二十二碳六烯酸和脑的健康

Docosahexaenoic Acid and Its Effects on Brain

二十二碳六烯酸（简称ＤＨＡ），是鱼油中最重要的生理活性成分之一，它对人脑的健康起重要作用．本文回顾了近几十年关于ＤＨＡ的研究，叙述了人体内ＤＨＡ的两个来源途径，尤其是：ＤＨＡ以磷脂形式广泛地存在于脑细胞和神经细胞中；实验动物测试记忆能力和脑中ＤＨＡ水平相关；ＤＨＡ对脑发育极为重要；ＤＨＡ对视网膜功能的影响及防治老年痴呆症具有关键作用．

Decosahexaenoic acid(DHA) is one of the most important ingredients in fish oil which has physiological effect on the health of man's brain. Research done on DHA in the last decades are reviewed. This paper deals with twosources from which human being obtains DHA. The followings are now of noting. DHA commonly exists in the brain cells and nervous cells in the form ofphospholipids. The measured ability of study and remember of the experimentalanimals is related to DHA level in their brain. DHA is important to the evolutionof brains.DHA plays a key role in the retina and in the control of senile dementia.