Over two million people worldwide are already experiencing the health and performance benefits of the Zone diet. Based on the hormonal consequences of food rather than caloric content, the Zone treats food like a powerful drug. Properly administered, this drug allows you to maintain peak mental alertness throughout the day, increase your energy, and reduce the likelihood of chronic disease - all while losing excess body fat. Now, in this essential new Zone reference guide, author Barry Sears, Ph.D., provides you with the Zone resources and Food Block information you need to make every meal you eat a Zone meal.