A University of British Columbia study looked at the prescription records of almost one million B.C. schoolchildren over an eleven-year period and found that kids born in December were 39 percent more likely to be diagnosed with ADHD than classmates born the previous January. The reason? December kids entered the same grade nearly a year younger than their January counterparts—they were eleven months behind in brain development. They were being medicated not for a “genetic brain disorder” but for naturally delayed maturation of the brain circuits of attention and self-regulation.[7]
