There's also genetic relations with schizophrenia. I've always wondered if these had to do with nature or nurture. Often studies simply say they check a person's mental health background. Is it really genetic? Perhaps it could also be what gets taught and passed down to us or the home we live in.
Perhaps the mental illnesses that our society experiences is nothing more than poorly regulated drinking water, mold in the walls, a bad diet, Mom's spaghetti, or spices that don't agree with us.
I find this research very interesting. The bacteria change could be a side effect of something but since the bacteria is atypical, it leads to a very interesting question: How did it get there?
What foods carry this bacteria? Does this bacteria kill other healthy bacteria? Does it serve a purpose?
I'm not a biology specialist, but I would love to know if nutrition is related.