In 1948, Dr. Swank began test a low saturated fat diet in multiple sclerosis, and in the year 2000, he was able to contact 15 patients who had been on the diet for approximately 50 years, and 13/15 were still walking independently and appeared youthful and vibrant. This video explains the theoretical basis of a low saturated fat diet, details of the diet, and Swank’s research along with some critiques and skepticism.