自从我离开上海去美国留学,其间已有整整5年不曾回来过。1993年回到阔别多年的上海度假,没想到几年不见的亲戚朋友不断为我安排宴请,因此频繁进出各大餐厅和家庭宴会。不倒三天,我感到异常疲倦,且头脑昏沉。我立刻警觉到这是异常现象,并判断出是菜里放了味精缘故。因为我是一位味精过敏者。这次,我除了尝到味精的滋味外,也听到国内朋友有关味精可以“补脑”的说法。为了了解味精,一回美国,我立刻到图书馆搜集有关味精的科学资料,研究味精的发现,制作方式和对人体的影响,并 Since I left Shanghai to study in the United States, I have not returned for a full five years. Back in 1993, after many years of vacations in Shanghai, I did not expect my friends and relatives who had not seen me to keep continually arranging dinners for me for several years. I therefore frequent in and out of major restaurants and family banquets. Not falling for three days, I felt unusually tired and dizzy. I was immediately alerted to this is an anomaly, and judged to be MSG put vegetables reason. Because I am a MSG allergy. This time, in addition to taste the taste of MSG, I also heard domestic friends about MSG can “Bunao ” argument. In order to understand MSG, once back to the United States, I immediately went to the library to collect scientific information on MSG, MSG’s discovery, production and impact on the human body, and