For years experts have been telling us what to eat and what not to eat. Fat, they told us, was the enemy. Then it was salt, then sugar, then cholesterol...and on it goes. People listened and they lost - but not their excess fat. What they lost was their health and waistlines. In this scientific and revolutionary book, based on Nobel Prize-winning research, medical visionary and former Massachusetts Institute of Technology researcher Dr. Barry Sears makes peak physical and mental performance, as well as permanent fat loss, simple for you to understand and achieve.