Religion in General is irrelevant to human health. Moreover it prevents and actually harmful to health. How many people were hoping for a prayer and as a result launched the disease and lost his life.
I recommend going through some of my prior posts in this thread. I have highlighted numerous studies that examine various aspects of the relationship between religion and human health.
The data available clearly shows that religion is both highly relevant and highly beneficial to human health.
Now a lot bought research. There are studies that talk about the placebo effect but its effectiveness is exaggerated. Moreover, no one investigated the damage from this effect. I am sure that health is the prerogative of physicians.