ADHD

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Causes and Risk Factors

ADHD tends to run in families. More than 20 genetic studies provide evidence that ADHD is an inherited disorder. At least 2 genes have been associated with the disorder. Most children with ADHD have a close relative who also has it. The National Institute of Mental Health reports that about one-third of fathers who suffered from ADHD during childhood have children with it. Children with affected parents are three times more likely than other children to develop the dis...Read the full article