Myths vs facts: Mikrobiom Test and Fruchtbarkeit

Myths vs facts: Microbiome test and fertility. Myth: A microbiome test can diagnose infertility or predict fertility treatment success with high accuracy. Fact: Research links gut and vaginal microbiome composition to fertility outcomes, but the evidence is still emerging and not strong enough for routine clinical use. Some studies suggest that low Lactobacillus dominance in the vagina is associated with implantation failure or bacterial vaginosis, and gut dysbiosis may affect hormonal balance. However, effect sizes are modest, study designs vary, and many commercial tests lack clinical validation. A microbiome test may provide additional insights but should not replace standard fertility workup. Interpretation by a specialist is essential. Evidence grade: human-moderate. Caveat: No robust RCTs demonstrate improved fertility outcomes from microbiome testing.