Polyunsaturated fatty acid derivatives are used as medicine or functional food. The present invention relates to the use of 1,2  ̄ derivatives of fatty acids in the treatment or prevention of diseases, the common cause of which is based on changes in cell membrane lipids (with any source), such as changes in the level, composition or structure of the lipids. In addition, it is used to regulate the composition and structure of membrane lipids (or proteins interacting with them) which can cause the reversion of pathological state.多不飽和脂肪酸衍生物作爲藥物或功能性食品的用途。本發明涉及脂肪酸的1,2‑衍生物在治療或預防疾病中的用途,該疾病的常見病因基於細胞膜脂的變化(具有任何來源),例如,諸如所述脂質的水平的變化、組成的變化或結構的變化。此外,用於其中膜脂(或與其相互作用的蛋白)的組成和結構的調節可以引起病理狀態的逆轉的疾病。