They don&#x27;t use that word because that&#x27;s what heritability implies. The fact it has a genetic cause doesn&#x27;t mean that everyone with those genes will have bipolar disorder.<p>Of course I don&#x27;t know everything. I am however more inclined to believe things with a lot of evidence (such as the genetic basis for schizophrenia and bipolar) rather than those without evidence (that it&#x27;s caused by spiritual crisis).