Still others blame the environment (all those chemicals we use). Or diet (yet another thing to blame on processed sugar).
Now a new report from the Centers for Disease Control and Prevention brings up another possibility: improper diagnosis.
The CDC report takes an in-depth look at how children with ADHD came to get the label through a survey of 2,976 families. While in the majority of cases health care providers followed American Academy of Pediatrics guidelines when making a diagnosis, there was still a large number of children for whom these practices weren't followed.
In 18 percent of cases, the diagnosis was done solely on the basis of family members' reports, which is inconsistent with AAP recommendations that information be collected from individuals across multiple settings -- such as a teacher, piano instructor, or sports coach. Additionally, one out of every 10 children was diagnosed without the use of a behavior rating scale that is supposed to be administered.
The study also shows that children are getting diagnosed at an earlier age, with half being diagnosed at age 6 or below: 17.1 percent at age 6, 14.6 percent at age 5, and 16 percent at age 4 or younger.