Myths vs facts: Body-Balance Check | Testosteron-Test and Darmgesundheit

The terms 'Body-Balance Check', 'Testosterone Test', and 'Gut Health' are often marketed with DNA tests, but the evidence is weak. A genetic test alone cannot reliably predict testosterone levels – these are far more influenced by age, lifestyle, sleep, and stress than by single gene variants. Gut health also cannot be deduced from DNA alone; microbiome analysis (stool tests) is more informative, but even its clinical utility is often overstated. The polygenic risk scores for obesity mentioned in the context have limited predictive power, especially outside European populations. Many supplement claims are based on weak or mechanistic evidence. A myth is that a genetic test guarantees personalized 'balance'. Fact: such tests provide hypotheses, not diagnoses. They should be medically supervised and complemented by blood work or stool tests. Without clinical validation, it remains marketing. Special caution is needed for children's tests – pediatric studies are lacking. The evidence for these combo tests is overall 'mixed' to 'unclear'.