wie oft kefir trinken — when to see a doctor?

How often to drink kefir depends on individual tolerance. Generally, 100–200 ml per day is well tolerated, as kefir contains probiotics that may support gut health. If you have a sensitive digestive system, start with a few sips daily and increase slowly. You should see a doctor if you experience persistent bloating, diarrhea, abdominal pain, or skin rashes after consuming kefir. Also, if you are immunocompromised (e.g., after chemotherapy, HIV) or have serious underlying conditions, consult a physician before regular consumption because kefir contains live microbes. The evidence for kefir is mostly from observational studies and anecdotal reports; there are no strict clinical guidelines on frequency. Consumer DNA or microbiome tests (like those from MyBody-X) cannot reliably predict your individual response to kefir. Caveat: kefir is a food, not a treatment; do not replace medical advice with self-experimentation.