Study links rising ADHD and autism diagnoses to broader diagnostic criteria, not overdiagnosis
By
Caroline Williams
Summary
A study of 140,000 people in Denmark reveals that those recently diagnosed with ADHD or autism have fewer genetic variations associated with them than those diagnosed a decade earlier. This suggests that broadening diagnostic criteria — not overdiagnosis — is behind the sharp rise in autism and ADHD diagnoses worldwide over the past two decades, particularly among girls and adults.
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Key quotes
· 3 pulledA study of 140,000 people in Denmark reveals that those recently diagnosed with ADHD or autism have fewer genetic variations associated with them than people diagnosed a decade earlier.
This suggests that a broadening of the diagnostic criteria is behind the rise, but it doesn't support claims that ADHD and autism are being overdiagnosed.
Diagnoses for autism and ADHD have risen up to tenfold around the world over the past two decades, particularly among girls and adults
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