was kostet ein gentest — can a DNA test help?

The cost of a DNA test varies widely: simple single-variant tests (e.g., MTHFR) cost around €30–80, while comprehensive DNA nutrition or longevity tests (e.g., from mybody®x) range from €150 to €400. Whether a DNA test can help depends on the question. For well-established associations with moderate evidence (e.g., lactose intolerance, MTHFR variants), it can provide useful clues. For complex traits like obesity (e.g., MC4R variant), single SNPs have low predictive power – lifestyle factors matter far more. Many marketed tests (e.g., IgG food sensitivity tests) lack scientific support and are not recommended by mainstream medicine. Important: a DNA test is not a medical diagnosis. Results should be interpreted cautiously, ideally with a professional. Evidence ranges from human-moderate (MTHFR, MC4R) to mechanistic or practice-based (IgG).