Phosphatidylethanolamine (PE) has an antioxidant effect by itself or in the presence of tocopherol. Due to this antioxidant action, it plays a role as an intracellular storage of docosahexaenoic acid (DHA) which is preferentially taken up by PE. Plasmalogen-type PE(P-PE)present in the brain protects from DHA radical damage more strongly by the vinyl ether bond in its structure. Brain PE produces N