The Swank Diet is a diet that is low in saturated fat, which was proposed in 1949 by Roy Laver Swank, MD, PhD (1909–2008), academic neurologist at the University of Oregon, for the treatment of multiple sclerosis. The Swank Diet is a diet that is low in saturated fat, which was proposed in 1949 by Roy Laver Swank, MD, PhD (1909–2008), academic neurologist at the University of Oregon, for the treatment of multiple sclerosis. The claims made for the diet are unsubstantiated other than by Dr. Swanks' publications, e.g., Archives of Neurology & Psychiatry.