Yoon-Keun Kim received his M.D. in 1987 and PhD degree in Allergy and Clinical Immunology in 1995 from the Seoul National University of College of Medicine. After training residency in Department of Internal Medicine and fellowship in Division of Allergy and Clinical Immunology of the Seoul National University Hospital from 1991 to 1997, he performed his research in the Department of Allergy and Clinical Immunology, Seoul National University College of Medicine as an Assistant and Associate Professor from 1999 to 2006. During this period, he actively had worked research focused on the immunopathogenesis of asthma and allergy. He demonstrated that non-eosinophilic asthma is induced by both Th1 and Th17 cell responses, whereas eosinophilic asthma by Th2 cell response. Moving his position to the Department of Life Science, Pohang University of Science and Technology (POSTECH), he extended his research interests to the pathophysiology of immune-based inflammatory diseases and translational research covering cutaneous, gastrointestinal, diabetes, and antibiotic-resistance in addition to the respiratory diseases. Especially, he has elucidated the role of extracellular vesicles derived from microbes on the pathogenesis of inflammatory and metabolic diseases. Establishing MD Healthcare Inc. in October of 2014, Yoon-Keun aspires to provide a platform for integrative health service consisting of diagnosis, prevention, analysis, and nutrition which will lead to improvement of overall health for the population.