wie trinkt man kefir — when to see a doctor?

Kefir is a fermented milk drink rich in probiotics. It is typically consumed plain or in smoothies, starting with 100–200 ml per day. Increase gradually if tolerated. See a doctor if you experience persistent digestive issues (bloating, diarrhea, cramps) after drinking kefir; if you are immunocompromised (e.g., post-transplant, chemotherapy) due to infection risk from live cultures; if you have a known milk protein allergy; or if symptoms like fever, blood in stool, or unexplained weight loss occur. Evidence for health benefits is mostly mechanistic and observational; robust clinical endpoints are lacking. MyBody-X does not provide specific kefir guidance. This answer is based on general medical knowledge, not on the provided context.