Our food experts are contributors to this site as a public service and to promote their research on food resources and production. Stanley Goldfarb, M.D., F.A.C.P. Professor of Medicine, Associate Dean for Curriculum, Perelman School of Medicine University of Pennsylvania, Penn Medicine University Webpage: http://www.uphs.upenn.edu/renal/about_us/goldfarb.html Read Blog Posts: How Much Water Is Needed to Stay Hydrated?