How Understanding Can Lead to Permanent Weight Loss. Did you ever wonder why you are overweight no matter what you have tried? What is it that your body is doing wrong? Just what role does heredity play? This book takes the science of obesity and weight loss and breaks it down into easy to read and understand terminology. After reading it you will know what happens to the food you eat. You will understand how your body works and why you are overweight. You will know how to increase your metabolism to burn fat faster, and how to keep it gone. Once you know how your body is working against you, you will be able to make some changes that will get it to work for you.