Somewhat related to your idea, they seem to have some success with parasitic therapy with things like Crone. Introduce a "harmless" parasite (worm) and the body

Somewhat related to your idea, they seem to have some success with parasitic therapy with things like Crone. Introduce a "harmless" parasite (worm) and the body's immunesystem to trigger it. Not sure how long they keep it in the body, seems to be mostly for a longer time. https://en.wikipedia.org/wiki/Helminthic_therapy https://en.wikipedia.org/wiki/Helminthic_therapy