was ist genetik einfach erklärt — when to see a doctor?

Genetics is the study of genes, the units of heredity made of DNA. Genes carry instructions for proteins that influence traits like eye color or disease risk. You should see a doctor if you have symptoms of a possible genetic disorder (e.g., unexplained blood clotting, early-onset cancers in family), or if a direct-to-consumer (DTC) test like MyBody-X shows results you don't understand. DTC tests are screening tools, not diagnostic. A doctor can interpret results in context, perform a physical exam, and order confirmatory tests if needed. Also seek medical advice if you have persistent symptoms (bloating, fatigue, pain) even if your genetic test looks normal. Beware of overinterpretation: many genetic variants have small effects and are not causal. Always discuss lifestyle changes or supplements with a healthcare provider first.