新奇事件簿 每天7種更健康

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For many years, the nutrition message has been "five a day" – the recommendation that five portions of fruit and vegetables are enough to keep disease at bay and help us to live longer. That advice has been revised upwards. A new study suggests that people who get seven or more portions a day are healthier. Researchers from University College London studied the dietary habits of 65,000 adults over a seven-year period. They concluded that: "A robust inverse association exists between fruit and vegetable consumption and mortality, with benefits seen in up to 7-plus portions daily." In other words, if you eat more fruit and vegetables, chances are you live longer.

許多年以來，我們都認(rèn)為是“每天五種”，每天攝入五種水果和蔬菜能夠讓我們遠(yuǎn)離疾病，并幫助我們長壽。如今，這一建議有所修改。一項新的研究表明每天攝入7種或7種以上更為健康。倫敦大學(xué)的研究人員用了7年多的時間對6萬5000名成年人進(jìn)行了飲食習(xí)慣的研究。他們的結(jié)論是：“水果與蔬菜的結(jié)合對人體更加健康，每天食用7種或7種以上的水果和蔬菜最佳。換句話說，如果你食用的水果和蔬菜多，那么你更有機會活得長久。

The researchers put people into five different groups, depending on how much fruit and veg they ate. They found that those who ate seven or more portions a day had a 42 per cent lower risk of death than those whoate just one portion. They recommended that schools serve healthier meals and that supermarkets put more emphasis on prominently displaying cheaper produce. They warned that frozen and canned fruit was linked to higher mortality rates. Some experts say the findings of the study should be taken with a pinch of salt. One dietician said the findings ignored the fact that people who eat more fruit and veg are generally wealthier and thus lead lifestyles that will help them live longer anyway.

研究人員將研究對象進(jìn)行了5種分類，依據(jù)的是他們攝入水果和蔬菜的數(shù)量。他們發(fā)現(xiàn)那些每天攝入7種或者7種以上人群的死亡率比那些只吃一種的人群減少了42%。他們還建議學(xué)校要提供更加健康的食物，超市應(yīng)該銷售一些價格更為便宜的健康食物。他們還警告說冷凍以及罐頭水果能夠增加人們的死亡率。許多專家認(rèn)為這一研究發(fā)現(xiàn)值得懷疑。一位營養(yǎng)學(xué)家認(rèn)為這一發(fā)現(xiàn)忽略了一個事實，這就是食用更多水果和蔬菜的人更加健康，這樣的生活方式讓他們活得更長。