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==How does autism develop?==

==How does autism develop?==

Although no one knows how autism develops, experts have focused on physical causes such as environmental toxins, the vaccine preservative [[thimerosal]], and the diet of both the mother (pre-birth and during breastfeeding) and child.

Although no one knows how autism develops, experts have focused on physical causes such as environmental toxins, the vaccine preservative [[thimerosal]], and the diet of both the mother (pre-birth and during breastfeeding) and child. Recent scientific studies indicate that thimerosal in vaccines does not cause autism.<ref>[http://pediatrics.aappublications.org/content/126/4/656.full C. S. Price et al., "Prenatal and Infant Exposure to Thimerosal From Vaccines and Immunoglobulins and Risk of Autism".  ''Pediatrics'' '''126'''(4):656-64 (2010)]</ref><ref>[http://www.pediatricsdigest.mobi/content/131/1/149.full W. A. Orenstein et al., "Global Vaccination Recommendations and Thimerosal".  ''Pediatrics'' '''131'''(1):149-51 (2013)]</ref><ref>[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257990/ G. A. Poland, "MMR Vaccine and Autism: Vaccine Nihilism and Postmodern Science".  ''Mayo Clin Proc.'' '''86'''(9):869-71 (2011)]: "No credible scientific evidence, however, supports the claim that the MMR vaccine causes autism, and indeed, national medical authorities and scientific professional societies have unanimously denounced that claim"</ref>

Some experts have speculated about [[genetic predisposition]].  

Some experts have speculated about [[genetic predisposition]].