I agree with Dr. Tefft on many of the ideas and concepts presented in his book, however, as another reviewer pointed out, the book is poorly written, has terrible editing and lacks cohesion. Dr. Tefft begins by taking a very scientific approach to personalized nutrition, but then takes a u-turn into what seems to be an infomercial for the latest multi-level marketing scheme. (Check out the website listed in the book and that will further illustrate this point http://www.dragondoor.com ) He lays out a great foundation and argument for why all of the scientific and laboratory typing is necessary for optimum nutrition and health, then abruptly dumps all of that for the "better" and "simpler" testing developed by Personal Nutrition and further improved upon by his own organization, The American Society for the Advancement of Personalization (ASAP). This would be fine, except for the fact that it doesn't provide greater personalization, which is supposed to be the point.

Throughout the book Dr. Tefft warns of "one size fits all" nutrition and generalizations, but by the middle of the book he abandons all science and runs headlong into Eastern philosophy and mysticism, mixed with pseudo science and then train wrecks into his own hugely generalized "personal nutrition" plan for you. As another reviewer noted, the endocrine typing is very different from what was done by that typing plan's originator, as is the blood typing. Don't get me wrong, there actually is some good info in this book, but you need to be a discerning reader to find it. The problem is, if you are discerning enough to know what the truths are, then you probably don't need this book.

If you are a person who eats mostly junk food and has no idea what nutritious food is, then you would benefit from learning the basics in this book, i.e. trans fats are bad, don't eat too much sugar, cut processed foods out of your diet, limit caffeine and alcohol consumption, limit your intake of saturated fats, increase consumption of organic fruits, veggies and whole grains, eat lean proteins and especially fish, get your Omega 3's and 6's, drink plenty of pure filtered water and (...) exercise. All of those things and other sound advice are in this book, but the personalization to the level I was hoping to find, just isn't there. Dr. Tefft doesn't even have the reader take body fat percentage into account when calculating BMR, and he barely addresses physical activity in any practical or applicable sense.

At the end of the book, you are offered the opportunity to call and join Tefft's organization and spend $150 for a pH saliva and urine test and hair analysis. I don't know what information they provide on the hair analysis to judge how beneficial their analysis would be, but the pH tests are not of much benefit. Everything you eat or drink affects the pH in your saliva and urine from hour to hour. There are saliva tests which are very telling, but pH at one moment in time is not one of them.

To truly personalize your nutrition, it is going to take more than what is offered here. More variables need to be taken into account. Tefft has simply come up with his own "box" to put us in, but tries to disguise it as "personalized". Be a critical reader, do your research, read the actual books about the body type diet, the blood type diet, and books like "Burn the Fat, Feed the Muscle" by Tom Venuto, Udo Erasmus' "Fats that Heal, Fats that Kill" and as many other great resources as you can find. Then, take the good from them and apply common sense and what laboratory science (testing) is currently available to determine how your body handles nutrients and what is missing from your body. I wish that Teftt had done all of the hard work for us, but he fell short in my opinion. I was really disappointed in the conclusions in this book. I am still looking for sound answers on how to truly personalize my nutrition.