中国人炒菜总喜欢多放点味精，可是，最近的一项研究表明，吃太多的单钠谷氨酸（味精）有可能让你失明。日本弘前大学的研究人员发现，如果在日常饮食中给老鼠添加大量的味精，老鼠的视力会下降，视网膜也会变薄。此前已经有研究发现，直接将这种物质注入眼睛会引起神经损伤。 Chinese cooking always likes to put more MSG, however, a recent study shows that eating too much monosodium glutamate (MSG) may make you blind. Researchers at Hirosaki University in Japan found that if rats were given a large amount of MSG in their daily diet, their eyesight would drop and their retina thinner. Earlier studies have found that injecting this substance directly into the eye can cause nerve damage.