Research Director at the French Research Institute in Agricultural Sciences, INRA, Dr. Joël Doré is currently President of the Executive Committee of the Pre-Industrial Demonstrator MetaGenoPolis, a platform of excellence dedicated to quantitative and functional metagenomics, funded by the French government Futures Investments. He is Deputy Head of the MICALIS institute “Food and Gut Microbiology for Human Health” and scientific board member of Microbiology Pole of the Doctoral School “Therapeutic Innovations” at Paris-XI University. Joël Doré received his PhD from the University of Illinois at Urbana-Champaign, USA, in 1988. His main research interest is the molecular assessment of the human intestinal microbiota in health and disease and metagenomic investigation of the molecular cross-talk between intestinal bacteria and human cells. Dr. Doré has published >120 publications in peer reviewed scientific journals. His goal is to provide a better understanding of the intestinal ecosystem in order to support therapeutic choices in the medical area, as well as health claims for functional foods.