Do Immunizations Cause Autism?
Scientists are getting closer to unlocking the mystery behind the causes of autism. But so far, modern science has failed to identify a cause. There are many theories, but none has yet been proven conclusively. The controversial theory that the use of thimerosal, a mercury-based preservative that was once used in the MMR (measles, mumps and rubella) vaccine, could be the cause has been shown to have no scientific link. Autism researchers say that its merely coincidence that symptoms of autism tend to become most observable around the same age that children receive immunizations. Numerous studies worldwide have shown that the relationship between vaccines and autism, if any, is not one of cause and effect. It appears that there may be a variety of environmental and genetic factors in several different combinations that can lead to the disorder. Several federal agencies, including the Centers for Disease Control and Prevention (CDC), the National Institutes of Health and the Food and Dru
