HDL Cholesterol

Function

High-Density Lipoprotein (HDL) is frequently referred to as 'good' cholesterol. Its primary function is 'reverse cholesterol transport,' a process where it collects excess cholesterol from the blood and arterial walls and transports it back to the liver for excretion or recycling.

Why it is Ordered

HDL is measured as part of a lipid panel to assess an individual's risk of developing cardiovascular disease (CVD). Unlike LDL (the 'bad' cholesterol), higher levels of HDL are generally associated with a lower risk of heart attacks, strokes, and atherosclerosis.

Associated Conditions

• Coronary Artery Disease: Low HDL is a significant independent risk factor for plaque buildup in the heart's arteries.
• Metabolic Syndrome: Characterized by low HDL, high triglycerides, abdominal obesity, and insulin resistance.
• Tangier Disease: A rare genetic disorder resulting in extremely low levels of HDL.
• Hyperalphalipoproteinemia: A condition where HDL levels are exceptionally high, which is usually cardioprotective but can sometimes be associated with specific genetic variations.

Summary

Maintaining high levels of HDL through aerobic exercise, healthy fats (like olive oil), and smoking cessation is a key strategy in preventative cardiology. It serves as a vital marker for long-term vascular health.