Kefir Darm: which diet helps?

Kefir is a fermented dairy product rich in probiotics (bacteria and yeasts). Evidence suggests that regular kefir consumption can positively influence gut microbiota diversity and may have anti-inflammatory effects. However, the evidence is moderate: many studies are small or show only modest benefits. A diet high in fiber, prebiotics (e.g., oats, bananas, onions), and other fermented foods can further support gut health. Individual factors such as lactose tolerance (genetically determined) or existing gut conditions matter. The SNP rs662799 (APOA5) you mentioned relates to lipid metabolism, not directly to gut flora, so it is not relevant here. MyBody-X tests may provide insights into lactose tolerance or inflammatory tendencies, but they do not replace medical advice. For persistent gut issues, consult a healthcare professional.