wie teuer ist ein gentest — what are common causes?

The cost of a genetic test cannot be stated precisely from the given context, as no pricing data is provided. Generally, direct-to-consumer (DTC) genetic tests range from about 50 to 500 EUR, depending on scope (ancestry, health, nutrigenetics, etc.). Common reasons for testing include: 1) ancestry and genealogy, 2) hereditary disease risk (e.g., BRCA), 3) nutrigenetics (e.g., FTO variants and weight management), 4) pharmacogenetics (drug response), and 5) sports/fitness optimization. However, evidence for many of these applications is weak to moderate. For example, FTO variants have a small effect (~0.3 BMI per allele), and lifestyle factors are far more influential. MyBody-X's own materials do not provide RCT evidence that DNA tests cause weight loss; the evidence is marketing/unclear. Consumers should be cautious and consult healthcare professionals before making medical decisions based on such tests.