High Cholesterol

What Is High Cholesterol (Dyslipidaemia)?

Dyslipidaemia, commonly known as high cholesterol, refers to an imbalance of fats (lipids) in the blood. This can include:

  • High LDL ("bad") cholesterol

  • Low HDL ("good") cholesterol

  • High triglyceride levels

Over time, these abnormalities can lead to the build-up of fatty deposits in the arteries, increasing your risk of heart disease, stroke, and other serious cardiovascular problems.

At London Heart Group, our experienced private cardiologists in London offer comprehensive testing and personalised treatment plans to reduce your cholesterol and protect your long-term heart health.

What Are the Symptoms of High Cholesterol?

Most people with high cholesterol have no obvious symptoms. It’s often detected through routine blood tests rather than noticeable signs. This makes regular cholesterol screening especially important if you have risk factors such as:

  • A family history of heart disease

  • Diabetes, high blood pressure, or obesity

  • Smoking or a sedentary lifestyle

In rare cases—especially in severe or inherited forms—high cholesterol may cause:

  • Xanthomas – fatty lumps under the skin or tendons

  • Xanthelasma – yellowish patches around the eyes

Because dyslipidaemia is a silent risk factor, early diagnosis and intervention are key to preventing complications like heart attack or stroke.

What Causes Dyslipidaemia?

High cholesterol can be caused by a combination of genetic and lifestyle factors, as well as certain health conditions or medications.

Common Causes Include:

  • A diet high in saturated fats and processed foods

  • Lack of physical activity

  • Being overweight or obese

  • Smoking and excessive alcohol use

  • Medical conditions such as diabetes, hypothyroidism, or kidney disease

  • Some medications, including corticosteroids and diuretics

  • Familial hypercholesterolaemia (FH) – a genetic condition causing very high cholesterol levels from a young age

Understanding the root cause of your high cholesterol helps us provide the most effective and personalised treatment plan.

How Is High Cholesterol Diagnosed?

High cholesterol is diagnosed with a simple blood test, often called a lipid profile. This measures your:

  • Total cholesterol

  • LDL (bad cholesterol)

  • HDL (good cholesterol)

  • Triglycerides

At London Heart Group, we go further by offering an advanced cardiovascular risk profile, which may include:

  • Lipoprotein(a)

  • Apolipoprotein B

  • Genetic testing for conditions like familial hypercholesterolaemia (FH)

Screening is typically recommended from age 40, or earlier if you have risk factors such as a family history of heart disease, diabetes, or high blood pressure.

How Is Dyslipidaemia Treated?

Treatment focuses on lowering cholesterol levels to reduce your long-term cardiovascular risk. Our approach combines lifestyle changes and, if necessary, medication.

Your personalised treatment may include:

  • A heart-healthy diet low in saturated fats and processed foods

  • Regular exercise and weight management

  • Stopping smoking and reducing alcohol intake

  • Cholesterol-lowering medications such as statins, ezetimibe, or PCSK9 inhibitors

If you're unsure whether you need medication, we can arrange additional assessments such as CT coronary angiography or CariHeart imaging to guide the decision. Our consultants also provide ongoing support and follow-up testing to monitor your progress and ensure your treatment is safe and effective.

Book a Private Cholesterol Check in London

Concerned about your cholesterol levels or heart disease risk? At London Heart Group, our leading private cardiologists in Central London offer fast access to comprehensive testing, expert advice, and personalised treatment plans.

Call now or book your appointment online to take control of your heart health today.