Researchers at Children's Memorial Hospital and Northwestern University looked at 70 studies on diet-based treatments for ADHD.
Replacing foods such as processed meats and soft drinks with healthy choices seemed to help improve symptoms. Those include fish, vegetables, fruit and whole grains.
Researchers also say omega-3 fatty acid pills are also worth considering. But they also warn that a diet should not be a lone treatment but merely a supplement to other proven therapies such as medication.