What should I know about hdl cholesterin zu niedrig?

Low HDL cholesterol (high-density lipoprotein) is a well-established cardiovascular risk marker, though direct causality is debated. HDL is considered 'good' cholesterol because it helps remove excess cholesterol from arteries. Levels below 40 mg/dL in men and 50 mg/dL in women are considered low. Importantly, drugs that solely raise HDL (e.g., niacin, CETP inhibitors) have not shown reduced heart attack risk in large trials. Therefore, the focus is not on boosting HDL directly but on improving overall lipid profile and lifestyle. Aerobic exercise, weight loss, omega-3 fatty acids, moderate alcohol intake, and smoking cessation can modestly increase HDL. Underlying insulin resistance or metabolic syndrome often drives low HDL. Genetic causes like Tangier disease are rare. HDL should never be interpreted in isolation; it must be assessed alongside LDL, triglycerides, blood pressure, glucose, and inflammation markers. Direct-to-consumer lab tests can measure HDL, but interpretation requires a physician. Caveat: extremely low HDL (<20 mg/dL) warrants medical evaluation for rare genetic disorders.