“Cleared by Tests, Struck by Heart Attack”: Study Flags Major Gap in How India Assesses Heart Risk

NEW DELHI — A man in his early 50s walks out of his doctor’s clinic with a reassuring report: “low risk,” no red flags, and no immediate need for aggressive treatment. Weeks later, he suffers a debilitating heart attack. This scenario, once considered a statistical outlier, may actually be the norm in India.

A landmark study led by researchers at Govind Ballabh Pant (GB Pant) Hospital in Delhi suggests a staggering 80% of Indians who suffer their first heart attack were previously classified as low- or moderate-risk by standard medical calculators. The findings, released this week, send a clear warning to the medical community: the global “gold standards” for heart health may be failing one-sixth of the world’s population.

The “False Security” of Global Risk Scores

The research, spearheaded by Dr. Mohit Dayal Gupta, analyzed more than 5,000 Indian patients who were hospitalized following a first-time myocardial infarction (heart attack). Researchers performed a retrospective analysis, using the patients’ pre-attack medical data to calculate their 10-year cardiovascular risk using internationally recognized tools.

These tools—which factor in age, blood pressure, cholesterol, smoking status, and diabetes—are the bedrock of preventive cardiology. They determine who receives statins, who needs blood pressure medication, and who is “cleared” with simple lifestyle advice.

However, when applied to the Indian cohort, the results were alarming:

• Only 11% to 20% of these patients were labeled “high-risk” by standard models prior to their heart attacks.

• The vast majority—approximately 80%—fell into categories that typically do not trigger intensive medical intervention.

“Indian patients and the Indian population behave totally differently,” Dr. Gupta noted. “We have different risk factors and different patterns; hence, Western scores are often inappropriate and provide a false sense of security.”

Why Western Models Miss the Mark

The discrepancy lies in the origin of these mathematical models. Most global risk calculators, such as the Framingham Risk Score or the ASCVD (Atherosclerotic Cardiovascular Disease) Risk Estimator, were developed using longitudinal data from North American and European populations.

In India, the cardiovascular landscape shifts in three critical ways:

1. The Premature Onset

In Western nations, heart disease is often viewed as a condition of the elderly. In this study, the average age of heart attack patients was just 54 years. Alarmingly, Indian clinicians are reporting a surge of cardiac events in patients in their 30s and 40s—a demographic often dismissed as “too young” for high-risk categorization by traditional age-weighted models.

2. The “South Asian Phenotype”

Biologically, many Indians exhibit a specific metabolic profile often referred to as the South Asian Phenotype. This includes:

• Low HDL (“good” cholesterol) and high triglycerides, even when LDL (“bad” cholesterol) levels appear normal.

• Central Obesity: Individuals may have a “normal” Body Mass Index (BMI) but carry dangerous levels of visceral (abdominal) fat.

• Insulin Resistance: A higher predisposition to diabetes at lower weights compared to Caucasians.

3. Environmental and Psychosocial Stress

High rates of tobacco use (including smokeless tobacco), rising air pollution levels in metropolitan hubs like Delhi and Mumbai, and high levels of psychosocial stress further amplify risk in ways that standard Western equations are not calibrated to capture.

Expert Commentary: The Need for Local Validation

Independent experts emphasize that while global tools are useful starting points, they require “ethnic recalibration.”

Dr. Rajesh Dash, a South Asian cardiovascular prevention specialist, noted that South Asians often face a two-to-fourfold higher risk of coronary events than other groups, even after adjusting for traditional factors. “These global scores were not calibrated for the typical South Asian profile,” Dr. Dash explains. He advocates for the expanded use of newer biomarkers, such as Lipoprotein(a) and ApoB, which provide a more granular look at arterial health.

Dr. K. Srinath Reddy, President of the Public Health Foundation of India, has long championed the need for locally validated tools. He argues that CVD risk in India is distinct in its “timing, risk-factor mix, and socioeconomic context.”

Public Health Implications: A Call for Change

The systematic underestimation of risk has profound consequences for public health strategy in India:

• Under-treatment: Thousands of patients who would benefit from early statin therapy or blood pressure management are being told to “monitor and wait.”

• Delayed Screening: Current guidelines may need to shift the starting age for intensive cardiac screening from age 40 down to age 30 for South Asian populations.

• Diagnostic Gaps: Standard lipid panels may be insufficient. Experts suggest that Coronary Artery Calcium (CAC) scoring—a non-invasive CT scan—could help identify “silent” plaque in those labeled as “intermediate risk.”

Limitations of the Study

While the findings are significant, the study’s retrospective nature is a limitation. It relies on existing records rather than following a healthy group of people over decades. Furthermore, some clinicians caution against “over-medicalization.” Labeling a larger portion of the population as “high-risk” could lead to unnecessary anxiety and the side effects associated with lifelong medication if not handled with clinical nuance.

What This Means for You: Taking Proactive Steps

If you are of South Asian descent, you should not wait for a “high-risk” label to take action.

1. Look Beyond LDL: If your lab results show low HDL and high triglycerides, discuss this “atherogenic” pattern with your doctor, even if your total cholesterol is normal.

2. Know Your Family History: A first-degree relative with early heart disease (men before 55, women before 65) is one of the strongest predictors of risk.

3. Assess “Waist-to-Hip” Ratio: Since BMI can be misleading for Indians, measuring abdominal fat is often a more accurate indicator of metabolic danger.

4. Advocate for Advanced Testing: If you have multiple risk factors but a “low” calculated score, ask your cardiologist if a Lipoprotein(a) test or a Calcium Score is appropriate for you.

Ultimately, while the medical community works to refine its calculators, the most effective “risk reduction” remains rooted in lifestyle: a heart-healthy diet, 150 minutes of moderate exercise per week, and absolute tobacco cessation.

References

• Economic Times Health. “80% Indians cleared by tests are struck by heart attack.” ET HealthWorld, March 29, 2026.

Medical Disclaimer: This article is for informational purposes only and should not be considered medical advice. Always consult with qualified healthcare professionals before making any health-related decisions or changes to your treatment plan. The information presented here is based on current research and expert opinions, which may evolve as new evidence emerges.