Omega 3 fatty acids are fats commonly found in marine and plant oils. The health effects of n-3 fatty acids supplementation are controversial. They are considered essential fatty acids, meaning that they cannot be synthesized by the human body but are vital for normal metabolism. A new study by the University of Oxford has shown that daily supplements of omega-3 fatty acids (Docosahexaenoic acid, or DHA) improved the reading and behavior of under performing children in mainstream primary schools. The researchers worked with children aged between seven and nine who had underperformed in standardized reading tests.