This is absolutely HUGE news:
One expert said the study may be a milestone in understanding ADHD.
“This is a very important study as it adds increasing evidence that ADHD is a heritable disease with genetically determined neurobiological underpinnings and adds further evidence that this is a valid mental disorder, often requiring neurobiological interventions [such as] psychopharmacological treatment,” said Dr. Jon A. Shaw, professor and director of child and adolescent psychiatry at the University of Miami Miller School of Medicine.
Brain Studies Show ADHD Is Real Disease – Forbes.com