Richard D. Feinman

Richard David Feinman (born 1940) is a professor of biochemistry and medical researcher at State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, who studies nutrition and metabolism. His current area of research is the area of diet composition and energy balance. He is generally credited for doing the first serious scientific research on the Atkins Diet. He has published articles on application of thermodynamics to nutrition.His articles counter the view that "a calorie is a calorie".

He is a director of the Metabolism Society and a former co-Editor-in-Chief of the Open Access online medical journal, Nutrition & Metabolism.