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

The number of human genes is currently estimated at about 20,000 to 25,000 protein-coding genes, based on the Human Genome Project and subsequent research. A microbiome test, such as those offered by MyBody-X, does not measure human genes; instead, it analyzes the bacterial DNA in your gut. It can reveal the diversity and composition of your gut microbiota but cannot tell you how many genes you have or their functions. Therefore, the idea that a microbiome test can help answer 'how many genes does a human have' is incorrect. However, microbiome tests may indirectly provide insights into metabolic pathways influenced by bacterial genes. The evidence for their utility in general health is often mechanistic or based on association studies, not robust clinical validation. Caveat: microbiome tests are not a substitute for genetic testing or medical diagnosis.