wann am besten kefir trinken — what symptoms are typical?

The question about the best time to drink kefir and typical symptoms cannot be answered from the provided context. The available information covers genetic markers (IL6, TNF) and general gut microbiome tests, but contains no specific data on kefir, its optimal timing, or associated symptoms. Kefir is often consumed for its probiotic content, but evidence on timing and symptoms is inconsistent. Possible symptoms of kefir intolerance (e.g., bloating, diarrhea) vary individually and are not supported by the given sources. For evidence-based advice, clinical studies or guidelines would be needed. Without such evidence, the answer remains speculative. I recommend observing symptoms in a personal context and consulting a doctor if issues persist.