This book was amazing. Truly well-researched and informed. I liked the way the book blended the knowledge of an athlete paired with up-to date nutritional knowledge.
I don't think there is any evidence against this diet. The knowledge of fats, especially the omega-3's, is too new to have much against it. I appreciated how he was aware of FDA recommendations and sometimes agreed and sometimes disagreed. For instance, he agreed that saturated fat should be less than 10% of daily diet, but disagreed about the amount of dairy that was necessary and about the amount of carbohydrate.
It did seem like the paleo way of eating broke down after intensive bouts of excercise such as the tour de france. In those cases carbs, fats and everything to restore energy seemed truly necessary. It amazed me how the book supported my intuition that the way one needs to eat when excercising intensely is totally different than the way one would eat when not excercising intensely. It must have something to do with how your body processes carbohydrate depending on your glycogen stores.
Basically, in general, cordain advocates eating a diet high in protein with unlimitted fruits and veggetables. Nuts are OK as an additional snack, but peanuts are legumes not a nut. I was impressed with this method of eating because it has been the only breakfast that did not leave me hungry for hours. As mentioned before, I was also impressed with how he blended agreement and disagreement with the FDA and his incorporation of the now widely accepted research on omega-3s. I would recommend this book as recommended reading to anyone who is not fully satisfied with the new FDA food pyramid. Even if the diet does not work for you, Cordain's insights and way of explaining things can provide ideas for adding variety to your diet and can help you understand how it is easier to eat the now 9 FDA daily recommended servings of fruits and veggetables. You can't do it by counting up to nine, you have to think "fruits and veggetables are unlimitted" and prefer fruits and veggies to carbs on most occasions.
I was also impressed with Cordains knowledge of osteoporosis and his explanation of how eating fruits and veggetables by creating a net base environment could prevent the body from usinig bone calcium as a buffer to balance PH of the body. All in all this book was wonderful, even though I would recommend reading the paleo diet first. Although, I do fear that this diet is the worst diet for the environment ever (something Cordain never mentions), it has been the first diet that substantially helped my concentration and has improved the health of my skin and level of dehydration. I still have many modifications to make before I am able to fully do it and get enough calories and am still concerned with its impact on the environment. However, all in all, I would say this is one of the best, most balanced, most informed books on dieting that I have ever read and would recommend it to aspiring athletes or anyone who has trouble or wants another perspective on the FDA food pyramid or to better understand current research on healthful eating.