ADHD Information

Important ADHD Facts

  • The cause of ADHD is unknown,9 but scientists classify it as a neurobiological disorder
  • ADHD is a medical condition and not the result of poor parenting, poor nutrition, food allergies, or eating too much sugar9
  • ADHD is considered to be one of the most common psychiatric disorders in children
  • Approximately 80% of children diagnosed with ADHD will continue to show symptoms into adolescence and approximately 65% will show symptoms into adulthood.10 Learn more about the genetic link of ADHD
  • ADHD is not diagnosed through laboratory tests or blood counts, but rather is defined by certain characteristic behaviors uncovered through evaluation by a qualified medical professional9

Prevalence of ADHD in Childhood

  • ADHD is one of the most common psychiatric disorders in school-aged children4
  • The American Psychiatric Association (APA) estimates that 4% to 12% of school-aged children have ADHD4

Prevalence of ADHD in Adults

The prevalence of ADHD in adults in the United States is approximately 4%.11 If there are 280 million people in the United States, this translates into about 8 or 9 million adults with ADHD, of whom less than 1 million have been diagnosed and treated.11


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