Primary Hypercholesterolaemia
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Primary hypercholesterolaemia is an inherited condition that keeps LDL cholesterol persistently high regardless of diet, raising the risk of early heart disease. It's treated with statins, often combined with newer agents like bempedoic acid.
Key facts
- Primary hypercholesterolaemia is a genetically driven condition in which the liver cannot clear LDL ("bad") cholesterol from the blood efficiently.
- Unlike cholesterol raised by diet alone, this form persists regardless of lifestyle changes, and the resulting high LDL speeds up plaque build-up inside arteries.
- Statins are the usual first treatment; people who need extra LDL lowering, or who can't tolerate statins, may add bempedoic acid.
- It usually causes no symptoms until a cardiovascular event, so genetic screening of close relatives after a diagnosis is the most reliable way to catch it early.
Why genetics matter here
Most people with primary hypercholesterolaemia inherit a single faulty copy of the LDL receptor gene, a pattern known as familial hypercholesterolaemia (FH), though rarer genetic variants also cause it. Because the condition typically produces no warning symptoms until a heart attack or stroke occurs, it often goes undetected for years. Testing first-degree relatives once one family member is diagnosed is the most effective way to find it before damage builds up.
Lowering LDL over the long term
Statin therapy is the standard starting point for primary hypercholesterolaemia. Some people, particularly those with very high baseline LDL or those who can't tolerate statins well, need an additional agent to reach their target. Bempedoic acid works by blocking cholesterol synthesis at a step upstream of where statins act, making it a useful add-on or alternative. Managing the condition sits within cholesterol care and overlaps closely with broader heart and blood pressure management, since both share the same cardiovascular risk factors.
When to see a doctor
Ask about a cholesterol check if a close relative has been diagnosed with familial hypercholesterolaemia, or if you have very high LDL discovered on routine bloodwork. Because this form of high cholesterol doesn't respond to diet changes alone, ongoing medical follow-up is important to keep LDL at a safe level.
This page is educational and does not replace advice from a doctor or pharmacist who knows your health history.