Brain interactions differ between religious and non-religious subjects.

[defacto7]

(Medical Xpress)—An Auburn University researcher teamed up with the National Institutes of Health to study how brain networks shape an individual's religious belief, finding that brain interactions were different between religious and non-religious subjects.
....snip

The group found differences in brain interactions that involved the theory of mind, or ToM, brain network, which underlies the ability to relate between one's personal beliefs, intents and desires with those of others. Individuals with stronger ToM activity were found to be more religious. Deshpande says this supports the hypothesis that development of ToM abilities in humans during evolution may have given rise to religion in human societies.

http://medicalxpress.com/news/2014-01-brain-interactions-differ-religious-non-religious.html

I don't have any philosophically earth shaking comment but I thought it was an interesting study.