Does the Blood Type Diet Really Work?

Written by Dr. Steve Chaney on . Posted in Food and Health, Issues

Is Eating Right For Your Blood Type A Sham?

Author: Dr. Stephen Chaney

cb43e76f-6bf7-4e82-8fc1-95005d2c5626Does the Blood Type Diet really work? In 1997 Dr. Peter J. D’Adamo wrote a book about the blood type diet called “Eat Right 4 Your Type”. Dr. D’Adamo claims that people with different blood types process food differently, so their blood type determines the type of diet that is healthiest for them. Specifically, he claims that people with:

  • Blood group O are descended from hunters and should consume high protein diets.
  • Blood group A are descended from farmers and should consume a near vegetarian diet – completely avoiding red meats.
  • Blood group B are descended from nomads. They have the most flexible digestive system and can eat the widest variety of foods – even dairy products, which he does not recommend for any of the other blood types.
  • Blood group AB are an enigma and are somewhere between blood group A and blood group B.

It’s an interesting concept. Dietary recommendations are made for populations as a whole, and there is tremendous genetic variation in populations. Because of that genetic variation, there is no perfect diet for everyone. Every knowledgeable health expert will tell you that.

The question then becomes “How do you know what kind of diet is healthiest for you?”

The blood type diet is a very simple system. Your blood type is easy to determine. Once you know your blood type you know what to eat. There’s no guesswork.

Could it really be so simple? Over 7 million copies of Dr. D’Adamo’s book have been sold. Millions of people believe in this concept. So it is only fitting to ask “What is the evidence?”

An Objective Scientific Analysis of the Blood Type Diet

There is no doubt that blood type is related to some human genetic and physical traits, but the important question is whether blood type is related to the health outcomes of different diets – the central thesis of Dr. D’Adamo’s book. A Belgian group lead by Dr. Emmey De Buch did a systematic search of the scientific literature to answer that very question (L. Cusack et al, Am J. Clin. Nutr. , 98: 99-104, 2013).

They identified 1415 scientific articles that had the phrase “blood type diet” in either the title or abstract. Then they begin the elimination process. They eliminated:

  • Studies done in test tubes, cell culture, or animals. Only human clinical studies were included.
  • Reviews, commentaries, letters or opinions. Those contained no original scientific research.

At this point they were down to just 16 published clinical studies. Then they asked which of those studies were designed to test the central hypothesis of the blood type diet. They asked:

  • Did the study start with human subjects grouped according to blood type?
  • Did the study have an intervention in which the subjects were required to adhere to a particular type of diet?
  • Did the study measure a health outcome of the dietary intervention?

Guess what? Only one study met these criteria. Just one! And it was a fairly weak study involving a totally different blood typing system than the ABO blood groups.

The Bottom Line:

1)     There is no scientific evidence supporting the blood group diet. A lot has been written about the diet, but nobody has actually shown that it works. The Emperor Has No Clothes!

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure or prevent any disease.

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Comments (5)

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      Dear Tiffany,
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Shin Splint Treatment

Posted April 18, 2017 by Dr. Steve Chaney

Shin Pain or Shin Splints Caused By Driving

 

Author: Julie Donnelly, LMT – The Pain Relief Expert

Editor: Dr. Steve Chaney

Driving and shin pain happens to many people. Fortunately, relief is easy to get with just a few minutes of focused self-treatment.

If you drive long distances you are repetitively straining the muscle that runs down the outside of your shin bone. The muscle called tibialis anterior spans from below your knee along your shin bone and inserting into your arch.  It can become so tight that the fibers will begin to pull away from the bone, a condition called “shin splints.”  This is a painful condition and is easy to fix.  Continue reading for

Shin Splint Treatment You Can Do Yourself

shin splint treatmentTo find the muscle, press your fingers on the thick muscle that is just to the outside of your shin bone. Pick up the front of your foot, and then press down, like you are applying pressure to your gas pedal.  You’ll feel the muscle contracting under your fingertips.  As you are driving for hours, the muscle can get so strained you’ll have shin pain all the way to the front of your ankle.

There are several things you can do for shin splint treatment and relieving the tightness of this muscle. You can use the Julstro Perfect Ball (don’t leave home without it), or a tennis ball which is less effective but will work. Place the ball at the top of the muscle, just below your knee. Then press down hard and slide all the way to your ankle. Curling your toes as shown will help stop the feeling of a cramp in your arch.

You’ll find a tender point about mid-way down the muscle, it may even feel like a bump.  This is the common site of the spasm that is shortening the muscle fibers and causing them to put pressure onto your shin bone. Keep pressing your lower leg into the ball until it doesn’t hurt any longer.  You’ve gone a long way to releasing the tension in the muscle and eliminating the pain.

pain free living bookMy book, Treat Yourself to Pain Free Living , or the Lower Body DVD, demonstrates how to do the treatments easily. If the muscle is really tight, the treatment will be a bit painful, so only apply enough pressure that it “hurts so good.”  You’ll be so glad you took the time to stop and work out the tension in your leg, it will make the rest of your trip safer and a lot more pleasant!  Once you have experienced the success, you will not forget this shin splint treatment.

Wishing you well,

Julie Donnelly

 

 

About The Author

julie donnellyJulie Donnelly is a Deep Muscle Massage Therapist with 20 years of experience specializing in the treatment of chronic joint pain and sports injuries. She has worked extensively with elite athletes and patients who have been unsuccessful at finding relief through the more conventional therapies.

She has been widely published, both on – and off – line, in magazines, newsletters, and newspapers around the country. She is also often chosen to speak at national conventions, medical schools, and health facilities nationwide.

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure or prevent any disease.

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