wie gesund ist kefir — can a DNA test help?

Kefir is a fermented dairy product rich in probiotics, vitamins, and minerals. Studies show benefits for gut health, immunity, and possibly metabolism. However, a DNA test can provide very limited, clinically relevant information regarding kefir consumption. While certain gene variants (e.g., LCT for lactose tolerance, APOA5 or APOE for fat metabolism) could theoretically influence tolerance or utilization, the effects are small and insufficient to justify personalized recommendations. The evidence for such DNA-based claims is mostly observational and not supported by randomized trials. If you tolerate kefir well, you generally benefit from its health advantages regardless of your genotype. A DNA test is not necessary for deciding whether to include kefir in your diet and can be misleading if marketing overpromises.