Simran Arora

World DNA Day: Are Indians More Prone To Early Onset Of Lifestyle Diseases?

World DNA Day

India is witnessing a concerning change in health patterns. Conditions like diabetes, cardiovascular disease, and certain cancers are appearing in higher numbers and at younger ages than in previous generations. While lifestyle factors like diet, stress, and reduced physical activity play a role, there is a deeper, often overlooked driver: genetics.

Dr Ramesh Menon, Director of Personal Genomics and Genomic Medicine, MedGenome, said, "From the discovery of <span>DNA</span>'s double helix in 1953 to the completion of the Human Genome Project in 2003, today genomics, the study of our DNA, is helping us uncover these disease risks. Instead of studying DNA in isolation, scientists are using it to understand human health and disease. Why does one person develop cancer while another does not? Why are some people affected by Alzheimer’s early in life? Why do some people respond well to a drug while others experience severe side effects? Genomics is providing answers that matter."

Doctors can now identify genetic mutations linked to conditions like breast cancer, cystic fibrosis, or rare inherited disorders. In some cases, treatments are tailored to a patient’s genetic profile, a concept known as precision medicine. It is also helping reveal how inherited traits can interact with environmental factors to accelerate disease onset, helping identify risks early, enable timely screening, and tailor treatments more precisely. This <span>DNA Day</span>, we turn the spotlight on how understanding our genetics could be key to managing this early disease burden.

<h2>Why Indians Are Biologically More Vulnerable</h2>

Dr Menon said that studies suggest that Indians carry distinct genetic traits that may increase the chances of early onset of diseases. For instance, South Asians are more prone to insulin resistance and tend to develop Type 2 diabetes at a younger age compared to many Western populations. India is already home to over 100 million people living with diabetes, and that number is expected to rise sharply in the coming decades.

Another example is coronary artery disease, which tends to manifest nearly a decade earlier in Indians compared to many Western populations. Genetic variants affect cholesterol transport, inflammation, and arterial wall function, contributing to a higher risk, even among people who may seem to have healthy lifestyles. Similarly, certain cancers, such as breast and colorectal cancers, are increasingly being diagnosed earlier in Indian populations. Inherited genetic mutations linked to cell growth regulation and DNA repair, combined with environmental exposures, can increase the pace of tumour development.

What is more concerning is that a significant proportion of the population remains undiagnosed or is diagnosed at late stages, allowing diseases to progress silently.

Dr Menon explained that just a generation ago, daily life involved far more physical movement, such as walking to work, manual labour, home-cooked meals, and limited access to processed food. Today, most of our routines are reversed. Desk jobs, high screen time, food and grocery delivery at the doorstep, and screen-heavy lifestyles mean many people burn fewer calories while consuming more energy-dense, ultra-processed foods. This imbalance is a key driver behind the increased rate of conditions such as cardiometabolic disorders and cancers.

What is striking is not just the increase in cases but also the decrease in the average age of disease onset. This is especially relevant for what many experts describe as an “F1 generation exposure." Our parents may not have lived with the same levels of inactivity or dietary change. Our genes, however, remain the same. The mismatch between genetic predisposition and rapid lifestyle shifts is where the problem intensifies.

In many Indian households, conditions like diabetes or heart disease are spoken about casually. “It runs in the family” is often said and quickly brushed aside. But genetics is not just about inherited risk. It also influences how early that risk shows up. If previous generations developed these conditions in their 50s and 60s, the timeline is now becoming shorter. That shift is subtle, but it is already playing out across India.

Perhaps the most critical gap lies in how we approach prevention. Indians are known to develop certain diseases nearly 8 to 10 years earlier than many Western populations, yet screening timelines often remain unchanged. Most people still begin serious health check-ups in their 40s. By then, metabolic changes may have been progressing quietly for years. The idea that a 30-year-old could already be at risk is still not widely accepted, even though the evidence increasingly suggests otherwise.

The larger shift we need is not just in how we treat disease but in how we anticipate it. Advances in genetic testing and preventive diagnostics now make it possible to identify risk much earlier and act before conditions fully develop. However, awareness remains the missing link. Moreover, health conversations in families are still reactive, not proactive. Something as simple as knowing when a parent was diagnosed or what conditions are common in the family can offer valuable insight into one’s own risk.

Health Conditions A-Z

health

world dna day

lifestyle diseases in India

lifestyle diseases

dna day

World Malaria Day 2026: Theme, History, And Significance

Thought A Heatwave Could Save You From Malaria? Expert Begs To Differ

Health News

8 Sit-Up Variations to Strengthen Your Core and Build Stability

Benefits Of Ayurvedic Health Supplement Ashwagandha

9 Anti-Inflammatory Breakfast Options You Should Try

5 Foods You Should Avoid For PCOS, Says Gynecologist

Love Sitting With Your Legs Crossed? Here’s You Should Avoid It

6 Daily Foods That Are Secretly Increasing Your Calories

9 Brain Boosters You Should Do Everyday

Hip Exercises That Will Keep You Flexible As You Age

9 Leg Exercises Office Workers’ Should Do At Home

Benefits of Having Herbal Tea Every Morning

9 Daily Habits That Boost Your Brain Power

Lower-Body Exercises That Are Game-Changers

How Drinking Apple Cider Vinegar Helps You

Aging Myths You Should Never Believe

Superfoods That Support Your Gut Health

What Happens To Your Body When You Eat Instant Noodles Every Day?

Health Issues Premature Babies Often Face

Exercises Office Workers Should Do For Their Heart Health

Reasons Why You Should Add Raw Turmeric To Your Diet

Benefits Of Drinking Milk At Night: Why You Should Do It

Food That Provides Vitamin B12 Naturally In Your Diet

Surprising Health Benefits Of Fenugreek Seeds

9 Superfoods You Should Eat For Your Brain Health

What Does Mental Health Support Look Like At Work?

Long Stretches You Should Do To Unwind From Your Day

Colon Cancer In Young Adults: Early Symptoms You Should Know

Health Benefits Of Eating Dry Fruits Everyday

Are You At Risk For Fried Rice Syndrome?

These Tests Reveal How Well You Are Aging

Lower-Back Exercises You Should Do After A Long-Day's Work

Children’s Diet – What Kids Need To Eat For Immunity Building

Common Diabetes Myths That Could Hurt Your Health

Love Spicy Food? Here’s How It Affects Your Health

Superfood List: Veggies And Fruits You Must Have For Immunity

Foods People With IBS Should Avoid

Exercises To Improve Digestion

Easy Work Lunches You Can Make In The Morning

Hunger Vs Craving: Difference Explained In 60 seconds

These Things Can Cause Your Heart To Age Faster

High Carb Foods That Are Actually Healthy

India is witnessing a concerning change in health patterns. Conditions like diabetes, cardiovascular disease, and certain cancers are appearing in higher numbers and at younger ages than in previous generations. While lifestyle factors like diet, stress, and reduced physical activity play a role, there is a deeper, often overlooked driver: genetics.Dr Ramesh Menon, Director of Personal Genomics and Genomic Medicine, MedGenome, said, "From the discovery of DNA's double helix in 1953 to the completion of the Human Genome Project in 2003, today genomics, the study of our DNA, is helping us uncover these disease risks. Instead of studying DNA in isolation, scientists are using it to understand human health and disease. Why does one person develop cancer while another does not? Why are some people affected by Alzheimer’s early in life? Why do some people respond well to a drug while others experience severe side effects? Genomics is providing answers that matter."Doctors can now identify genetic mutations linked to conditions like breast cancer, cystic fibrosis, or rare inherited disorders. In some cases, treatments are tailored to a patient’s genetic profile, a concept known as precision medicine. It is also helping reveal how inherited traits can interact with environmental factors to accelerate disease onset, helping identify risks early, enable timely screening, and tailor treatments more precisely. This DNA Day, we turn the spotlight on how understanding our genetics could be key to managing this early disease burden.Why Indians Are Biologically More VulnerableDr Menon said that studies suggest that Indians carry distinct genetic traits that may increase the chances of early onset of diseases. For instance, South Asians are more prone to insulin resistance and tend to develop Type 2 diabetes at a younger age compared to many Western populations. India is already home to over 100 million people living with diabetes, and that number is expected to rise sharply in the coming decades.Another example is coronary artery disease, which tends to manifest nearly a decade earlier in Indians compared to many Western populations. Genetic variants affect cholesterol transport, inflammation, and arterial wall function, contributing to a higher risk, even among people who may seem to have healthy lifestyles. Similarly, certain cancers, such as breast and colorectal cancers, are increasingly being diagnosed earlier in Indian populations. Inherited genetic mutations linked to cell growth regulation and DNA repair, combined with environmental exposures, can increase the pace of tumour development.What is more concerning is that a significant proportion of the population remains undiagnosed or is diagnosed at late stages, allowing diseases to progress silently.The Sudden Lifestyle FlipDr Menon explained that just a generation ago, daily life involved far more physical movement, such as walking to work, manual labour, home-cooked meals, and limited access to processed food. Today, most of our routines are reversed. Desk jobs, high screen time, food and grocery delivery at the doorstep, and screen-heavy lifestyles mean many people burn fewer calories while consuming more energy-dense, ultra-processed foods. This imbalance is a key driver behind the increased rate of conditions such as cardiometabolic disorders and cancers.What is striking is not just the increase in cases but also the decrease in the average age of disease onset. This is especially relevant for what many experts describe as an “F1 generation exposure." Our parents may not have lived with the same levels of inactivity or dietary change. Our genes, however, remain the same. The mismatch between genetic predisposition and rapid lifestyle shifts is where the problem intensifies.Closing the GapIn many Indian households, conditions like diabetes or heart disease are spoken about casually. “It runs in the family” is often said and quickly brushed aside. But genetics is not just about inherited risk. It also influences how early that risk shows up. If previous generations developed these conditions in their 50s and 60s, the timeline is now becoming shorter. That shift is subtle, but it is already playing out across India.Perhaps the most critical gap lies in how we approach prevention. Indians are known to develop certain diseases nearly 8 to 10 years earlier than many Western populations, yet screening timelines often remain unchanged. Most people still begin serious health check-ups in their 40s. By then, metabolic changes may have been progressing quietly for years. The idea that a 30-year-old could already be at risk is still not widely accepted, even though the evidence increasingly suggests otherwise.The larger shift we need is not just in how we treat disease but in how we anticipate it. Advances in genetic testing and preventive diagnostics now make it possible to identify risk much earlier and act before conditions fully develop. However, awareness remains the missing link. Moreover, health conversations in families are still reactive, not proactive. Something as simple as knowing when a parent was diagnosed or what conditions are common in the family can offer valuable insight into one’s own risk.