Genetic Risk of Autism, ADHD Decreased as Diagnoses Increased 

 ADHD in the News 2026-06-11


Key Takeaways: Rates of autism spectrum disorder and attention deficit-hyperactivity disorder (ADHD) have increased in recent decades across multiple populations. A cohort study from Denmark suggested that genetic risks of autism and ADHD have decreased over time among people with diagnoses. These findings suggest that clinical practice and diagnostic criteria have changed over time, researchers said.