Scientists have established a link between religious fundamentalism and brain damage - Raw Story

A study published in the journal Neuropsychologia has shown that religious fundamentalism is, in part, the result of a functional impairment in a brain region known as the prefrontal cortex. The findings suggest that damage to particular areas of the prefrontal cortex indirectly promotes religious fundamentalism by diminishing cognitive flexibility and openness....
https://www.rawstory.com/2019/04/scientists-established-link-religious-fundamentalism-brain-damage/