If you are looking for a weight loss book which will cover all the important aspects of weight loss then you are at the right place. If you read The 4-week diet you can learn everything you need to know about metabolism, healthy food ingredients, how your body reacts on different diet plans. It is not based only on the explanation of different diets, but it takes a more comprehensive approach to weight loss. I tried different techniques to lose weight, but that didn't work well until I read The 4-week diet and saw where I was making a mistake. The 4-week diet was an eye opener.