wann soll man kefir trinken — can a DNA test help?

The question of when to drink kefir is a nutritional and lifestyle consideration, not a genetic one. A DNA test cannot tell you the optimal timing for kefir consumption. Kefir is often consumed in the morning or between meals to support gut health, but evidence for specific timing is weak and individual. A DNA test might provide clues about lactose intolerance (LCT gene) or celiac risk (HLA-DQA1), but these do not directly inform kefir timing. Most people with lactose intolerance tolerate kefir better than milk due to fermentation, but this is not genetically predictable. The provided context contains no specific studies linking DNA to kefir timing. Therefore, evidence is rated as 'unclear'. Rely on personal tolerance and dietary habits rather than genetic tests for such decisions.