wieviel gene hat ein mensch — can a microbiome test help?

Humans have approximately 20,000–25,000 protein-coding genes – a well-established fact from genome research. As for whether a microbiome test can help: current consumer tests (e.g., Magen-Darm-Gesundheit or gut microbiome tests) are not validated to diagnose conditions like leaky gut or to improve athletic performance. The evidence is weak (marketing/observational). They show relative bacterial abundances but no clinically actionable results. If you want to know how many genes you have, no microbiome test is needed – just consult basic science. Be cautious of overblown claims: no consumer test can reliably tell you whether you have a microbiome problem or how to fix it.