Documentary Review for The Root Cause BLOG: A new documentary Root Cause on Netflix explains how getting a root canal can be so devastating to the body. He contends that religious faith is not a legitimate method of understanding the world and that it is opposed to rational science. Dawkins gives particular focus to Islam, Judaism, and Christianity, interviewing devoted followers of each of these three faiths. $('li.sort-comments'). Root Cause is a feature length documentary based on one man's extraordinary true story a 10 year long journey to find the root cause of his panic attacks. This film follows the life of a young man after he undergoes extensive dental work, including a root canal. The documentary is comprised of two episodes: The God Delusion and The Virus of Faith. Root Cause is one man's personal journey of self-discovery and subsequent attempt to prove that a long accepted safe procedure might have health impacts. Root Cause is a feature length documentary featuring opinions from doctors and dentists from around the world, that try to postulate the health effects of the root canal procedure.