Unfortunately, all blueberries have not been created equal. Blueberries grown in organic conditions will contain higher antioxidant levels than those blueberries that have been sprayed repeatedly with harmful pesticides. In fact, blueberries sprayed with these chemicals actually cancel out the benefits of the blueberry.

Furthermore, recent studies have linked such conditions as ADHD with the ingestion of insecticides. The best way to avoid pesticides is to purchase locally-grown organic products. You may even opt to grow certain fruits and vegetables yourself. If so, be sure that the seeds you use have not been genetically altered, and the soil has been treated properly.