Narrative ReviewJournal of autism and developmental disorders2026

Autism and Dementia: A Summative Report from the 2nd International Summit on Intellectual Disabilities and Dementia.

M P Janicki, P McCallion, N Jokinen, F K Larsen, D Mughal, V Palanisamy, F Santos, K Service, A Shih, S Shooshtari, A Thakur, G Tiziano, K Watchman

PMID 40327233

WHAT IT FOUND

This consensus report synthesizes current knowledge on autism and dementia but presents no new data.

It highlights that while autistic adults with intellectual disabilities may face higher dementia risks, the direct link between autism and specific dementia types remains unclear.

What this paper is

This is a summative report from the 2nd International Summit on Intellectual Disability and Dementia, synthesizing existing literature and consensus statements rather than reporting new patient data. It covers broad topics like genetic risk, gut health, and diagnostic challenges in autistic adults, but contains no original methods, participant outcomes, or intervention results. There is no new finding here to change your clinical practice.

The easy way to misread this

Do not treat the statistical associations mentioned in the text, such as the 2.6 times higher prevalence of young-onset dementia in some autistic adults, as evidence from this paper. These figures are citations from other studies included in this review, not results generated by this work.

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The study

Certainty of evidence
Low

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    M P Janicki, P McCallion, N Jokinen, et al. Autism and Dementia: A Summative Report from the 2nd International Summit on Intellectual Disabilities and Dementia. Journal of autism and developmental disorders. 2026.

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