wann trinkt man kefir am besten — can a DNA test help?

The best time to drink kefir depends on individual factors such as digestive sensitivity, daily routine, and dietary habits. Some people tolerate kefir better on an empty stomach, while others prefer it after a meal to support probiotic effects. A DNA test cannot reliably determine the optimal timing. The nutrigenetic tests offered by MyBody-X (e.g., their 'metabolism test') rely on SNPs with mostly small effect sizes and are considered insufficiently validated by the scientific community. Although variants in genes like MTNR1B (blood sugar regulation) or LCT (lactose intolerance) may influence dairy tolerance, the evidence is weak and not specific to kefir. Claims that a DNA test can pinpoint the perfect time to drink kefir are marketing-driven and lack solid evidence. Instead, listen to your body: morning kefir may stimulate digestion, while evening kefir could support gut microbiota overnight. A genetic test is unnecessary for this decision.