Mice fed a diet high in sodium had increased immune cell activity in their skin that helped ward off infection.
老鼠被餵養鈉含量高的食物可增加牠們皮膚免疫細胞的活動能力，幫助防止感染。
It’s painful to rub salt in a wound. But a new study shows that salty skin can actually ward off infections, at least in mice fed a high-sodium diet.
在傷口上擦鹽是很痛的。但是一項新研究發現含有鹽分的皮膚真的可以防止感染，至少在被餵養高鈉含量飲食的老鼠身上有用。
We tend to think of dietary salt as a health threat. And it is. Too much sodium has been linked to high blood pressure and an increased risk for heart attack and stroke. But we also crave salty snacks and store the accumulated sodium in our bodies, particularly in the skin.
我們傾向認為含鹽飲食是對健康的威脅。而它的確是。過多的鈉已與高血壓和增加心臟病及心臟中風的風險做連結。但我們仍對鹹的點心有強烈需求，並且儲存成堆的鈉在我們的身體裡，特別是在皮膚。
A clue to explaining this paradox came when researchers noticed that mice that were attacked by a cage mate wound up with an unusually large amount of sodium at the site of the bite. They then found high sodium levels in people at the locations of bacterial skin infections.
一個解釋這種矛盾現象的線索，是當研究人員發現老鼠遭到籠子中的同伴攻擊時，最後在牠們被咬傷的部位會有不正常的大量鈉出現。研究人員後來在人受到細菌性皮膚感染的部位也發現高量的鈉。
So the researchers fed mice a high-sodium diet. And found that the dietary salt boosted the activity of immune cells in the animals’ skin, which gave them a leg up when it came to healing their wounds.
所以研究人員餵養老鼠高鈉含量的飲食。接著發現飲食中的鹽促進動物皮膚免疫細胞的活動，這種含鹽飲食在牠們治癒傷口時給予幫助。
新聞辭典
immune：形容詞，免疫的。例句：They are immune to criticism.（他們對批評免疫。）
wind up with：片語，以擁有…做為結束。例句：I don’t want to wind up with all the kids for the weekend.（我不想跟所有這些小孩共度週末。）
give a leg up：片語，幫助某人，讓他更成功。例句：These skills will give you a leg up in the job market.（這些技能會幫助你在就業市場裡成功找到工作。）
宏浩翻譯 引用自http://iservice.ltn.com.tw/Service/english/english.php?engno=861402&day=2015-03-10
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