Dr. D'Adamo provides a customized program that works with your genetic makeup to maximize health and weight loss, as well as prevent or even reverse disease. According to Dr. D'Adamo, a host of environmental factors, including diet and lifestyle, dictate how your genes express themselves. With the right tools, you can turn on the good genes and shut down the bad ones. Using family history and blood type as well as simple diagnostic tools, Dr. D'Adamo shows you how to map out your genetic makeup to discover which of the twelve GenoType plans is right for you. Without expensive tests or a visit to the doctor, The GenoType Diet reveals previously hidden genetic strengths and weaknesses, and provides a precise diet and lifestyle plan for every individual.