Like vitamins, phospholipids are essential nutrients. They are obtained from oil plants (e.g. soy, rape, sunflowers). Phospholipids are among the most important substances in the human and animal organism, where they have a multiple function: as a source of energy, as physiological agents in metabolism and as emulsifiers for fats. In their physiological function they act as a transport medium and thus control processes in the membranes of the body´s cells. They promote enzyme activity and protect the liver and cardiovascular system against detrimental changes. Being surfactants, they help to emulsify and disperse fats ant thus make them more digestible.