I don't think that fundamentalism has anything to do with Jesus Christ. They call themselves Christians but if that's Christian count me out. Fundamentalism is built on fear and greed. They're telling you to give them your money otherwise you're going to hell.
My nutritionist has done a great job in changing my diet after we established I am allergic to things like gluten - I can't eat pizza pasta and bread. I have lost some weight but my movement is sharper and I feel great.