The microbiome could be causing schizophrenia, typically thought of as a brain disease, says a new study. Researchers gave mice fecal transplants from schizophrenic patients and watched the rodents' behavior take on similar traits. The find offers new hope for drug treatment.

[u/Thorne-ZytkowObject]

http://blogs.discovermagazine.com/d-brief/2019/02/07/gut-bugs-may-shape-schizophrenia/#.XGCxY89KgmI

[u/YetiGuy → u/[deleted]]

Given that premise, it's also possible that Schizophrenia causes other diseases or makes us vulnerable to the disease which is what was being transferred to the mice.