Bipolar disorder and schizophrenia (the main causes of psychosis) are genetic, not caused by &quot;spiritual crisis&quot;. The spiritual stuff is a symptom of psychosis, not a cause. &quot;Heritability for schizophrenia was 64% and for bipolar disorder 59%.&quot;<p><a href="http:&#x2F;&#x2F;europepmc.org&#x2F;articles&#x2F;pmc3879718" rel="nofollow">http:&#x2F;&#x2F;europepmc.org&#x2F;articles&#x2F;pmc3879718</a>