ADHD cases have risen considerably in the U.S.

As of 2022, around 1 in 9 children had been diagnosed with attention-deficit/hyperactivity disorder at some point in their lifetimes, according to a study published Wednesday. Roughly 6.5 million children ages 3 to 17 had ADHD that year — up from 5.4 million in 2016.

The study’s lead author, Melissa Danielson, a statistician at the Centers for Disease Control and Prevention, said there are two main reasons for the trend. First, doctors,…