Lecithin contains 23% Phosphatidylcholine, which comprises a major portion of all cell membranes. It also has been shown to support liver function and cardiovascular health, as well as benefiting mild memory problems associated with aging. NOW® Lecithin Granules are derived entirely from soybeans. Lecithin is also used to emulsify fats in baking and cooking, enabling them to be dispersed in water.