The New Cholesterol Code

For decades, cholesterol care was driven by one question: How high is your LDL (“bad cholesterol”)? Today, cardiologists are asking a more important one: How long have your arteries been exposed to it? The focus has shifted from a single blood test to lifetime cholesterol exposure, overall cardiovascular risk and the silent damage that builds up over decades.

Known as “cholesterol years” or cumulative LDL exposure, this concept is reshaping heart disease prevention. For India, where heart attacks are increasingly affecting people in their 30s and 40s, the shift couldn’t be more timely.

A HEART ATTACK DOESN’T BEGIN THE DAY IT HAPPENS

Heart disease develops quietly. Plaque slowly builds inside arteries over years, sometimes beginning in childhood or early adulthood, without causing a single symptom. By the time chest pain appears, or worse, a heart attack, the disease has often been progressing for decades.

According to Dr Bhupathiraju Somaraju, consultant cardiologist and mentor director, Sindhu Hospitals, modern preventive cardiology has moved beyond chasing cholesterol numbers.

“The question is no longer simply ‘What is your cholesterol?’ The more important question is ‘What is your lifetime risk of developing cardiovascular disease’?” “Someone with moderately raised LDL cholesterol over 30 years may accumulate greater artery damage than another person whose cholesterol becomes very high only briefly. The focus, therefore, is shifting from today’s report card to lifelong protection,” he says.

WHY INDIA NEEDS TO PAY ATTENTION

South Asians are genetically vulnerable to premature coronary artery disease than many Western populations.

Several factors fuel this risk:

· Diabetes and prediabetes

· Abdominal obesity

· High blood pressure

· Physical inactivity

· Smoking and tobacco

· Refined carbohydrates and ultra-processed foods

· Chronic stress

· Family history

“Combined, these factors explain why Indians often suffer heart attacks five to ten years earlier than people in many other countries,” he says.

DON’T REDUCE HEART HEALTH TO A SINGLE NUMBER

“Many people with ‘normal’ cholesterol still develop heart disease because of diabetes, smoking, hypertension, chronic inflammation, obesity or inherited conditions. Likewise, not everyone with moderately elevated LDL faces the same level of risk. Today’s cardiology focuses on the whole patient-not just the laboratory report,” says Dr Somaraju.

When are medicines needed?

· Previous heart attack or stroke

· Angioplasty or bypass surgery

· Familial hypercholesterolaemia

· Very high LDL cholesterol

· Diabetes with high cardiovascular risk

· Persistent cholesterol elevation despite lifestyle modification

HEART HEALTH SNAPSHOT

· Know your cholesterol by your 20s or early 30s.

· Don’t rely on one LDL number.

· Understand your family history.

· Control blood pressure and diabetes.

· Exercise at least 150 minutes a week.

· Quit tobacco completely.

· Prioritise quality sleep and stress management.

· Eat more whole foods and fewer ultra-processed foods.

· Discuss Lipoprotein(a) testing if heart disease runs in your family.

FAST FACTS

· 5-10 years earlier: South Asians develop coronary artery disease earlier than many Western populations.

· 30s & 40s: Heart attacks are increasingly affecting younger Indians.

· 2 Injections a Year: Inclisiran, a newer cholesterol-lowering therapy, can be administered just twice yearly in eligible patients.

· One Silent Disease: Atherosclerosis often progresses silently for decades before symptoms appear.

A healthy diet, regular exercise, weight control, no tobacco and stress management remain the first line of defence, but medicines matter too. For people with heart disease, diabetes, inherited cholesterol disorders or persistently high LDL, statins remain the gold standard. Newer therapies like PCSK9 inhibitors offer additional protection for high-risk patients.”

EARLY ACTION, BIGGER PROTECTION

The biggest shift in cholesterol management is moving from reactive treatment to proactive prevention, says Dr Rahul Chowdhary, consultant cardiologist, Apollo Hospitals. For years, treatment decisions centred on a single LDL reading. Today, cardiologists recognise that even moderately raised LDL cholesterol, when present over many years, silently damages artery walls.

Who should get tested early?

Dr Chowdhary recommends cholesterol screening well before middle age, particularly for people with:

· Diabetes or prediabetes

· High blood pressure

· Obesity

· Smoking habits

· Family history of premature heart disease

· Sedentary lifestyle

Think Early, Not 50

One of the biggest myths is that cholesterol becomes a concern only after 50. In fact, Dr Devi Shetty, backed by the Cardiology Society of India, recommends a baseline cholesterol test at 17 to detect risk early and promote healthier lifestyle choices.

His recommendations:

· Age 17: Baseline cholesterol test.

· Men 35–40: CT heart scan with routine blood tests.

· Family history of heart disease: Start screening at 30.

· Diabetics: Get screened even earlier.

· Extreme sports enthusiasts (17–18): Get a heart check-up before intensive training.

YOUR LDL NOS DOESN’T TELL THE WHOLE STORY

Two people may have identical cholesterol reports but completely different heart risks,” says Dr K. Saketh, Senior Interventional Cardiologist, Medicover Hospitals. “Cholesterol should never be viewed in isolation—it must be assessed alongside diabetes, blood pressure, smoking, obesity, family history and existing heart disease.

A mildly elevated LDL may be acceptable for one individual but require medication in another with multiple risk factors.”

One test many Indians should know about

· Besides the routine lipid profile, Dr Saketh recommends that selected individuals-particularly those with a strong family history of premature heart disease — should undergo Lipoprotein(a) [Lp(a)] testing at least once.

· Lp(a) is largely inherited and can significantly increase cardiovascular risk even when routine cholesterol levels appear acceptable.