HDL Cholesterol

The protective lipoprotein — higher is generally better.

What it is

HDL (high-density lipoprotein) transports cholesterol from peripheral tissues back to the liver for excretion. It has anti-inflammatory and antioxidant properties and is often called "good cholesterol."

Why it matters

Low HDL is an independent cardiovascular risk factor. In cancer, low HDL correlates with worse outcomes in several studies — possibly because HDL has direct anti-tumour immune functions. Raising HDL through exercise, omega-3s, and smoking cessation is one of the more impactful lifestyle interventions.

How to test

Full lipid panel. Fast 9–12 hours beforehand.

This information is for educational purposes only. Always discuss testing and interpretation of results with your care team.

Optimal range

Below 1.0 mmol/L (men) / 1.3 (women)

low — cardiovascular risk factor

1.0–1.5 mmol/L

acceptable

Above 1.5 mmol/L

optimal

How often

Every 6–12 months.