I have colitis and helminth therapy is on my Last Resort list. There are a limited number of drugs to treat the condition, and insurance doesn't cover many of them.
The facebook group for DIY helminth therapy is a fascinating place, let me tell you. But there are several possible species of helminths to try. It's all a bit overwhelming.
And infested with worms. Most allergies are caused by the antibody we evolved to fight worms (and venom) [1].
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5010491/