Evidence check: Mikrobiom Test in the context of Fruchtbarkeit

The claim that a microbiome test can assess or improve fertility lacks robust scientific evidence. While plausible mechanisms exist—such as the gut microbiome's role in estrogen metabolism (estrobolome) and inflammation—commercial tests like those from MyBody-X have not been validated in clinical trials for fertility outcomes. Most supporting data come from animal models or small observational studies. Fertility is multifactorial, involving hormones, age, lifestyle, genetics, and organic pathologies, which far outweigh the microbiome's influence. Therefore, a consumer microbiome test cannot diagnose or guide fertility treatment. The evidence for such tests in this context is best classified as marketing. Caveat: Do not rely on a microbiome test for fertility decisions; consult a reproductive specialist instead.