People diagnosed with ADHD and autism more recently show lower genetic risk than earlier cases

The rise in the number of cases of attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) always gets quite a bit of attention from both the public and the media.

This has led to the rise of several misinformed theories about the cause.

On the other hand, the increase in the number of people diagnosed has also led to crucial scientific investigations. ...