What exactly causes ADHD?
Experts are uncertain about the exact causes of ADHD. Research has shown that genetics are likely an important factor, as ADHD may be passed down from parents to children. However, environmental factors, such as nutrition or exposure to lead, may potentially contribute as well. It’s also possible that premature delivery, low birth weight, or similar issues around birth have a role to play. Some research also focuses on whether traumatic brain injury may be a risk factor.