Purdue University researchers have found that boys with low blood levels of essential omega-3 fatty acids, have a greater tendency to have problems with behavior, learning and health consistent with attention deficit hyperactivity disorder or (ADHD).  This is a great read for why the foods mothers feed their children is messing with their heads.

After Purdue's earlier study, better studies have been conducted emphasizing actual changes in the essential fatty acids ratio between Omega-6 and Omega-3. This study is even a better read: Omega-3 Fatty Acid Treatment of Children with Attention-Deficit Hyperactivity Disorder