Omega 3's are fatty acids that are essential to cell makeup and are found in the bloodstream and heart. A study in England found a correlation between low levels of omega 3's in the bloodstream and increased struggles with learning and behavior in school. In a separate study, researchers added fish oil (omega 3's) to the diets of children struggling with learning difficulties and showed improved self-esteem, memory, perception, and reading and writing skills after six months. More studies have been done with similar results.