Risks and limits of Mikrobiom Ernährung

The so-called 'microbiome nutrition' often promises personalized optimization of gut flora through probiotics, prebiotics, or specific diets. However, the scientific evidence is limited: while there are robust associations between the microbiome and metabolic/immune functions, causal effects of individual foods or supplements are generally weak and highly individual. Many commercial tests analyze only a few bacterial genera and provide no clinically validated recommendations. Moreover, indiscriminate probiotic use in healthy individuals may even destabilize the microbiome. The major limitation is the lack of standardization: results from different providers are hardly comparable, and long-term evidence is scarce. Risks include overblown health claims, unnecessary costs, and potential interactions with medications or in immunocompromised individuals. A balanced, fiber-rich diet remains the safest approach – without relying on non-evidence-based personalization promises.