{"id":1661,"date":"2024-11-26T10:00:17","date_gmt":"2024-11-26T09:00:17","guid":{"rendered":"https:\/\/fondation-autisme.org\/?p=1661"},"modified":"2025-09-26T23:26:57","modified_gmt":"2025-09-26T21:26:57","slug":"rising-prevalence","status":"publish","type":"post","link":"https:\/\/fondation-autisme.org\/en\/rising-prevalence\/","title":{"rendered":"Rising prevalence"},"content":{"rendered":"

In most countries, the prevalence of Autism Spectrum Disorders has risen sharply over the past few decades.<\/p>\n

Within OECD countries, the prevalence appears to have increased sixfold over the past 40 years, now affecting approximately 1% of the population<\/b> – though estimates vary significantly across countries and studies.<\/p>\n

Part of this rise seems to stem from improved detection and changes in diagnostic definitions and criteria, particularly between DSM-IV and DSM-5 (DSM: Diagnostic and Statistical Manual of Mental Disorders).<\/p>\n

Whether the increase is primarily due to better detection or a true underlying surge has long been debated within the scientific community and has led to numerous studies.<\/p>\n

Today, the consensus suggests that roughly 20\u201325% of the apparent increase can be attributed to improved detection. However, the remaining 75\u201380% reflects a genuine and dramatic rise in autism over recent decades (Nevison, 2014).<\/p>\n

Among the highest estimates is that of the U.S. Centers for Disease Control and Prevention (CDC), which in 2020 reported that, based on 2016 data, approximately 1 in 54 American children had been diagnosed with an autism spectrum disorder.<\/p>\n

The prevalence of autism spectrum disorders appears to have increased sixfold over the past 40 years, now reaching approximately 1% of the population.<\/b><\/p>\n<\/div><\/div><\/div>

A valuable source among many scientific publications : <\/p>\n

Nevison, C.D. A comparison of temporal trends in United States autism prevalence to trends in suspected environmental factors. Environ Health 13, 73 (2014) <\/p>\n<\/div><\/div><\/div>

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For families<\/b><\/p>\n

The rise in the prevalence of autism spectrum disorders is indeed a reality, even if it is still sometimes questioned or attributed to improved detection and related factors.<\/p>\n

You are, therefore, at the heart of a profound societal shift and deserve the full support and engagement of everyone.<\/p>\n<\/blockquote>\n

<\/i><\/p>\n

Despite some variation in methods and findings, a substantial body of epidemiological research confirms a significant rise in Autism Spectrum Disorders.<\/b><\/p>\n

Moreover, the differences in prevalence between countries cannot be explained by methodological variations alone (Chiarotti et al., 2024), further supporting the hypothesis that environmental factors play a major role.<\/b><\/p>\n<\/div><\/div><\/div>

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