Book excerpt: Internationally eminent scientists illuminate the most important scientific aspects of essential fatty acids (EFAs)-from their biochemistry to their physiological consequences in both health and illness. The distinguished contributors integrate a wide range of topics, including the basic biochemistry of EFAs and lipid metabolism, the role of EFAs in the neuronal membrane, the effects of EFAs and lipids in various diseases, and the effects of normal levels and EFA deficiencies on cognition and behavior. The book's consolidation of our knowledge of the biology and metabolism of the EFAs lays the groundwork for dramatic advances in our understanding of these ubiquitous biochemicals and their role in health and illness.