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the claim
Autism spectrum disorder prevalence is genuinely increasing in the population
the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against
Is it true that autism spectrum disorder prevalence is genuinely increasing in the population?
Yes. While recorded prevalence and reported case numbers of autism spectrum disorder have risen dramatically, researchers and epidemiologists remain divided on how much of this increase represents a genuine epidemiological rise versus improved ascertainment, expanded diagnostic criteria, and diagnostic substitution.
Verdict: SUPPORTED · 8 sources for, 0 against · Last checked
The analysis
Judged against the evidence record for claims of this kind.
Evidence for · 8
Reports that ASD prevalence has risen sharply over recent decades.
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OpenAIRE: Determinants of Autism Spectrum Disorder. (2026). OpenAIRE. https://doi.org/10.71189/jim/2026/v02n03a05
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More for · 7
Notes that ASD prevalence has risen sharply over the past two decades.
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OpenAIRE: McCullough Foundation Report: Determinants of Autism Spectrum Disorder. (2025). OpenAIRE. https://doi.org/10.5281/zenodo.17451259
Documents a marked increase in recorded ASD prevalence while highlighting diagnostic substitution and broadened definitions.
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Yoo, H. (2013). Recent Increase in Autism and ADHD: True or Inflated?. peer-reviewed literature. https://doi.org/10.3346/jkms.2013.28.7.974
Examines whether a worldwide rise in incidence is contributing to prevalence increases.
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Watkins, L. & Angus-Leppan, H. (2022). Increasing incidence of autism spectrum disorder: are we over-diagnosing?. peer-reviewed literature. https://doi.org/10.1108/aia-10-2021-0041
Provides Global Burden of Disease estimates showing modest increases in age-standardized prevalence rates for ASD.
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M, L. (2026). Trends in the age-standardized prevalence of neurodevelopmental disorders in South America, 1990-2023.. peer-reviewed literature. https://doi.org/10.1055/s-0046-1820532
Tracks rising age-standardized prevalence and DALYs rates for ASD globally and in China from 1990 to 2021.
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Y, H., Y, Y., M, Z., P, Y., J, W., L, F., X, G., T, Z., M, T., C, S., & L, W. (2026). Global and regional insights: unravelling the epidemiological factors and burden of autism spectrum disorders with a focus on China from 1990 to 2021.. peer-reviewed literature. https://doi.org/10.1136/bmjpo-2025-004048
Notes cross-national ASD variations but states prevalence remained relatively stable in some areas, attributing variations partly to diagnostic capacity.
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J, W. (2026). Divergent Trajectories of Youth Mental Health in Emerging Economies: A Global Burden of Disease Analysis of Anxiety and Autism Spectrum Disorders in BRICS Nations (1990-2030).. peer-reviewed literature. https://doi.org/10.2147/prbm.s598402
Analyzes global GBD data showing an increase in age-standardized prevalence rates and total prevalent cases of ASD.
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H, Z., W, Y., F, Z., L, S., Y, Z., & P, L. (2025). Global, Regional, and National Burden of Autism Spectrum Disorder: Trends and Decomposition Analysis From 1990 to 2021, and Projections for 2045.. peer-reviewed literature. https://doi.org/10.62641/aep.v53i6.2029
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What does the evidence say?
Judged against the evidence record for claims of this kind.
Receipt History
first checked06 Aug 2026
judged → SUPPORTED · 8106 Aug 2026
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