"Wanting or needing to lose weight? The answer is not a pill, medication, or surgery. The answer is a nutritional one that might surprise you. Dr Colbert, who has been practicing medicine for 30 years, has taken his nutrition, cancer treatment, and weight loss training to a whole new level. Colbert not only helps you lose weight, he helps you plan out a healthy life that you can enjoy!"-- Provided by publisher.

Part one: What the Keto Zone diet is -- Meeting a real need -- Looking back at history -- Rise of the new epidemics -- Overview of the Keto Zone diet -- Benefits of being in the Keto Zone -- Part two: Why the Keto Zone diet works -- The Keto Zone and your cholesterol -- The Keto Zone and your carbohydrates -- The Keto Zone and your fat -- The Keto Zone and your protein -- The Keto Zone and your appetite hormones -- Part three: How to put the Keto Zone diet to work for you -- Putting your plan into action -- Know where you are aiming -- Go shopping for the right ingredients -- Get in the Keto Zone -- Stay in the Keto Zone with the right menu plans -- Discover your KCL number to maintain your ideal weight -- Conclusion -- One last word for those over thirty.