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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    • Dr. Steve Chaney

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      Dear Tiffany,
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Posted September 20, 2016 by Dr. Steve Chaney

What Is Side Stitch Pain And How Do You Treat It?

Author: Julie Donnelly, LMT –The Pain Relief Expert

Editor: Dr. Steve Chaney

side stitch painSide stitch pain feels like a pin is being pushed into the muscle between your ribs – and it hurts!  In fact, it’s enough to make you stop running if you’re out exercising. Or you’ll take very shallow breaths if you are suddenly attacked by a side stitch pain.

What Causes Side Stitch Pain?

The most common cause of side stitch pain is a spasm in your intercostal muscles , the tiny muscles that attach your ribs together.

When you take a breath in, your external intercostal muscles contract to make your rib cage expand, and your internal intercostal muscles contract so you can draw your ribs together and force the air out of your lungs.  This is a smooth movement until you add something like heavy coughing or rapid, deep breathing.

If, for example, you are having an allergic reaction to leaves molding in the fall or you have bronchitis or a post-nasal drip, you may have bouts of uncontrolled coughing.

Or, if you are an athlete, you may be panting after a challenging workout or run.

In both cases you are rapidly opening and closing your rib cage as your body quickly draws in more air into your lungs.  This rapid and repetitive movement can cause a spasm to form in your intercostal muscles. The spasm, a tiny knot in the muscle fibers, prevents those fibers from expanding as you try to draw in your breath.  And you feel the muscle tension as a side stitch pain.

Treatment For Side Stitch Pain

side stitch pain treatmentRelief from side stitch pain is as simple as 1,2,3. Best of all, it gives immediate pain relief so you can get on with your activities.

Step 1: Using your fingertips, press directly into the side stitch pain point. Use your opposite hand to add strength to your movement.

Step 2: Hold the point for 30 seconds and then take a slow, deep, breath so your rib cage expands fully.

Step 3: Repeat this 2-3 times.

This simple treatment stops side stitch pain as soon as it happens so you can get back to breathing easily again. It’s easy to self-treat when you have just a little direction of where to go to find the pain, and how to do a self-treatment.

You can discover how to eliminate pain quickly using my book, Treat Yourself to Pain-Free Living.     This book is a “how to guide” to the body, and will save you time and money, and most importantly, give you relief!

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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