In support of my own autoimmune health, I'm taking a sabbatical for the month of December and releasing two of my favorite episodes from the archives that you might have missed. Today's episode is one of the most popular of all time. Once you start researching alternative approaches to treating autoimmune disease, it isn’t long before you hear of a gene mutation that can be a root cause for chronic illness and also a healing stumbling block. It’s called MTHFR. This is a very complex topic, and it’s easy to misunderstand and make mistakes trying to treat it. Our goal today is to explain MTHFR clearly in layman’s terms, talk about how you can tell if this mutation is indeed impacting your own health, and help you find a qualified practitioner to guide treatment. My guest is Dr. Ben Lynch, a world-renowned expert on this topic. He's the expert consulted by other experts.