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BBC隨身英語: 視力不好?吃羽衣甘藍試試

zlxxm 于2019-11-01發布 l 已有人瀏覽
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吃胡蘿卜真的可以幫助保護視力嗎?保護和提高視力的秘密到底是什么?吃保健品或多吃某些食物能有幫助嗎?本期《隨身英語》介紹對人眼和視力有益的食物。
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Need glasses? Try kale instead

視力不好?吃羽衣甘藍試試

Do carrots really help you see in the dark? What about kiwis or kale? Can eating certain foods improve your eyesight or prevent your eyes degenerating? Perhaps we should all be taking supplements to benefit our vision? Research in both the US and Ireland has shown that supplementing the diet with certain key chemicals can significantly benefit your vision. These can be taken as supplements but they are also found widely in many green leafy plants and green and yellow fruit and vegetables.

胡蘿卜真能明目嗎?獼猴桃和甘藍呢?通過吃某些食物能增強視力或者防止視力下降嗎?我們是不是應該都吃點以便對我們的視力有益呢?美國和愛爾蘭的研究都表明,在飲食中加入某些關鍵的元素可以顯著改善視力。這些成分可以養生片劑補充,但它們同樣廣泛存在于許多綠葉植物、綠色和黃色的果蔬中。

The retina is the part of our eye that contains cells sensitive to light. The most delicate area of this tissue - the macula - is protected from harmful blue and UV light by yellowish 'macular pigment'. This acts like sunglasses, blocking the damaging light. It comprises three pigments - lutein, zeaxanthin and meso-zeaxanthin.

視網膜是我們眼睛里的一部分,它有一些對光敏感的細胞組成。視網膜最脆弱的地方是黃斑——“黃斑色素”能保護黃斑不受藍光和紫外光的傷害。這就像太陽鏡一樣,可以擋住對眼睛有害的光線。它由三種色素組成——葉黃素,玉米黃質和中玉米黃質。

A research team led by Professor Nolan in Ireland has recently completed a year-long trial investigating the benefits of taking supplements of macular pigments. 100 participants took part in the experiments. The results showed that by taking lutein, zeaxanthin and meso-zeaxanthin, there was a significant improvement in the protection of the macula, as well as in overall eyesight. There was also some evidence that these chemicals can help to slow down macular degeneration, which is the main cause of sight loss in the UK. However, this is somewhat controversial.

愛爾蘭諾蘭教授帶領的研究團隊最近完成了一項長達一年的實驗。實驗研究的是補充黃斑色素的益處,參與實驗的有一百人。實驗結果表明,攝入葉黃素,玉米黃質和中玉米黃質能極大提升視網膜黃斑的保護功能,同時也很大提升了視力。同時,還有一些證據顯示,服用這些化學藥物能延緩視網膜的衰退,而后者卻又是英國盲人中致盲的主要因素。然而,這一實驗還是存在一些爭議的。

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.

葉黃素是一種只存在于植物中的黃色化合物,作用是吸收光線。除了可以通過食用甘藍菜和菠菜獲取這種化合物外,蛋黃中也含有葉黃素。玉米黃質是一種類似于葉黃素的黃色化合物,可以從諸如玉米,黃甜椒和藏紅花中獲取。中玉米黃質卻難以從食物中獲取,但有些魚類體內含有這種物質。視網膜中攝入葉黃素就能產生中玉米黃質,也可以通過食用萬壽菊提取物攝入。

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!

至于胡蘿卜,證據顯示,它的綠葉富含對視力有益的關鍵化合物,但其本身并不具有這種功能。所以,下次再有人告訴你說胡蘿卜可以提升視力的時候,你還不如省著點喂兔子。你可以用獼猴桃取而代之!

 

詞匯表

kale

(蔬菜)羽衣甘藍

to degenerate

下降,衰退

supplement

補充物,補充片劑

chemical

化學品

vision

視力

retina

視網膜

tissue

組織

macula

視網膜黃斑

pigment

色素

lutein

葉黃素

zeaxanthin

玉米黃素

meso-zeaxanthin

消旋玉米黃素

sight loss

失明

compound

化合物

saffron

藏紅花

to ingest

攝取

marigold extract

萬壽菊提取物

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