Lecithin is a naturally occurring compound found in all cells in nature, plant and animal. It plays a major role in almost all biological processes - including nerve transmission, breathing and energy production. The word Lecithin is taken from the Greek Lekithos, which means "egg yolk". A fitting name for this essential nutrient, the egg is considered a symbol of life, strength and fertility. Lecithin is important for all of these biological functions and more. Our brain is approximately 30% Lecithin. The insulating myelin sheaths that protect the brain, spine and thousands of miles of nerves in your body are almost two-thirds Lecithin. Even the heart has a high concentration of Lecithin. Lecithin is composed of many different components, including Choline, Inositol, Linoleic Acid, Phosphatidylserine, beneficial fatty acids and triglycerides. These valuable constituents of Lecthin are vital for the proper functioning of many metabolic processes. NOW Lecithin Granules are derived entirely from soybeans. Look for other NOW natural products at health food stores nationwide.