I take everything with a grain of salt as they say. Having lived 50 years I have learned to be somewhat speculative. That, and I'm in the health field. Anyway after trying this, I began to realize there seems to be something to it. A lot less aches when I avoid the stuff he says to avoid. Go figure. He also has an audible book same author same topic, and I have that as well -liked it too. This doctor may seem a little unlike any doctor you have heard. But, that's not always a bad thing!