Up to 7 % of school - age children currently struggle with ADHD . Out of 135 middle - aged people who were diagnosed with ADHD as children . People with ADHD struggle with higher divorce rates , substance abuse .
Three to 7 % of school-aged children currently struggle with ADHD . Study followed 135 middle-aged men who were diagnosed with ADHD as children . Men with ADHD struggle with higher divorce rates , substance abuse .