Dr. Russell Blaylock is an author and a retired U.S. neurosurgeon. He was a clinical assistant professor of neurosurgery at the University of Mississippi Medical Center. In 2013 he was a visiting professor in the biology department at Belhaven College. He has endorsed views inconsistent with the scientific consensus, including that food additives such as aspartame and monosodium glutamate are excitotoxic in normal doses.