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The Link Between Blood Type and Autism 


Donna Gates, Autism expert and author of The Body Ecology Diet, has noted how there appears to be a link between autism and blood type. She says that 8 out of 10 of the autism cases she has worked with over the years are Blood Type A. These types tend to share the following characteristics:

  • More sensitive constitutions, weaker immune systems, and a greater tendency to develop disease.
  • Low stomach acid and digestive problems earlier in life, even from birth.

When stomach acid (HCL) is low, protein digestion becomes difficult, leading to a deficiency – regardless of how much protein you eat. These people do better when taking digestive enzymes and fermented food and drinks with meals, especially when consuming animal protein.

Low stomach acid also elevates cortisol levels. Research shows that protein deficiency raises the stress hormone, cortisol. Signs of protein malnourishment in children are poor muscle tone and swollen bellies.

When cortisol levels remains chronically high, your personality is affected, making you feel anxious and more of a perfectionist. You will find it difficult to truly relax and sleep deeply.

Elevated cortisol also depletes your sexual hormones (estrogen, DHEA, progesterone, testosterone), speeding up aging.

  • Low Stomach acid means mineral deficiencies. Minerals are essential for assimilation of protein – and healthy fats are necessary to absorb minerals. Minerals keep your blood slightly alkaline so that viruses, fungi, bacteria and cancer cells do not grow as easily.


Researchers have found that children with autism have inflammation in their brains. Their cytokines, the chemicals produced by the immune system to organize attacks against pathogens, are always switched “on,” causing constant inflammation.

Basically, these kids have infections in their brains and inflammation in the intestines. They also may have picked up a fungal infections from the mother while in the womb, or from the use of antibiotics soon after birth. It makes sense, then, that blood type A children, who are naturally more sensitive to immunological stresses, are more susceptible to developing autism.

Whether a child is blood type A or not, immune function is key to preventing and treating the “brain and gut infections” that characterize autism spectrum disorders. The Body Ecology System of Health and Healing helps to prevent and heal inflammation and infections naturally, whether fungal, viral or bacterial.

This is a dietary approach to just about any health condition, but especially useful with Autism, Asperger’s Syndrome, ADD and ADHD, and other childhood disorders. For more information on The Body Ecology system, which has reversed many cases of autism and other childhood disorders, visit my resource page or read The Body Ecology Diet.

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