Myths vs facts: Fertility Check | Fruchtbarkeits-Test and gut health

The question of myths vs. facts regarding fertility checks and gut health is important, as many commercial tests overstate the connection. A fertility check (e.g., hormone panels, AMH, semen analysis) is medically valid when there is a concrete desire to conceive. Gut health (microbiome) is often marketed as a 'key to fertility,' but the evidence is mostly mechanistic, coming from animal studies or small human trials. No robust randomized controlled trials show that optimizing the microbiome alone significantly improves fertility. Myth: 'A gut test tells you exactly what to eat to get pregnant' – this is an exaggeration. Fact: Chronic inflammation, poor diet, and impaired gut barrier can affect fertility, but the effect is individual and multifactorial. Consumer DNA tests (e.g., variants in PER1 or COMT) have no clinical relevance for fertility. The overall evidence level is 'mixed': plausible mechanisms exist, but clinical confirmation is lacking. Safety note: Do not rely solely on genetic or microbiome tests; for fertility issues, a medical workup (gynecology/andrology) is essential.