20 Nov 2019 --- A recent study has found that omega 3 supplements improve attention among children with Attention Deficit Hyperactivity Disorder (ADHD), but only among those with pre-existing low levels of omega 3 in their blood. Conversely, the opposite effect occurred testing children with high blood-levels of eicosapentaenoic acid (EPA), the long-chain omega 3 fatty acids. These children presented negative effects of omega 3 supplementation on impulsivity symptoms. Dr. Carmine Pariante, Senior Researcher from the Institute of Psychiatry, Psychology & Neuroscience at King's College London, tells NutritionInsight that this study advocates for a “personalized approach” in such interventions.