William Shaw: Heavy Metal Toxicity and Autism

There has been a marked interest in the role of toxic metals in autism and PDD. The potential role of mercury was of special concern because of evidence that the amount of mercury injected into infants and toddlers via childhood vaccinations has exceeded government safety guidelines on both individual and cumulative vaccine doses. Vaccines contain the preservative thimerosal, which is 50% ethyl mercury. Symptoms of mercury poisoning are very similar to those of autism and include stereotypical behaviors, delayed speech, sensory abnormalities, toe walking, self-injurious behaviors, gastrointestinal abnormalities, and cognitive impairments.

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