17 May 2019 --- An “unnatural and particularly comprehensive” nutrient supply in the human gut is responsible for the decoupling of bacteria from their host organism, thus upsetting the delicate balance of the microbiome and promoting disease development. This is according to a new study by the Collaborative Research Centre (CRC) 1182 at Kiel University, Germany, which examined similar symbiotic activity in ocean coral polyps. The researchers attribute an unhealthy gut microbiome to unbalanced, energy-rich and low-fiber diets.