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Autism Coach

Vitamin D and Autism - An Important Nutritional Support

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A recent research study indicates that approximately 87% of individuals with autism are deficient in Vitamin D.  Vitamin D supplementation may both prevent autism and improve level of functioning in autism.

Researchers are finding Vitamin  D plays many different roles in the body.  Vitamin D:

  • supports and repairs DNA
  • upregulates neurotrophins that stimulate neurological growth 
  • increases the level of glutathione which is deficient in the majority of individuals within the autism spectrum. 
  • improves mitochondrial function/cellular energy production that is frequently comprised in individuals within the autism spectrum.  
  • reduces the body's autoimmune and inflammatory responses that cause the body to attack its own tissues
  • provides neuroprotection against high levels of proprionic acid, which is frequently elevated in individuals within the autism spectrum and can cause neurological damage
  • prevents cancer

The most bioavailable form of Vitamin D is D3, the same form that the body creates when the skin is exposed to sun. 

Vitamin D works most effectively together with Vitamin K, magnesium and zinc. 


1.  Is high prevalence of Vitamin D deficiency evidence for autism disorder?: In a highly endogamous population. Bener A, Khattab AO, Al-Dabbagh MM. J Pediatr Neurosci. 2014 Sep-Dec;9(3):227-33. doi: 10.4103/1817-1745.147574.

2.  Core symptoms of autism improved after vitamin d supplementation. Jia F, Wang B, Shan L, Xu Z, Staal WG, Du L. Pediatrics. 2015 Jan;135(1):e196-8. doi: 10.1542/peds.2014-2121. Epub 2014 Dec 15.

3. Protective and restorative potency of Vitamin D on persistent biochemical autistic features induced in propionic acid-intoxicated rat pups. Alfawaz HA, Bhat RS, Al-Ayadhi L, El-Ansary AK. BMC Complement Altern Med. 2014 Oct 25;14:416. doi: 10.1186/1472-6882-14-416.

4.  Vitamin D and Autism - The Missing Link.  John Cannell, MD, Alternative Medicine, February 2015, 41-43.

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