warum ist hdl zu niedrig — can a DNA test help?

Low HDL cholesterol can have genetic as well as strong lifestyle causes (e.g., smoking, inactivity, overweight, high triglycerides). DNA tests like those from MyBody-X may analyze single variants in CETP, LIPC, or ABCA1 associated with HDL. However, effect sizes are small and explain only a fraction of the variance. A genetic test does not replace medical diagnostics – a lipid panel and lifestyle assessment are far more informative. The evidence for predictive utility is weak to moderate; many markers are not well replicated. Moreover, HDL is heavily influenced by diet and exercise. A DNA test can serve as a curious hint, but not as a guide for action. For clinically low HDL (<40 mg/dL in men, <50 mg/dL in women), a physician should investigate underlying causes (e.g., diabetes, metabolic syndrome, medications).