Why Are Vitamins Named after Letters?維生素為什么要以字母命名？

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We all know that vitamins are essential for our health， but how did they get their names and when were they found in the first place？

我們都知道維生素對健康至關(guān)重要，但它們的名字是怎么得來的？它們是什么時(shí)候被發(fā)現(xiàn)的？

Though humans have always understood there’s a connection between diet and health， it took thousands of years for modern nutrition research to emerge. Then in 1838， Dutch chemist Gerardus Johannis Mulder proposed the existence of a compound he called protein， which he argued played a “principal role” in nourishment. For decades， protein was considered the “true nutrient” for human health， despite emerging knowledge that fruit， vegetables， and milk eased conditions such as scurvy and rickets.

盡管人類一直都知道飲食與健康之間存在聯(lián)系，但現(xiàn)代營養(yǎng)學(xué)研究卻在幾千年之后才出現(xiàn)。（剩余2892字）