His book, also recommended by Nassim Taleb, is Free The Animal.
I likely would not have done much beyond a simple low carbohydrate, Paleo / Primal diet—combined with intermittent fasting, some supplementation of fat soluble vitamins and a mineral or two, and brief workouts at the gym—if it had worked as anticipated once I had dropped from the 235-240 down to 175 in the first couple of years. But I didn't feel right. Cold hands & feet, mostly. A dulling of the sheen on the thing. Less well being, not more. Back at around 185 I felt better, kinda ideal, actually. Anyway, that's when other troubles began. I took up the Leangains protocol with Martin Berkhan, but due no fault of his, of course—and I was making good progress—I injured myself pretty badly and worlds came tumbling down. In spite of a desire to manage it better, recurrences of the thing over the next two years just kept me out of much of the game, both physically and mentally.