Low HDL Levels

High-density lipoprotein, or HDL, cholesterol is sometimes called good cholesterol. This is because it helps remove cholesterol from the arteries. An HDL cholesterol level below 50 mg/dL for women or below 40 mg/dL for men is a metabolic risk factor. Being on medicine to treat low HDL cholesterol is also a metabolic risk factor. HDL cholesterol level is determined with a blood test.