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Autism and environmental influences: review and commentary
1Developmental Pediatrics, PLLC, Latham, New York 12110, USA.
Reviews on Environmental Health
|September 27, 2007
Summary
Identifying environmental triggers for autism spectrum disorder (ASD) remains challenging due to evolving diagnostic criteria and increased awareness. This review examines recent research on prenatal and postnatal environmental factors potentially linked to autism.
Area of Science:
- Neurodevelopmental disorders
- Environmental health
- Pediatric research
Background:
- Autism spectrum disorder (ASD) diagnosis and criteria have evolved significantly over the last 30 years.
- Increasing documented prevalence of ASD suggests potential environmental contributors, though this may also reflect diagnostic changes and increased awareness.
- Research into environmental exposures as triggers for autism has been ongoing but faces challenges.
Purpose of the Study:
- To provide a historical context for autism research.
- To review and critically analyze research on environmental factors and autism.
- To focus on recently proposed environmental triggers for autism.
Main Methods:
- Literature review of scientific research on autism and environmental factors.
- Historical analysis of diagnostic criteria and prevalence trends in autism.
- Critical evaluation of research methodologies and data interpretation in autism environmental studies.
Main Results:
- Progress in identifying specific pre- and post-natal environmental exposures linked to autism has been slow.
- The increasing prevalence of autism is complex, influenced by both potential environmental factors and changes in case definitions and reporting.
- Proposed environmental triggers for autism are often controversial, partly due to research design and interpretation challenges.
Conclusions:
- Understanding the evolving landscape of autism diagnosis is crucial for interpreting environmental research.
- Critical analysis of research is needed to address the controversial nature of proposed autism-environment links.
- Further rigorous research is required to identify definitive environmental triggers for autism spectrum disorder.
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