The exact cause of ADHD is not fully understood. There are numerous factors that are associated with the development of ADHD. It may be difficult to avoid these factors, but addressing them may reduce the risk of developing the disorder:
Psychosocial adversity — severe marital conflict, father's criminal behavior, mother's mental disorder, poverty, the child's foster care placement
Complications during pregnancy or delivery — poor maternal health, fetal distress, low birth weight
Mother's use of tobacco, alcohol or other drugs during pregnancy
Lead poisoning — although lead exposure does not account for many cases and many children who are exposed to lead do not develop ADHD
Research shows that particular foods probably do NOT cause ADHD.