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

The optimal timing for drinking kefir depends on your goals. For probiotic benefits, many experts suggest consuming kefir on an empty stomach or between meals, as stomach acid is less concentrated, potentially allowing more live bacteria to reach the gut. However, individuals with sensitive digestion may tolerate it better with food. A microbiome test can theoretically provide insights into your gut flora composition, but the evidence for personalized recommendations based on such tests is currently weak. Most direct-to-consumer microbiome tests lack robust validation, and their interpretations often overclaim. While a test might indicate low levels of certain beneficial bacteria, whether kefir specifically corrects this is not well-established. Current evidence supports general dietary diversity and regular consumption of fermented foods rather than tailored advice from microbiome tests. For most people, drinking kefir daily at a consistent time (e.g., morning) is reasonable, but there is no strong evidence for a single 'best' time. Evidence: human-moderate for general probiotic effects, mixed for personalized microbiome testing.