Hyperlipidemia – Causes, Symptoms and Treatment
Hyperlipidemia refers to elevated levels of fats in the blood, particularly cholesterol and triglycerides. It is a major risk factor for cardiovascular disease.
Wissenswertes über "Hyperlipidemia"
Hyperlipidemia refers to elevated levels of fats in the blood, particularly cholesterol and triglycerides. It is a major risk factor for cardiovascular disease.
What is Hyperlipidemia?
Hyperlipidemia (also spelled hyperlipidaemia) is a medical condition characterized by abnormally high levels of lipids (fats) in the bloodstream. The most commonly elevated lipids are cholesterol (especially LDL cholesterol) and triglycerides. Because elevated blood fat levels rarely cause noticeable symptoms, the condition is often discovered incidentally during routine blood tests.
Causes
Hyperlipidemia is classified as either primary (genetic) or secondary (caused by lifestyle factors or underlying conditions).
Primary Causes
- Familial hypercholesterolemia (inherited elevation of LDL cholesterol)
- Familial combined hyperlipidemia
- Genetic hypertriglyceridemia
Secondary Causes
- Unhealthy diet high in saturated fats and sugar
- Obesity and physical inactivity
- Type 2 diabetes mellitus
- Underactive thyroid gland (hypothyroidism)
- Chronic kidney disease
- Excessive alcohol consumption
- Certain medications (e.g., corticosteroids, beta-blockers)
Symptoms
Hyperlipidemia is typically asymptomatic. In severe cases, the following physical signs may appear:
- Xanthomas: fatty deposits under the skin, often near tendons or joints
- Xanthelasmas: yellowish fatty deposits on the eyelids
- Corneal arcus: a whitish ring around the edge of the cornea
- Abdominal pain (in cases of very high triglycerides, with risk of pancreatitis)
Over time, persistently elevated blood lipid levels significantly increase the risk of atherosclerosis, heart attack, and stroke.
Diagnosis
Diagnosis is made through a blood test known as a lipid panel or lipid profile, which measures:
- Total cholesterol
- LDL cholesterol (often called the bad cholesterol)
- HDL cholesterol (often called the good cholesterol)
- Triglycerides
The blood sample is ideally taken after fasting. According to European guidelines, an LDL cholesterol level below 3.0 mmol/L (approximately 116 mg/dL) is the target for low-risk individuals, with much lower targets recommended for high-risk patients.
Treatment
Lifestyle Modifications
Lifestyle changes form the foundation of treatment for hyperlipidemia:
- Dietary changes: reducing saturated fats and trans fats, increasing fiber, fruit, and vegetables
- Regular physical activity (at least 150 minutes of moderate exercise per week)
- Weight loss in overweight or obese individuals
- Smoking cessation and reduction of alcohol intake
Medical Treatment
When lifestyle modifications are insufficient, medications may be prescribed:
- Statins (e.g., atorvastatin, simvastatin): first-line therapy for LDL reduction
- Ezetimibe: reduces cholesterol absorption in the intestine
- PCSK9 inhibitors (e.g., evolocumab): monoclonal antibodies for significant LDL reduction in high-risk patients
- Fibrates: primarily used to lower elevated triglyceride levels
- High-dose omega-3 fatty acids: used as adjunctive therapy for hypertriglyceridemia
References
- Mach F et al. - 2019 ESC/EAS Guidelines for the management of dyslipidaemias. European Heart Journal. 2020;41(1):111-188.
- World Health Organization (WHO) - Cardiovascular diseases: Key facts. WHO, 2023. Available at: https://www.who.int/news-room/fact-sheets/detail/cardiovascular-diseases
- Grundy SM et al. - 2018 AHA/ACC Guideline on the Management of Blood Cholesterol. Journal of the American College of Cardiology. 2019;73(24):e285-e350.
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Related search terms: Hyperlipidemia + Hyperlipidaemia + Hyperlipemia + Hyperlipiaemia