One of the least talked about characteristics of the ketogenic diet is that it's not for everyone. In fact, some people might feel worse on a keto diet. But for others, the keto diet is an absolute life-changer. In the second episode of a series with author Dr. Josh Axe, Dr. Axe and Dr. Amen discuss not only who can benefit from the keto diet, but how it should be used, and how long people should be on it for.