CDC data shows increase in kids with ADHD

Data from a new CDC report, which was analyzed by "The New York Times," shows 11% of all school-age children have received an attention deficit hyperactivity disorder diagnosis at some point in their lives - a 16% increase since 2007.

Nearly one in five boys in high school has been diagnosed with ADHD, and nearly two-thirds of children with a current diagnosis of ADHD are taking medication for it, like Ritalin or Adderall.

In this segment with Wolf Blitzer, Dr. Sanjay Gupta explains that the self-reported survey may not accurately indicate the number of children with ADHD.

The crux of the issue is that medical records weren't used and no patients were directly examined. The method was to call parents and ask them questions about their children, which can be an unreliable way to gather scientific data.

Sanjay says that doesn't change the larger conclusion that the number of children with ADHD has gone up over the past few decades. It's still unclear to the medical community if the reason stems from more correct diagnosis of the disorder of from more people actually having ADHD.

For more, watch Docs: overuse of ADHD drugs