In my answer to you on why parents and some doctors thought that childhood vaccines might be one of the potential causes of autism is because they used to contain a mercury-based preservative called thimerosal. While no studies showed a link between any harmful side effects and the thimerosal in vaccines, the American Academy of Pediatrics and the Public Health Service agencies decided to remove thimerosal from childhood vaccines..
According to research there have been studies showing that methyl mercury, found in nature and even in many fish that we eat, can have harmful side effects resulting in intellectual and mental health problems — but not autism.
However, some doctors and researchers drew the conclusion that the different type of mercury in childhood vaccines must also cause a similar side effect and may result in autism. However, there's no good scientific evidence to show that there's any relationship.
Numerous studies conducted across the globe have tracked autism statistics both before and after the removal of thimerosal from childhood vaccines. The results show that there was no decrease in cases of autism after the vaccines were ch
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