Leaflets Mitochondrial diagnostics BHI Metabolome diagnostics Mikrobiom 2.0 „Leaky gut“ Selenium and selenoprotein P Irritable Bowel Syndrome (IBS) Hormones in Saliva Tryptophan metabolism Histamine Intolerance Chronic Stress Fatty acids and their importance for health Parasites in the intestinal tract The Intestinal Microbiome