The function of
chemicals in the brain that help regulate attention and activity (dopamine and
Differences in function of some of the areas of
the brain that affect attention and impulse control.
A mother's use of cigarettes, alcohol, or other drugs during pregnancy may increase the risk for ADHD. Also, exposure to lead may cause symptoms associated with
Although many parents believe
that foods with sugar and food additives make their children more hyperactive,
these foods have not been shown to cause ADHD.2
A study by the
National Institute of Mental Health found that certain parts of the brains of
children with ADHD develop normally but about 3 years later than in children
without ADHD.3 This may be why some children seem to
grow out of the disorder.
Some people have
misconceptions about ADHD, such as that children with
ADHD are lazy or dumb. Talk with a doctor about questions or concerns you have
about these issues.