I think it can be for those who are subject to that. However, if you read about transcendentalism, you'll find it to be one of the most rational works ever written on the nature of spirituality, which says, in part, that much of spirituality cannot be realized within the framework of the tools that humans have the ability to work with. (Needless to say, that's not the way Immanuel Kant expresses it, but it hits at the idea that much of it cannot be proven by the mind.)

Psychiatrists are guessing at the answer to that question, I think, particularly
when there is no evidence of mental illness.

If you look back at the lives of some of the saints and their lives before conversion and after conversion, one might think that bipolar illness was part of their condition,too.

However, one must allow for sublimation of the basic drives that is involved in the life of nuns, priests and monks, which, according to one doctor (not a psychiatrist)who talked to me about it, is the effort to live at the highest level human beings are capable of living. That is not an illness, and it is real.

And spirituality is not an illness, either, though the mentally ill person might try to
mimic it and genuinely believe that he/she has hold of something real.

Your question is worthy of your doing some research, IMHO.

Good question.

Genetic