Essential fatty acids are vital in metabolism, formation of cell walls and tissue repair. They play an important role in maintaining the health of the heart, liver and brain. Since the body cannot manufacture EFAs, they must come from the diet. The most common supplemental sources of essential fatty acids are fish oils, but for those wishing to avoid fish products there are other oils, such as flaxseed and evening primrose oil, these are are rich sources of essential fatty acids. The fatty acids found in fish oil facilitate the speedy growth and development of the ever changing child’s brain. BBC Science Item - Fish Oil