On the subject of mysticism, or whatever you want to call it, there are many who believe those who are made psychically weak/tired are more susceptible to spirit activity or more in sync with the supernatural side of the world. They also believe that link won't necessarily vanish if the person becomes healthy/alert.
Wow, you just reminded me that when my daughter was younger, while she was still having seizures and before going gluten free, she used to tilt her face up to the sky and say that she could feel God touching her face. She spoke of reincarnation at a very early age before she had ever heard of the topic anywhere. I always wondered if her seizures were giving her a window into another realm. Maybe it was the gluten?
I experience in similar ways, more so when glutened (or exhausted), but I don't think it's because of or even related to gluten, nor do I think it's a sign of insanity. But, one of my parents believes that kind of stuff. If I had different or less understanding parents, I would be worse off. I've never felt god touch my face, heard that tends to be more seizure-related, but you never know.