What Causes Autism?
- 1. 'Autism Spectrum Disorder Fact Sheet.' _National Institute of Neurological Disorders and Stroke_, U.S. Department of Health and Human Services, www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Autism-Spectrum-Disorder-Fact-Sheet#3082 5.
- 2. 'What Is Autism Spectrum Disorder?' _Centers for Disease Control and Prevention_, Centers for Disease Control and Prevention, 25 Mar. 2020, www.cdc.gov/ncbddd/autism/facts.html.
- 3. 'Autism Causes.' _Southwest Autism Research & Resource Center (SARRC)_, 2 Oct. 2019, www.autismcenter.org/autism-causes.
- 4. 'What Causes Autism?' _Autism Speaks_, www.autismspeaks.org/what-causes-autism.
- 5. 'Autism Causes.' _Southwest Autism Research & Resource Center (SARRC)_, 2 Oct. 2019, www.autismcenter.org/autism-causes.
- 6. 'Large Study on Parent Age & Autism Finds Increased Risk with Teen Moms.' _Autism Speaks_, www.autismspeaks.org/science-news/large-study-parent-age-autism-finds-increased-risk-teen-moms.
- 7. Gardener, Hannah, et al. 'Prenatal Risk Factors for Autism: Comprehensive Meta-Analysis.' _The British Journal of Psychiatry : the Journal of Mental Science_, U.S. National Library of Medicine, July 2009, www.ncbi.nlm.nih.gov/pmc/articles/PMC3712619/.
- 8. 'Key Findings: Autism Is Associated with Amount of Time Between Births._' Centers for Disease Control and Prevention_, Centers for Disease Control and Prevention, 27 Aug. 2019, www.cdc.gov/ncbddd/autism/features/time-between-births.html.
- 9. 'Key Findings: Opioids Prescribed Just Before Pregnancy Associated With Autism.' _Centers for Disease Control and Prevention_, Centers for Disease Control and Prevention, 27 Aug. 2019, www.cdc.gov/ncbddd/autism/features/kf-opioids-pregnancy-autism.html.
- 10. 'Autism Spectrum Disorder (ASD): Causes, Symptoms, Treatment & Outlook.' _Cleveland Clinic_, my.clevelandclinic.org/health/diseases/8855-autism.
- 11. 'Autism Spectrum Disorder.' _Mayo Clinic_, Mayo Foundation for Medical Education and Research, 6 Jan. 2018, www.mayoclinic.org/diseases-conditions/autism-spectrum-disorder/symptoms-causes/syc-20352928.
- 12. 'Autism.' _National Institute of Environmental Health Sciences_, U.S. Department of Health and Human Services, www.niehs.nih.gov/health/topics/conditions/autism/index.cfm.
5. Spacing of Pregnancies
Babies are more likely to have autism if their mothers gave birth to another child less than 18 months earlier. Babies are also at higher risk of autism if they’re born more than 60 months after their mothers previously gave birth. These children may have more severe autism symptoms.
Birth spacing isn’t associated with other developmental disabilities. Fertility issues and unplanned pregnancies linked to birth spacing don’t appear to be associated with having a child with autism.8‘Key Findings: Autism Is Associated with Amount of Time Between Births.’ Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, 27 Aug. 2019, www.cdc.gov/ncbddd/autism/features/time-between-births.html.
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