DIY Parasite Infection Treats Autoimmune Disorders

In 2007, John Scott, who had extreme food and environmental allergies, chronic fatigue and Crohn’s disease, participated in a Nottingham University study to test the safety of hookworms (Necator americanus) on Crohn’s patients. It was a placebo-controlled study, but Scott assumed he received worms because his condition improved. So when the study ended, he wanted the worms back.