Review of "Fat for Fuel" a book by Joseph Mercola: Fat for Fuel: A Revolutionary Diet to Combat Cancer, Boost Brain Power, and Increase Your Energy One of the most comprehensive guides to the ketogenic diet. Welcome to THE SMART BELLY Blog Enjoy Eating Healthy by Trusting Your Gut Feeling Ketogenic Diet, Cancer Prevention Diet, Brain Cancer Diet The ketogenic diet is very popular these days, and I am often asked for opinions on this radical approach. This diet goes back to D