Eisen-Ferritin Selbsttest: can a microbiome test help?

A microbiome test can provide insights into gut bacteria composition, which theoretically influences iron absorption. Certain bacteria produce short-chain fatty acids that support gut barrier function, and some strains can bind or release iron. However, the evidence for direct clinical utility in diagnosing or managing iron deficiency is weak. Blood ferritin remains the gold standard. A microbiome test might be complementary in cases of suspected malabsorption or chronic inflammation, but it does not replace medical evaluation. Most commercial tests overstate their predictive power. Therefore: a microbiome test can be an exploratory tool, but not for sole decision-making on iron supplementation. Safety note: Always consult a doctor for iron deficiency, as excess iron can be harmful.