Lutein is a yellow compound found only in plants, which produce it to absorb light. We can get lutein by eating foods like kale and spinach. It is also present in egg yolk. Zeaxanthin, another yellow compound similar to lutein, is found in such foods as corn, yellow bell peppers and saffron. Meso-zeaxanthin is not generally found in food sources, though it can be found in some fish. It is created in the retina from ingested lutein. It can be taken in supplements made with marigold extracts.

As for carrots, it turns out that it’s the leafy green bits on the top that contain the key compounds beneficial to eyesight, rather than the vegetable itself. So next time you’re told carrots help you see in the dark, save them for the rabbit and chop up some kiwi instead!

词汇表 kale （蔬菜）羽衣甘蓝

to degenerate 下降，衰退

supplement 补充物，补充片剂

chemical 化学品

vision 视力

retina 视网膜

tissue 组织

macula 视网膜黄斑

pigment 色素

lutein 叶黄素

zeaxanthin 玉米黄素

meso-zeaxanthin 消旋玉米黃素

sight loss 失明

compound 化合物

saffron 藏红花

to ingest 摄取

marigold extract 万寿菊提取物

测验与练习 1. 阅读课文并回答问题。 

1. True or false? Eating yellow and green vegetables can be harmful to your eyesight. 

【Need glasses? Try kale instead. 视力不好吃羽衣甘蓝试试】相关文章：

★ The city of the future 城市的未来

★ Cyberchondriac 上网自诊狂

★ Double, treble, triple, quadruple 英语中表示倍数的单词

★ 日常英语：办公用语

★ Big Ben and gorilla surprise 维修大本钟，大猩猩生子

★ Clickbait 点击诱饵

★ Do we need to attend lectures? 大学生是否需要听讲座式课程？

★ 'New' wave-like cloud finally wins official recognition “新”型波浪状云首次被列入官方图集

★ Different types of hats 各种帽子的英文说法

★ Retailer, wholesaler, distributor, outlet 几个词的区别和用法