Dr. Pieter Cohen, a graduate of Yale School of Medicine, is an associate professor of Medicine at Harvard Medical School and an internist at Cambridge Health Alliance in Somerville, Massachusetts. Dr. Cohen is a national expert on safety of dietary supplements.

Along with analytic chemistry colleagues, he has spent the last decade exploring the boundaries between drugs and supplements. His work has been published in the the top medical and public health journals.  Science has described him as “something of a mix of Indiana Jones and Sherlock Holmes in the supplement world. With chemist colleagues in the United States, Brazil, and Europe, he hunts for drugs illegally buried in supplements.” His advocacy has led to the FDA banning multiple drugs and issuing dozens of warnings. His work has been published in the New England Journal of Medicine, JAMA, JAMA Internal Medicine, American Journal of Public Health and Annals of Internal Medicine.