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托福阅读:“纯素食主义”的风险

时间:2015-06-01 00:08来源:互联网 提供网友:mapleleaf   字体: [ ]
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   近几年,素食主义悄然流行,越来越多的人加入了素食者的行列。不过,近日发布在自然母亲网络的一篇文章指出,纯素食也有潜在的健康风险,比如,纯素食者患肠癌的几率更高、骨矿物密度偏低,以及更容易缺乏维生素B12等等。营养专家表示,加入纯素食者行列意味着你要花更多的时间来规划饮食结构以保证各类营养摄入均衡。如果没有精力和时间详细规划,营养专家建议不妨做一个“弹性素食者”,即大部分时间吃素,偶尔吃点肉补充动物蛋白。

  Thinking of giving up meat from your diet? The potential health benefits of a green diet are well established, but a story by the Mother Nature Network (MNN) says there are also some potential side effects and health risks associated with a vegetarian1 lifestyle.
  Could low cholesterol2 kill you? A study by the Honolulu Heart Program found that elderly people with a "low cholesterol concentration" had a "significant association with mortality." In addition, a 2009 review published in the American Journal of Clinical Nutrition found that while vegetarians3 have an overall lower rate of cancer compared with meat eaters, vegetarians do have a 39 percent higher rate of colorectal cancer.
  Other health concerns associated with vegetarianism4 cited by MNN included lower bone mineral density5 and lower levels of vitamin B12. However, the publishers of the bone density study said the "magnitude of the association is clinically insignificant," at just around 5 percent.
  Going vegetarian appears to have gained popularity in recent years. A recent Yahoo Sports article even examined the diet of Mixed Martial6 Arts (MMA) fighter Jake Shields. Though much of the media's focus has been on a worldwide trend toward bigger diets, whether that's Pizza Hut offering strange fast food mashups or yet another customer at the Heart Attack Grill7 proving that there is truth in advertising8.
  The lesson in these potential risk-factors seems to be that if you're going to become a vegan or vegetarian, you'll need to spend more time planning your nutritional9 choices to help ensure a balanced intake10 of vitamins and other nutrients11. Though if you don't have the time or inclination12 for such efforts, there may be another option. University of Idaho nutritionist Katie Minor13 says that a "flexitarian" diet may be a viable14 third way.
  "Flexitarians are people who are vegetarian most of the time, but once in a while will consume an animal protein," Minor told MNN. "The more restrictive you are with your diet, the more you'll have to closely monitor what you're consuming and the more likely your need will be to supplement. Work with a registered dietician to make sure you're not at risk for dietary deficiencies."

点击收听单词发音收听单词发音  

1 vegetarian 7KGzY     
n.素食者;adj.素食的
参考例句:
  • She got used gradually to the vegetarian diet.她逐渐习惯吃素食。
  • I didn't realize you were a vegetarian.我不知道你是个素食者。
2 cholesterol qrzzV     
n.(U)胆固醇
参考例句:
  • There is cholesterol in the cell of body.人体细胞里有胆固醇。
  • They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
3 vegetarians 92ca2254bb61eaa208608083177e4ed9     
n.吃素的人( vegetarian的名词复数 );素食者;素食主义者;食草动物
参考例句:
  • Vegetarians are no longer dismissed as cranks. 素食者不再被视为有怪癖的人。
  • Vegetarians believe that eating meat is bad karma. 素食者认为吃肉食是造恶业。
4 vegetarianism xKnzZ     
n.素食,素食主义
参考例句:
  • More and more people are believing in vegetarianism and diet for health. 而今越来越多的人们相信素食和节食有利于身体健康。 来自《简明英汉词典》
  • She is an exponent of vegetarianism. 她是一个素食主义的倡导者。 来自《简明英汉词典》
5 density rOdzZ     
n.密集,密度,浓度
参考例句:
  • The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
  • The region has a very high population density.该地区的人口密度很高。
6 martial bBbx7     
adj.战争的,军事的,尚武的,威武的
参考例句:
  • The sound of martial music is always inspiring.军乐声总是鼓舞人心的。
  • The officer was convicted of desertion at a court martial.这名军官在军事法庭上被判犯了擅离职守罪。
7 grill wQ8zb     
n.烤架,铁格子,烤肉;v.烧,烤,严加盘问
参考例句:
  • Put it under the grill for a minute to brown the top.放在烤架下烤一分钟把上面烤成金黄色。
  • I'll grill you some mutton.我来给你烤一些羊肉吃。
8 advertising 1zjzi3     
n.广告业;广告活动 a.广告的;广告业务的
参考例句:
  • Can you give me any advice on getting into advertising? 你能指点我如何涉足广告业吗?
  • The advertising campaign is aimed primarily at young people. 这个广告宣传运动主要是针对年轻人的。
9 nutritional 4HRxN     
adj.营养的,滋养的
参考例句:
  • A diet lacking in nutritional value will not keep a person healthy.缺乏营养价值的饮食不能维持人的健康。
  • The labels on food products give a lot of information about their nutritional content.食品上的标签提供很多关于营养成分的信息。
10 intake 44cyQ     
n.吸入,纳入;进气口,入口
参考例句:
  • Reduce your salt intake.减少盐的摄入量。
  • There was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。
11 nutrients 6a1e1ed248a3ac49744c39cc962fb607     
n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
参考例句:
  • a lack of essential nutrients 基本营养的缺乏
  • Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》
12 inclination Gkwyj     
n.倾斜;点头;弯腰;斜坡;倾度;倾向;爱好
参考例句:
  • She greeted us with a slight inclination of the head.她微微点头向我们致意。
  • I did not feel the slightest inclination to hurry.我没有丝毫着急的意思。
13 minor e7fzR     
adj.较小(少)的,较次要的;n.辅修学科;vi.辅修
参考例句:
  • The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
  • I gave him a minor share of my wealth.我把小部分财产给了他。
14 viable mi2wZ     
adj.可行的,切实可行的,能活下去的
参考例句:
  • The scheme is economically viable.这个计划从经济效益来看是可行的。
  • The economy of the country is not viable.这个国家经济是难以维持的。
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