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

The question of when to best drink kefir cannot be answered by a DNA test. Kefir is a fermented dairy product with probiotic properties; its effects depend on individual factors like gut tolerance, daily routine, and diet. Some people tolerate kefir better on an empty stomach, others prefer it with meals. While MyBody-X DNA tests analyze variants such as HLA-DQA1 (lactose intolerance) or TCF7L2 (insulin resistance), these have small effect sizes and do not provide personalized timing recommendations. The evidence for such tests is largely marketing-driven and not clinically validated. A DNA test cannot tell you whether to drink kefir in the morning, evening, or with meals. Instead, listen to your body and consult a doctor if you have intolerances. Claims that a genetic test can determine the optimal time for kefir consumption are scientifically unsupported.