Cod Liver Oil & Omega-3

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Cod liver oil contains omega-3 fatty acids, vitamin D, and is an excellent source of vitamin A.

Vitamin A is an antioxidant and immune enhancer. It is called the “anti-infective vitamin” and has been used to successfully treat the measles virus. Vitamin A has also been shown to be beneficial for autism, but be cautioned: too much vitamin A and vitamin D can be toxic. Liver, kidney, milk fat and cod liver oil are natural sources of vitamin A. While it is added to milk, infant formula and breakfast cereals, it is the palminate form of vitamin A and it does not offer the same benefits as the natural form.

Dr. Mary Megson, a pediatrician from the US, has used vitamin A therapy on her patients with autism with exciting results. She reported patients started speaking more frequently and clearly than before. Others made gains in eye contact, which suggested this may be related to better eye rod function.

Dr. Megson also showed that certain children susceptible to autism are genetically at risk from a G-alpha protein defect. Dr. Megson theorized that susceptible children regress with wheat exposure followed by the exposure to the measles antigen and then the pertussis toxin. This sequence takes these susceptible children into a disconnect of the G-alpha protein pathways. The retinoid receptors’ pathways are critical for vision, sensory perception, language processing and attentiveness. If your child is doing sideways glancing, it may be an indicator of poor rod function and an indicator of a G-alpha protein defect. Please refer to Dr. Jaquelyn McCandless’ book and your physican for more information.


  • The Merck Index 12th Ed., Merck & Co., Whitehouse Station, NJ (1997) entry 10150 pg 10150.
  • Mary N. Megson, M.D., F.A.A.P., The Biological Basis for Perceptual Deficits in Autism: Vitamin A and G Proteins, audiotape of a lecture presented ar rhe DAN! Conference in Cherry Hill, N.J., October 1999.
  • Megson, M.N., “Is Autism a G-alpha protein defect reversible with natural vitamin A?” Med. Hypotheses (200) 54 979-983s.
  • McCandless, J., Children with Starving Brains 3rd Edition 2007, p 121-122.


Autism Canada does not endorse treatments, interventions and therapies but lists them so people can make informed choice.  This site is for information purposes only and is a starting point for readers to look into options that may fit or resonate.  Remember, therapies for autism, like any condition, should be discussed with a trusted medical practitioner or certified therapist before use.

All information, data and material contained, presented or provided here is for general information purposes only and is not to be construed as reflecting the knowledge or opinions of Autism Canada, or as providing legal or medical advice. All treatment decisions should be made by the individual in consultation with a licensed health care provider.

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