"Researchers have documented the gut healing abilities of parasites like hookworm. When hookworms are introduced into the gut of people with celiac disease in the right amount, and kept at therapeutic levels, patients see their celiac symptoms disappear and their guts return to a healthy, normal condition. While still very much in the experimental phase, researchers are keen to investigate various strains and to determine the best therapeutic levels for these treatments. If all goes well, treatments based on parasitic worms will likely become more viable and more common in the future."
Hookworms in the form of Necator americanus promoted tolerance and stabilized, or improved, all tested measures of gluten toxicity in volunteers with celiac disease. So, after being voluntarily infected with 20 hookworms, these celiac disease volunteers were able to eat increasingly large amounts of gluten with none of the usual changes or adverse symptoms.