Mar 09, 2012
Some of the concepts in
this book are not fully scientifically supportable, but the diet may
still make lots and lots of people feel a whole lot better and attain a
much greater level of health! These two things are not mutually
Reasons the claims made about the scientific merit of
the exact food lists provided for each blood type are unconvincing (on
the whole) to me include:
1. I have read more than half a dozen detailed and methodical explanations of why the scientific concepts in
the concepts in this book are not fully scientifically supportable, but
the diet may still make lots and lots of people feel a whole lot better
and attain a much greater level of health! These two things are not
Reasons the claims made about the scientific
merit of the exact food lists provided for each blood type are
unconvincing (on the whole) to me include:
1. I have read more
than half a dozen detailed and methodical explanations of why the
scientific concepts in the 'Blood Type' books are based on sketchy and
incomplete science. While some of the theory makes sense, they found
holes in the theory and the way the food lists have been compiled big
enough to drive buses through. These were not in books which deny the
validity of anything that is not 'mainstream' - quite the opposite in
fact. These were by some of the best health and nutrition authors
around. Their arguments were very compelling (although I don't have the
time to go into them here). There are also numerous articles online that
contain this information which you can find by Googling. The general
consensus is that the author has part of his theory right, but the way
it is being presented as a complete theory with all questions answered
is not correct.
2. Even if it's true that our blood type has an
enormous amount to do with what we should eat, the concept of
biochemical individuality would still mean that there would be just as
many differences between what people with the same blood type would eat,
as similarities. People are remarkably individual on a biochemical
level as the book Biochemical Individuality explains.
members with the same blood type often do well on very different diets.
This illustrates the above principle, and also the concept that
different diets suit you at different times of your life in response to
all sorts of bodily changes, disease processes and so on.
topic of this diet comes up now and then in chat groups and I have only
very rarely heard it discussed favourably - perhaps by a single person?
Most say very clearly that it didn't help them and was a waste of time
The book The Body Ecology Diet: Recovering Your
Health and Rebuilding Your Immunity explains that the blood type diet
books provide valuable clues about which foods may suit us best, but
that it should be considered a theory still in development. The author
points out that:
- The research has not been adapted for those with Candida issues, acidic conditions or other serious immune disorders.
The blood type diet does not emphasise the importance of eating
cultured foods. For example, type Os are advised to cut out brassica
vegetables such as cabbage entirely as they affect thyroid function.
This may make the diet needlessly limited. But all that is needed is for
these foods to be cultured, and they pose no problem! (That is a
MASSIVE MASSIVE oversight for those of us with already very limited
- No protein guide is given for vegetarian type Os and Bs.
- Food combining is ignored.
- All blood types are advised to avoid apple cider vinegar, which is highly medicinal, aids digestion and is alkalising.
Food preparation methods are not discussed which can make some foods
well tolerated. (Soaked almonds and cabbage made into sauerkraut are
very different to raw or roasted almonds and plain cabbage, for
- Lots of foods that feed yeast are recommended on the diet.
- Unfermented soy is recommended, despite the fact this is difficult to digest and unhealthy.
- Dairy is given undue importance and over recommended.
- Wheat may cause problems for all blood types yet it is recommended on this diet for some blood types.
The blood type diet advises avoiding coconut oil, and supports many of
the myths surrounding this excellent food as explained in Know Your Fats
: The Complete Primer for Understanding the Nutrition of Fats, Oils and
- No distinction is made between refined and unrefined oils.
Many of the fruits and vegetables on the allowed lists and the avoid
lists for each blood type do not seem to tally with the author's
experience with patients and for the most part, all the blood types do
well eating the same fruits and vegetables (with the exception of
But this blood type diet book can still improve your health possibly, because:
1. It advises cutting out junk food.
2. It advises choosing higher quality *organic* vegetables, fruit and meats and eggs.
3. It advises upping your vegetable intake.
It advises lots of people to cut out foods such as dairy, grains and
legumes - which are some of the most common food allergens, which most
people have no idea they are allergic to. The lectins in grains and
legumes also cause a lot of problems for many people.
advises lots of people to cut out foods such as grains and legumes -
which are very high carbohydrate. This will lead to easy weight loss for
lots of people.
Considering these 5 factors alone, almost anyone
would benefit from going on this diet. These are 5 pieces of simply
excellent advice! But you would also get many of the same benefits from
following any healthy whole food eating plan or at least any which
avoided recommending grain and legume consumption, as all the Paleo diet
If you do have allergies or a problem dealing with
carbohydrates, or a need for lots of fat and protein in your diet, you
better hope you are a type O though. The basics of the type 0 program
happen to fit me well by chance (though it doesn't at all fit family
members of mine that have the same blood type) but I bet lots of others
that aren't Os do poorly eating such a high carb diet so high in grains
and legumes! (This must be why the author has revised down the amount of
grains it is okay for non-Os to eat, in more recent books.)
The author's belief in the blood type diet concept seems to have escalated to faith, as one reviewer said.
cannot hurt to try this diet for a short time, probably. But there are
far easier ways to go about getting healthy and losing weight that are
nowhere near as enormously complicated, or as needlessly restrictive,
potentially. You might start with a simple book on nutrition and eating
real food such as Real Food: What to Eat and Why or, if you desire to
lose weight as well as improve your health, Eat Fat, Lose Fat: The
Healthy Alternative to Trans Fats.
If you suspect that you may
have an issue with grains and legumes (and/or want to lose weight while
getting healthier), then you might want to read some of the books on the
Paleo diet and try this diet for a while. There are lots of good books
on this topic including The Primal Blueprint: Reprogram your genes for
effortless weight loss, vibrant health, and boundless energy (Primal
Blueprint Series) as well as lots of free information online.
you suspect you have food allergies you may want to have ELISA testing
done, do some pulse testing, go on an elimination diet and then a 4 day
rotation diet. You may also want to look into issues surrounding having a
'leaky gut' which is one of the main causes of food allergies. Suspect
leaky gut if you have been a heavy user of NSAIDs, aspirin, ibuprofen
etc. Books such as No More Heartburn: Stop the Pain in 30
Days--Naturally! : The Safe, Effective Way to Prevent and Heal Chronic
Gastrointestinal Disorders can be helpful in treating this condition.
read about the fats we all need you may want to read Know Your Fats :
The Complete Primer for Understanding the Nutrition of Fats, Oils and
Cholesterol and Deep Nutrition: Why Your Genes Need Traditional Food.
of these books have a solid scientific basis. Eat real food, consider
that you may have hidden food allergies and try to find the diet that
suits YOU as an individual, I say!
At best this book promotes a
very incomplete and flawed theory that only explains one small part of
the science of what we should each be eating and why, rather than the
whole answer. Unfortunately the issue relies on many other factors in
addition to blood type and is far more complicated.
To read about how to best treat environmental allergies and chemical sensitivity I highly recommend Detoxify or Die.
quite enjoyed finding out what blood type I was finally! I'm an O
negative blood type. It always felt weird that I didn't know this.
three stars in this rating are for the 5 excellent diet tips included
in this book, as listed above, plus some of the information on common
allergens in this book. (I read this book and 'Eat Right 4 Your Type'
together and this is a review of them both really.)
Jodi Bassett, The Hummingbirds' Foundation for Myalgic Encephalomyelitis
"blood type" diet is more hype than substance. I am a blood type "A"
eating a blood type "O" diet and doing fabulously. The "Eat Right for
Your Blood Type" thing is just bad science, in a nutshell." Nora
Gedgaudas, author of Primal Body, Primal Mind