Understanding Hypercholesterolaemia: Managing High Cholesterol in the UK

Hypercholesterolaemia is the clinical term for high levels of cholesterol in the blood. Cholesterol is a waxy, fat-like substance produced by the liver and found in certain foods. While your body needs some cholesterol to build healthy cells, produce hormones, and synthesise Vitamin D, an excess can lead to significant health problems. In the UK, high cholesterol is a major risk factor for cardiovascular diseases, including heart attacks and strokes.

Cholesterol travels through the blood attached to proteins; these combinations are called lipoproteins. There are two main types: Low-density lipoprotein (LDL), often called 'bad' cholesterol because it carries cholesterol to your cells but can build up in artery walls, and High-density lipoprotein (HDL), known as 'good' cholesterol because it helps transport excess cholesterol back to the liver for removal.

For many people in the UK, hypercholesterolaemia is caused by a combination of lifestyle choices and genetic factors. Common contributors include:

• Dietary Habits: Eating too much saturated fat, found in sausages, fatty meats, butter, and cream, can increase LDL levels.
• Physical Inactivity: Lack of exercise can lower your 'good' HDL cholesterol.
• Smoking: Chemicals in cigarettes can damage the walls of your blood vessels, making them more likely to accumulate fatty deposits.
• Age and Gender: Cholesterol levels tend to rise naturally as you get older.
• Underlying Conditions: Type 2 diabetes, kidney disease, and an underactive thyroid (hypothyroidism) can affect cholesterol management.

It is also important to note Familial Hypercholesterolaemia (FH), an inherited condition where high cholesterol is caused by a genetic mutation. People with FH can have exceptionally high cholesterol levels from birth, regardless of their diet or lifestyle.

Because hypercholesterolaemia rarely causes symptoms, the only way to know your levels is through a blood test. In the UK, the NHS offers a free NHS Health Check every five years to adults aged 40 to 74 who do not have an existing heart condition. This check assesses your risk of heart disease, stroke, kidney disease, and type 2 diabetes.

A healthcare professional will take a blood sample, usually via a finger-prick test or a standard venous blood test. They will measure your total cholesterol, LDL, HDL, and triglycerides (another type of blood fat). The result is often used to calculate a 'QRISK' score, which estimates your percentage chance of having a cardiovascular event in the next ten years.

Lifestyle interventions are the first line of defence against high cholesterol. Small, sustainable changes can make a significant difference to your lipid profile:

• Switching Fats: Replace saturated fats with unsaturated fats found in olive oil, nuts, seeds, and oily fish (like mackerel or salmon).
• Increasing Fibre: Soluble fibre, found in oats, beans, pulses, and fruits, can help lower the absorption of cholesterol into your bloodstream.
• Staying Active: Aim for at least 150 minutes of moderate-intensity aerobic activity per week, such as brisk walking, cycling, or swimming.
• Limiting Alcohol: Reducing alcohol intake helps your liver process fats more efficiently.

If lifestyle changes alone are insufficient, or if your cardiovascular risk profile is high, a GP may prescribe medication. The most common treatments in the UK are statins (such as Atorvastatin or Simvastatin). Statins work by blocking the enzyme in the liver that produces cholesterol, thereby lowering LDL levels.

While some people worry about side effects, most individuals tolerate statins well. Common side effects can include mild muscle aches or digestive issues, but these often resolve over time. In more complex cases, other medications like ezetimibe or PCSK9 inhibitors may be considered, usually under the guidance of a specialist.

If you have recently received blood test results showing high cholesterol, or if you are concerned about your cardiovascular risk factors, speaking with an online GP can be a helpful next step. A GP can review your results in the context of your overall health, explain what the numbers mean, and discuss whether lifestyle changes or medication are appropriate.

You may also wish to consult a GP if you have a strong family history of early heart disease (before age 60) to determine if you should be screened for Familial Hypercholesterolaemia. An online consultation offers a convenient way to get evidence-based advice and prescriptions for maintenance medications like statins without needing to travel to a physical surgery.