The human brain is approximately 60% fat. Fatty acids (e.g., DHS, EPA, omega-3) are needed to build nerve endings. Some psychiatric and neurological disorders are linked to lack of omega-3 (e.g., depression—more girls, ADHD—more boys, bipolar disorder, schizophrenia). (Gurian, Michael, PhD, and Patricia Henley, with Terry Trueman. Boys and Girls Learn Differently! CA: Jossey-Bass, 2001, pp 86-89)