Inconceivable! This is not good. Psychiatric disorders may have a genetic component, some appear to be found in families, but the jury is out about the physiological proof. If you were raised by a person who had depression, the influence of that on the child, and the tendency for the child to have depression is strong. Nature vs Nurture. Trauma, early childhood trauma, can cause mental illness, but it does not show up in the blood. Brain chemistry and MRI's can give you an idea Early studies in schizophrenia involved autopsies of the brain, proved nothing. And who will be the human lab rats? Brave New World. And who is going to say it is a disorder? Maybe it's a gift. Autism used to be called childhood schizophrenia, and who knows how many genius savants were thrown to rot in institutions? Grant writers should be thrown into institutions, save a lot of money that way.