wann kefir trinken — when to see a doctor?

Kefir is a fermented milk drink rich in probiotics. There is no strong evidence for a specific optimal time to drink it; many people consume it in the morning on an empty stomach to support gut health or in the evening as a snack. The key is individual tolerance. You should see a doctor if you experience persistent bloating, diarrhea, abdominal pain, or allergic reactions (rash, itching) after drinking kefir. Also consult a physician if you have a compromised immune system (e.g., after chemotherapy) or serious underlying conditions before regular consumption. Consumer DNA or microbiome tests may offer insights into your gut flora but are not diagnostic. Evidence for specific timing is weak – most recommendations are based on practical experience and mechanistic studies rather than large clinical trials.