你需要了解的关于维生素的问题
<p><span word="New">New</span> <span word="studies">studies</span> <span word="and">and</span> <span word="claims">claims</span> <span word="about">about</span> <span word="vitamins">vitamins</span> <span word="are">are</span> <span word="published">published</span> <span word="daily">daily</span>, <span word="and">and</span> <span word="many">many</span> <span word="seem">seem</span> <span word="to">to</span> <span word="contradict">contradict</span> <span word="each">each</span> <span word="other">other</span>. <span word="What">What</span> <span word="does">does</span> <span word="an">an</span> <span word="average">average</span> <span word="consumer">consumer</span> <span word="really">really</span> <span word="need">need</span> <span word="to">to</span> <span word="know">know</span> <span word="about">about</span> <span word="vitamins">vitamins</span>?</p><p>跟维生素有关的新研究和声明每天都公布出来，而且很多都自相矛盾。一般人真正要维生素的什么呢？</p><p>“<span word="The">The</span> <span word="fairly">fairly</span> <span word="simple">simple</span> <span word="answer">answer</span> <span word="is">is</span>, <span word="not">not</span> <span word="much">much</span>,” <span word="says">says</span> <span word="Paul">Paul</span> <span word="Thomas">Thomas</span>, <span word="EdD">EdD</span>, <span word="RD">RD</span>, <span word="scientific">scientific</span> <span word="consultant">consultant</span> <span word="with">with</span> <span word="the">the</span> <span word="National">National</span> <span word="Institutes">Institutes</span> <span word="of">of</span> <span word="Health">Health</span> <span word="Office">Office</span> <span word="of">of</span> <span word="Dietary">Dietary</span> <span word="Supplements">Supplements</span>. <span word="Almost">Almost</span> <span word="everyone">everyone</span> <span word="can">can</span> <span word="benefit">benefit</span> <span word="from">from</span> <span word="taking">taking</span> <span word="a">a</span> <span word="supplement">supplement</span> <span word="with">with</span> <span word="calcium">calcium</span> <span word="because">because</span> <span word="most">most</span> <span word="people">people</span> <span word="don">don</span>’<span word="t">t</span> <span word="get">get</span> <span word="as">as</span> <span word="much">much</span> <span word="as">as</span> <span word="they">they</span> <span word="need">need</span> <span word="through">through</span> <span word="their">their</span> <span word="diets">diets</span> — 1,000 <span word="mg">mg</span> <span word="a">a</span> <span word="day">day</span> <span word="for">for</span> <span word="adults">adults</span>, <span word="increasing">increasing</span> <span word="to">to</span> 1,200 <span word="mg">mg</span> <span word="after">after</span> <span word="age">age</span> 50. <span word="Thomas">Thomas</span> <span word="notes">notes</span> <span word="that">that</span> <span word="some">some</span> <span word="vitamins">vitamins</span> <span word="become">become</span> <span word="especially">especially</span> <span word="important">important</span> <span word="at">at</span> <span word="certain">certain</span> <span word="times">times</span> <span word="in">in</span> <span word="a">a</span> <span word="person">person</span>’<span word="s">s</span> <span word="life">life</span>. <span word="Pregnant">Pregnant</span> <span word="women">women</span> <span word="or">or</span> <span word="women">women</span> <span word="who">who</span> <span word="may">may</span> <span word="become">become</span> <span word="pregnant">pregnant</span> <span word="should">should</span> <span word="be">be</span> <span word="certain">certain</span> <span word="to">to</span> <span word="get">get</span> <span word="enough">enough</span> <span word="folate">folate</span>, <span word="or">or</span> <span word="folic">folic</span> <span word="acid">acid</span>, <span word="a">a</span> <span word="B">B</span>-<span word="complex">complex</span> <span word="vitamin">vitamin</span> — 600 <span word="units">units</span> <span word="a">a</span> <span word="day">day</span>, <span word="rather">rather</span> <span word="than">than</span> 400. <span word="And">And</span> <span word="as">as</span> <span word="you">you</span> <span word="age">age</span>, <span word="you">you</span> <span word="should">should</span> <span word="probably">probably</span> <span word="take">take</span> <span word="a">a</span> <span word="daily">daily</span> <span word="supplement">supplement</span> <span word="to">to</span> <span word="get">get</span> <span word="additional">additional</span> <span word="B">B</span>12, <span word="he">he</span> <span word="suggests">suggests</span>.</p><p>“非常简单的答案是，不需太多。”美国国立卫生研究院饮食补充办公室科学顾问教育学博士兼注册营养师<span word="Paul">Paul</span> <span word="Thomas">Thomas</span>说。几乎每个人都可以从服用钙补充品中受益，因为大部分人没有从饮食中获得足够的营养——成人每天1000毫克，50岁之后增加到1200毫克。<span word="Thomas">Thomas</span>指出，一些维生素在人生中某些时候会变得非常重要。怀孕女性和即将怀孕的女性应吸收足够的叶酸，或维生素<span word="B">B</span>——每天600个单位，而不是400个单位。他还建议，随着年龄的增长，还应该服用日常补充剂获得<span word="B">B</span>12.</p>
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