A Link Found Between Autism & Vitamin D Deficiency

Nadia Shanab | autism, general advice, parenting, tips
26 Apr 2015

Up-to-the-minute, the definitive causes of autism haven’t been identified yet. However, two main reasons used to be greatly suspected:

1- Environmental (toxins and exposure to heavy metals) reasons

2- Genetic reasons

3- A combination of the above, since they are related

Now, a new combined environmental and genetic suspect has emerged, supported by series of researches, namely: vitamin D deficiency in prenatal and postnatal babies as well as parents to be. So many papers have been published supporting the theory.

Dr. John J. Cannell M.D. has been researching for decades and studying the link between autism (and other spectrum disorders) and the low levels of vitamin D. In the webinar below you’ll listen to him explaining the findings and then answering parents questions. It is an amazing video to watch/listen to.

Dr. John J. Cannell M.D. also wrote an article in the Autism Asperger’s Digest (issue February-April 2015) is sharing his beliefs about the relation between the low levels of vitamin D and autism.

He recommends: “In order to reduce the risk on ASD, I believe all couples hoping to conceive a child should each take 5,000 IU/day and get as much sun exposure (without burning) as they can.”

Here is another video showing Dr. David J. Clark backing the same theory.

It is true that people are increasingly avoiding the exposure to sunshine for fear of developing skin cancer.

Children with autism were found to have half the levels of vitamin D compared to typically developed children, including siblings. To help reduce/improve the condition of autism, children should get enough sunshine and vitamin D simultaneously.

Dr. Cannell wrote about the relationship between levels of vitamin D and the severity of autism: the lower the levels of vitamin D the more severe the autism.

There are some links below discussing the link between autism and vitamin D deficiency.







It is very easy to find out about the levels of vitamin D of parents to be as well as their babies to come. Ask your health provider for more information.


Don’t supplement yourself and your kids by yourself. Consult with a professional health provider first. Too low doses of vitamin D might have no effect. Too high doses can be harmful. Be safe!

nadia shanab

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