The causes of ADHD are not clear. Genes may play a role, but research also implicates environmental toxins such as lead exposure from old paint or plumbing, and cigarette smoking or alcohol intake during pregnancy.
Parenting does have an effect on children's self-regulating abilities, the same abilities lacking in some kids with ADHD.
A popular belief that eating too much sugar causes the condition has not held up in research.
Dig Deeper in the Diagnosis Dictionary