Always remember omega-3 fats are essential to your, and your children's, health. The best source for omega-3 is fish oil and cod liver oil, as, unlike other sources such as walnuts or flax seeds, it is high in two fatty acids crucial to human health, DHA and EPA. These two fatty acids are pivotal in preventing heart disease, cancer, and many other diseases. The human brain is also highly dependent on DHA - low DHA levels have been linked to depression, schizophrenia, memory loss, and a higher risk of developing Alzheimer's.