More or Less: Behind the Stats Bonus episode: The Autism Curve
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May 5, 2025 
Join Joshua Stott, a Professor of ageing and clinical psychology at University College London, as he dives into the striking rise in autism diagnoses. He reveals alarming statistics showing an eightfold increase in the UK, with a possibility of undercounting 1.2 million autistic individuals. The discussion challenges traditional perceptions of autism, examines new definitions, and highlights the complexities of diagnosing older adults versus youth. Stott's insights prompt us to rethink our understanding of autism and its evolving landscape.
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Exponential Rise in Autism Diagnoses
- Autism diagnoses in the UK have risen dramatically, with an 800% increase over 20 years.
- This rise is described as exponential, signaling a major trend change, seen similarly in other European and Anglophone countries.
Autism Diagnostic Criteria Explained
- Autism diagnosis requires persistent difficulties in social communication and restricted, repetitive behaviors.
- These features include social interaction challenges and sensory sensitivities covering a broad heterogeneous spectrum.
Massive Undercounting in Elderly
- Autism diagnosis rates drop drastically with age despite autism being lifelong, revealing massive underdiagnosis in older people.
- Estimates suggest between 440,000 to 1.2 million autistic UK adults remain undiagnosed, especially in the elderly.
