纯素食有风险 不妨“弹性素食”
<p>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<span word="B">B</span>12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。</p><p><span word="Thinking">Thinking</span> <span word="of">of</span> <span word="giving">giving</span> <span word="up">up</span> <span word="meat">meat</span> <span word="from">from</span> <span word="your">your</span> <span word="diet">diet</span>? <span word="The">The</span> <span word="potential">potential</span> <span word="health">health</span> <span word="benefits">benefits</span> <span word="of">of</span> <span word="a">a</span> <span word="green">green</span> <span word="diet">diet</span> <span word="are">are</span> <span word="well">well</span> <span word="established">established</span>, <span word="but">but</span> <span word="a">a</span> <span word="story">story</span> <span word="by">by</span> <span word="the">the</span> <span word="Mother">Mother</span> <span word="Nature">Nature</span> <span word="Network">Network</span> (<span word="MNN">MNN</span>) <span word="says">says</span> <span word="there">there</span> <span word="are">are</span> <span word="also">also</span> <span word="some">some</span> <span word="potential">potential</span> <span word="side">side</span> <span word="effects">effects</span> <span word="and">and</span> <span word="health">health</span> <span word="risks">risks</span> <span word="associated">associated</span> <span word="with">with</span> <span word="a">a</span> <span word="vegetarian">vegetarian</span> <span word="lifestyle">lifestyle</span>.</p><p><span word="Could">Could</span> <span word="low">low</span> <span word="cholesterol">cholesterol</span> <span word="kill">kill</span> <span word="you">you</span>? <span word="A">A</span> <span word="study">study</span> <span word="by">by</span> <span word="the">the</span> <span word="Honolulu">Honolulu</span> <span word="Heart">Heart</span> <span word="Program">Program</span> <span word="found">found</span> <span word="that">that</span> <span word="elderly">elderly</span> <span word="people">people</span> <span word="with">with</span> <span word="a">a</span> "<span word="low">low</span> <span word="cholesterol">cholesterol</span> <span word="concentration">concentration</span>" <span word="had">had</span> <span word="a">a</span> "<span word="significant">significant</span> <span word="association">association</span> <span word="with">with</span> <span word="mortality">mortality</span>." <span word="In">In</span> <span word="addition">addition</span>, <span word="a">a</span> 2009 <span word="review">review</span> <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="American">American</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Clinical">Clinical</span> <span word="Nutrition">Nutrition</span> <span word="found">found</span> <span word="that">that</span> <span word="while">while</span> <span word="vegetarians">vegetarians</span> <span word="have">have</span> <span word="an">an</span> <span word="overall">overall</span> <span word="lower">lower</span> <span word="rate">rate</span> <span word="of">of</span> <span word="cancer">cancer</span> <span word="compared">compared</span> <span word="with">with</span> <span word="meat">meat</span> <span word="eaters">eaters</span>, <span word="vegetarians">vegetarians</span> <span word="do">do</span> <span word="have">have</span> <span word="a">a</span> 39 <span word="percent">percent</span> <span word="higher">higher</span> <span word="rate">rate</span> <span word="of">of</span> <span word="colorectal">colorectal</span> <span word="cancer">cancer</span>.</p><p><span word="Other">Other</span> <span word="health">health</span> <span word="concerns">concerns</span> <span word="associated">associated</span> <span word="with">with</span> <span word="vegetarianism">vegetarianism</span> <span word="cited">cited</span> <span word="by">by</span> <span word="MNN">MNN</span> <span word="included">included</span> <span word="lower">lower</span> <span word="bone">bone</span> <span word="mineral">mineral</span> <span word="density">density</span> <span word="and">and</span> <span word="lower">lower</span> <span word="levels">levels</span> <span word="of">of</span> <span word="vitamin">vitamin</span> <span word="B">B</span>12. <span word="However">However</span>, <span word="the">the</span> <span word="publishers">publishers</span> <span word="of">of</span> <span word="the">the</span> <span word="bone">bone</span> <span word="density">density</span> <span word="study">study</span> <span word="said">said</span> <span word="the">the</span> "<span word="magnitude">magnitude</span> <span word="of">of</span> <span word="the">the</span> <span word="association">association</span> <span word="is">is</span> <span word="clinically">clinically</span> <span word="insignificant">insignificant</span>," <span word="at">at</span> <span word="just">just</span> <span word="around">around</span> 5 <span word="percent">percent</span>.</p>
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