I know a lady who recommended the book to me a long time ago. She didn't know hers or her hubby's blood type, but was convinced she was A, he an O, because they 'fit' the profiles. His was correct, but she was an O too, and she was very upset because she was mostly a vegan and there was noooo way she was going to start following the meat-eating O plan! So there are definitely some way-wrong scenarios.

Hugo, I was just reading The Paleo Diet by Cordain, if you have it, on pg 91 (in my book anyway) the section on Lectins and Autoimmune Disease in chapter 6 briefly goes into the info that D'Adamo is using to base his plan on. As you can see, it isn't for everyone, but his forum contains as many people vehemently defensive of the ER4YT plan as there are people here defending the low-carb way. Many people there have had nasty health problems resolved by following his guidelines. To each his own!

Amy