Inherited High Cholesterol (Familial Hypercholesterolaemia): When Diet Alone Is Not Enough

What Is Familial Hypercholesterolaemia — And Why Should You Know About It?

Most people have heard that eating too much oily food raises cholesterol. But what if your cholesterol is dangerously high even though you eat carefully, exercise regularly, and lead a healthy lifestyle? This is exactly what happens with familial hypercholesterolaemia (FH) — an inherited condition where the body cannot remove LDL ("bad") cholesterol from the blood efficiently.

FH is not rare. Globally, it affects roughly 1 in 250 people, which means India — with its population of 1.4 billion — likely has millions of individuals living with this condition, many of them undiagnosed. In cities like Rajkot and across Gujarat, cardiologists are seeing more patients who are surprised to discover that their very high cholesterol readings are genetic, not simply lifestyle-related.

Understanding FH is important because untreated, it dramatically raises the risk of early heart attacks and strokes — sometimes in people as young as their 30s or 40s. The good news is that with the right diagnosis and modern familial hypercholesterolaemia treatment options now available in India, this condition is very manageable.

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How Is FH Different From Ordinary High Cholesterol?

In a healthy body, the liver uses special receptors (LDL receptors) to pull LDL cholesterol out of the bloodstream and process it. In people with FH, a gene mutation reduces the number or function of these receptors. As a result, LDL cholesterol builds up in the blood — from birth.

This is why FH is fundamentally different from lifestyle-related high cholesterol:

• It starts at birth, not after years of poor diet
• LDL levels are much higher — often 190 mg/dL or above, sometimes exceeding 300–400 mg/dL in severe cases
• Diet changes alone cannot bring it to a safe level, because the problem lies in the body's processing machinery, not in how much cholesterol you consume
• It runs in families — if one parent carries the gene, each child has a 50% chance of inheriting it

There are two forms: heterozygous FH (one faulty gene copy, more common) and homozygous FH (two faulty gene copies, rarer and more severe). Illustratively, a 42-year-old in otherwise good health might be referred to a cardiologist after a routine blood test reveals an LDL of 230 mg/dL — only to discover that their father and grandfather both had early heart attacks. This pattern is a classic FH story.

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Recognising the Signs: When Should You Suspect FH?

FH often has no obvious symptoms until a cardiovascular event occurs — which is why it is called a "silent" condition. However, there are some physical and family history clues that should prompt a visit to a cardiologist:

• Very high LDL cholesterol (above 190 mg/dL in adults, above 160 mg/dL in children)
• Family history of early heart disease — a heart attack or coronary artery disease in a first-degree relative (parent, sibling) before age 55 (men) or 60 (women)
• Xanthomas — yellowish, waxy cholesterol deposits under the skin, especially around tendons (Achilles tendon, back of hands)
• Xanthelasmas — similar deposits around the eyelids
• Corneal arcus — a greyish-white ring around the iris of the eye, particularly in younger people

If you or a close family member have any of these signs, a cardiologist can use standardised scoring tools (such as the Dutch Lipid Clinic Network score) to assess the likelihood of FH and guide further testing.

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Why Diet and Exercise, Though Important, Are Not Enough

This is perhaps the most important point for patients and families to understand. Eating a heart-healthy diet — low in saturated fats, rich in vegetables, whole grains, and lean proteins — is genuinely valuable. Regular physical activity also helps improve overall cardiovascular health. However, in FH, dietary changes typically reduce LDL by only 10–20%.

When your LDL starts at 250 mg/dL, a 20% reduction still leaves it at 200 mg/dL — well above the safe target of below 100 mg/dL (or even lower for those with existing heart disease). No amount of salad or jogging can compensate for a genetic defect in cholesterol processing. Expecting diet alone to solve FH is like trying to empty a flooded room with a teaspoon while the tap is still running — helpful, but not sufficient on its own.

This is why medical treatment is a cornerstone of FH management, not an optional extra.

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Familial Hypercholesterolaemia Treatment Options in India

The landscape of FH treatment has evolved considerably, and patients across India — including those in Rajkot and Gujarat — now have access to a range of effective therapies. Treatment is tailored to the individual's LDL level, cardiovascular risk, age, and overall health.

1. Statins — The Foundation of Treatment

Statins (such as rosuvastatin and atorvastatin) are the first-line medicines for FH. They work by reducing the liver's production of cholesterol and increasing the activity of LDL receptors. High-intensity statins can lower LDL by 40–60%. They are widely available across India, affordable, and have a well-established safety record spanning decades.

Most patients with FH will be on a statin for life — and that is perfectly safe. Stopping medication because "my numbers look normal now" is a common mistake; the numbers look normal because of the medication.

2. Ezetimibe — A Useful Partner

Ezetimibe reduces the absorption of cholesterol from the gut. On its own, it has a modest effect, but combined with a statin, it can lower LDL by an additional 15–25%. It is taken once daily, is generally well tolerated, and is increasingly available at hospitals and pharmacies across India.

3. PCSK9 Inhibitors — A Breakthrough for Difficult-to-Treat Cases

For patients whose LDL remains high despite maximum statin and ezetimibe doses — or for those who cannot tolerate statins — PCSK9 inhibitors represent a significant advance. These are injectable medications (given once every 2–4 weeks) that block a protein called PCSK9, allowing the liver to remove far more LDL from the blood.

PCSK9 inhibitors (evolocumab and alirocumab) are now available in India and can reduce LDL by 50–60% on top of other therapies. They are particularly important for homozygous FH and high-risk heterozygous FH patients. Cost remains a consideration, but patient support programmes and increasing competition are improving accessibility.

4. Inclisiran — A Newer RNA-Based Option

Inclisiran is an innovative RNA-based therapy that also targets the PCSK9 pathway but only requires two injections per year after the initial doses. It is beginning to become available in India and may offer a more convenient option for eligible patients in the future.

5. LDL Apheresis — For Severe Cases

In the most severe cases of homozygous FH where medication alone is insufficient, LDL apheresis — a process that filters LDL from the blood, similar in concept to dialysis — may be recommended. This is available at select specialised centres in India.

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The Importance of Family Screening (Cascade Testing)

Because FH is inherited, diagnosing one person means their family members are at risk too. Cardiologists recommend "cascade screening" — testing first-degree relatives (parents, siblings, children) of every confirmed FH patient. Children can be tested from age 5–10, and if identified early, treatment can begin in adolescence, dramatically reducing lifetime cardiovascular risk.

In many Indian families, a conversation about cholesterol at the dinner table could literally save a life.

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Living Well With Familial Hypercholesterolaemia

A diagnosis of FH is not a life sentence — it is an opportunity to take control. Patients who are diagnosed early, treated effectively, and monitored regularly can expect to live full, active, healthy lives. Here is what a heart-healthy life with FH looks like:

• Take your prescribed medications consistently — never stop without consulting your cardiologist
• Eat a heart-healthy diet — it may not solve FH alone, but it supports your treatment
• Exercise regularly — aim for at least 30 minutes of moderate activity most days
• Avoid smoking — smoking significantly amplifies the cardiovascular risk in FH
• Monitor your numbers — regular lipid profile tests help your doctor fine-tune your treatment
• Tell your family — share your diagnosis and encourage siblings, parents, and children to get screened

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Key Takeaways

• Familial hypercholesterolaemia is a genetic condition causing very high LDL cholesterol from birth — it is not caused by lifestyle alone
• Diet and exercise are important but cannot adequately control FH on their own
• Modern familial hypercholesterolaemia treatment in India includes statins, ezetimibe, PCSK9 inhibitors, and newer therapies — giving patients real options
• Early diagnosis through family screening (cascade testing) can prevent heart attacks in younger generations
• With consistent treatment and lifestyle support, people with FH can live healthy, active lives
• If you have a family history of early heart disease or very high cholesterol, speak to a cardiologist promptly

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If you or a loved one has been told your cholesterol is very high — especially if there is a family history of early heart attacks — please do not wait and watch. A consultation with a qualified cardiologist can give you a clear picture of your risk and a personalised treatment plan. You deserve answers, and effective help is available.