I didn't state that it is the case for obese people. Obviously obese people are not eating to their "type" or they wouldn't be obese. I am talking about the many people in myriad cultures, including the US, that are eating carbs and fruits on a regular basis as a regular part of their diet and remain fit, healthy and at an appropriate weight for their stature and build.

The book does not suggest that the carbohydrate type diet is appropriate if you "love" carbohydrates, otherwise that would be the metabolic type determined for me as I am a carb addict. Rather the book determines from answers to a rather lengthy and detailed list of questions where you fit metabolically and further states that the mix for a diet type be further refined to fit your own unique body chemistry by adjusting along the continuum of your type's carb:protein:fat ratio.