Lay opinion vs evidence: Mikrobiom Männer

Lay opinion often claims that men have a fundamentally different gut microbiome due to hormones, diet, or lifestyle, leading to specific health risks or benefits. The scientific evidence shows some sex-based differences in microbiome composition (e.g., influenced by testosterone and estrogen), but these are generally small and overshadowed by factors like diet, medications, and environment. Studies indicate that men may have slightly lower bacterial diversity, but the clinical relevance remains unclear. Consumer tests like the MyBody-X gut microbiome test promise personalized dietary advice but rely on poorly validated algorithms. The evidence for such tests is rated as 'marketing' or 'unclear' because they cannot diagnose conditions and microbiome research is still emerging. Safety note: Do not base medical decisions on these test results; consult a physician for health concerns.