你口味变差,吃啥都如同嚼蜡;或者闻不出气味,别人都说香的菜肴你无动于衷;或者皮肤粗糙,摸起来有沙粒感;甚或眼睛发干,一到黄昏就看不清暗处的东西,等等。于是,到医院看病,医生告诉你患上了一种营养性疾病——胡萝卜素缺乏症。胡萝卜素是维生素A的前身,享有维生素A原的誉称。科学家最早从胡萝卜的橘红色色素 You taste worse, eat what is like a chewing wax; or can not smell, people say indifferent dishes you indifferent; or rough skin, feel gritty; or even dry eyes, one can not see the dusk Dark things, and so on. So, to the hospital, the doctor told you suffering from a nutritional disease - carotene deficiency. Carotene is the predecessor of vitamin A, the original reputation of vitamin A. Scientists earliest from the carrot’s orange red pigment