Leo Lutwak (March 27, 1928 - February 23, 2006) was a nutritionist, endocrinologist, and biochemist specializing in bariatrics.
[1] Born in The Bronx, Lutwak attended the City College of New York, graduating cum laude, followed by the University of Wisconsin-Madison (master's degree in biochemistry, 1946), the University of Michigan in Ann Arbor (Ph.D. biochemistry 1951), and Yale School of Medicine (M.D.
During his time there, he raised early concerns about fen-phen, an anti-obesity treatment found to increase risk of heart disease.
He also worked at Cornell University, studying the role of calcium in osteoporosis and the physiological effects of weightlessness.
His surviving family includes his sister and his seven children: Mark, Diane, Paul, Jean, Robert, David, and Aviva.