Olfactory Function in Autism Spectrum Disorder Across the Lifespan: A Systematic Review and Meta-Analysis.

AutismJul 15, 2026 (epub)
Clinical ResearchPsychiatry

Isabelle Cullen, Elisa Dal Bò, Peace Maddox et al.

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In 30 seconds

This systematic review and meta-analysis examined olfactory function in 1,580 autistic and 7,698 non-autistic individuals. Autistic individuals demonstrated significantly poorer olfactory performance (g = -0.64), particularly in psychophysical testing (g = -0.58) and informant reports (g = -1.31). The findings suggest pronounced olfactory deficits in autism, especially in childhood.

Key findings

  • Autistic individuals showed significantly poorer olfactory performance than non-autistic individuals (g = -0.64).
  • Psychophysical testing revealed reduced olfactory performance in autistic individuals (g = -0.58).
  • Informant reports indicated even greater deficits in olfactory function (g = -1.31).
  • Moderate deficits in olfactory function were observed in autistic children (g = -0.88).

Why it matters

Understanding olfactory function in autism is crucial for developing age-appropriate assessments and interventions. Clinicians can better support autistic individuals by recognizing sensory processing differences that impact daily life.

Source

Published in Autism. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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AI-generated summaries may contain errors or omissions. Verify clinically important information with the original publication.

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