wann kefir am besten trinken — when to see a doctor?

Kefir is a fermented dairy product rich in probiotics. The optimal time to drink it is individual: some tolerate it best on an empty stomach, others prefer it with meals. No strong scientific evidence supports a specific time of day – effects depend on personal gut microbiota and tolerance. When to see a doctor? If you experience persistent digestive issues such as bloating, diarrhea, abdominal pain, or nausea after consuming kefir. Caution is also advised for individuals with compromised immune systems, celiac disease, or lactose intolerance. A doctor should be consulted if symptoms last more than a week or worsen. The evidence is practice-based (clinical experience) rather than from controlled trials. Caveat: kefir is not a medicine; serious symptoms require medical evaluation.