Dr Richard J Johnson is currently an Emeritus Professor in Medicine at the University of Colorado. He is board certified in Nephrology, Infectious Diseases and Internal Medicine. He is a well respected clinician and also a researcher whose scientific investigation has focused on the cause of obesity, diabetes and chronic kidney disease. His investigations span from molecular biology to clinical trials and from human and vertebrate biology as it relates to climate change and survival. He has published over 800 articles and is highly cited, with > 100,000 citations and an h index of 187. Much of his science has focused on the role of sugar, and especially fructose, in the pathogenesis of obesity and diabetes, as well as the role of uric acid in evolutionary biology. He also is an educator who is one of the founding editors of Comprehensive Clinical Nephrology, a popular textbook in nephrology.