wie trinkt man kefir am besten — when to see a doctor?

Kefir is a fermented dairy drink rich in probiotics. For best results, start with small amounts (e.g., 100–150 ml daily) and increase gradually to allow your gut to adapt. Choose plain, unsweetened kefir to avoid added sugars. See a doctor if you experience persistent bloating, diarrhea, or abdominal pain after drinking kefir, or if you have a compromised immune system (e.g., post-chemotherapy) or a condition like histamine intolerance. Also consult a physician if you are unsure about interactions with medications. Note: This advice is based on general practice, not on the provided context, which lacks kefir-specific information.