was ist ein gen — can a microbiome test help?

A gene is a fundamental unit of heredity made of DNA that provides instructions for making proteins. Genes influence many body functions, from digestion to metabolism. A microbiome test, on the other hand, analyzes the bacterial diversity in your gut, not your genes. Such tests can offer insights into your gut flora composition, but they do not replace genetic or medical diagnostics. For symptoms like bloating or fatigue after meals, genetic tests for lactose or fructose intolerance are often more informative, as they are based on well-studied gene variants. Microbiome tests currently have weak evidence for concrete health claims – many results are marketing-driven. A DNA test can provide clearer, though not diagnostic, information. Importantly, neither a microbiome nor a genetic test can diagnose diseases like celiac or diabetes. Persistent symptoms require a doctor's visit. In Germany, the Genetic Diagnostics Act (GenDG) prohibits genetic testing of minors without medical indication. In summary: a gene is a DNA segment; a microbiome test has limited help and should be viewed critically.