request from your GP or at your eventual Canadian cardiology appointment. If you'd rather talk it through, a live video consultation is available for $75 CAD. No referral is required for either.