Harold "Hal" Morgenstern is an American epidemiologist and professor of epidemiology at the University of Michigan in Ann Arbor.
Morgenstern received his Bachelor of Architecture from the Massachusetts Institute of Technology in 1969.
He then attended the University of North Carolina at Chapel Hill, where he received his Master of Regional Planning in 1974 and his Ph.D. in epidemiology in 1978.
[1] In 2003, he joined the faculty of the University of Michigan, originally as the Thomas Francis Jr.
Specifically, he has researched the possible carcinogenic effects of working at the Santa Susana Field Laboratory in Simi Valley, California,[3][4] and recreational marijuana use, which he does not think causes cancer.