"Belief was associated with not only improved psychological well-being, but decreases in depression and intention to self-harm," David H. Rosmarin, a McLean Hospital clinician and instructor in the Department of Psychiatry at Harvard Medical School, said in a statement.I am not a psychiatrist nor do I play one on TV but I suppose that faith in God enables the patient to feel that they have something on their side and that in the end good will come out of what ever their issue. A belief in God can be a great stabilizer of someone's outlook.
The study looked at 159 patients, recruited during a one-year period. Each participant was asked to gauge his or her belief in God. Levels of depression, well-being, and self-harm were assessed at the beginning and end of the treatment program.
More than 30 percent claimed no specific religious affiliation yet still experienced the same benefits in treatment if their belief in a higher power was rated as moderately or very high.
Patients with "no" or only "slight" belief in God were twice as likely not to respond to treatment than patients with higher levels of belief.
"Belief in God is associated with improved treatment outcomes in psychiatric care," Rosmarin said. "More centrally, our results suggest that belief in the credibility of psychiatric treatment and increased expectations to gain from treatment might be mechanisms by which belief in God can impact treatment outcomes."
The study does not claim that one cannot remain sane without a faith in God, but it certainly seems it may help.