Evidence check: Kefir Darm in the context of Fruchtbarkeit

Kefir is often promoted as a probiotic food that supports gut health. A healthy gut microbiome may positively influence fertility through modulation of inflammation and hormone balance (e.g., estrogen metabolism). However, there is no direct high-quality human evidence that kefir alone improves fertility. Most evidence comes from general probiotic studies or research on gut microbiome and fertility – showing moderate associations but not causation. MyBody-X tests can analyze markers like IL-6 (rs1800795) or nutrient deficiencies that might be indirectly relevant, but they do not specifically test kefir's effects. The predictive value of such tests is limited and does not replace medical advice. For fertility concerns, consultation with a specialist is essential.