维生素B12 的可耐受最高摄入量（UL）是多少 以下对可耐受最高摄入量的解释，哪项是错误的

\u7ef4\u751f\u7d20B12 \u7684\u53ef\u8010\u53d7\u6700\u9ad8\u6444\u5165\u91cf\uff08UL\uff09\u662f\u591a\u5c11

\u7ef4\u751f\u7d20B12\u6bcf\u65e5\u6700\u5927\u5242\u91cf\u4e3a500\u2014\u20141000ng\u3002

\u81b3\u98df\u8425\u517b\u7d20\u53c2\u8003\u6444\u5165\u91cf\uff08DRIS\uff09\u662f\u5728RDA\u7684\u57fa\u7840\u4e0a\u53d1\u5c55\u8d77\u6765\u7684\u4e00\u7ec4\u6bcf\u65e5\u5e73\u5747\u81b3\u98df\u8425\u517b\u7d20\u6444\u5165\u91cf\u7684\u53c2\u8003\u503c\uff0c\u5305\u62ec4\u4e2a\u8425\u517b\u6c34\u5e73\u6307\u6807\uff1a\u5e73\u5747\u9700\u8981\u91cf\uff08EAR\uff09\u3001\u6444\u5165\u91cf\uff08RNI\uff09\u3001\u9002\u5b9c\u6444\u5165\u91cf\uff08AI\uff09\u548c\u53ef\u8010\u53d7\u6700\u9ad8\u6444\u5165\u91cf\uff08UL\uff09\u3002 \u5e73\u5747\u9700\u8981\u91cf\uff08EAR\uff09\u5e73\u5747\u9700\u8981\u91cf\u662f\u67d0\u4e00\u7279\u5b9a\u6027\u522b\u3001\u5e74\u9f84\u53ca\u751f\u7406\u72b6\u51b5\u7fa4\u4f53\u4e2d\u5bf9\u67d0\u79cd\u8425\u517b\u7d20\u9700\u8981\u91cf\u7684\u5e73\u5747\u503c\u3002\u6444\u5165\u91cf\u8fbe\u5230EAR\u6c34\u5e73\u65f6\u53ef\u4ee5\u6ee1\u8db3\u7fa4\u4f53\u4e2d\u534a\u6570\u4e2a\u4f53\u5bf9\u8be5\u8425\u517b\u7d20\u7684\u9700\u8981\uff0c\u800c\u4e0d\u80fd\u6ee1\u8db3\u53e6\u5916\u534a\u6570\u4e2a\u4f53\u7684\u9700\u8981\u3002EAR\u4e3b\u8981\u7528\u4e8e\u8ba1\u5212\u548c\u8bc4\u4ef7\u7fa4\u4f53\u7684\u81b3\u98df\u3002 \u6444\u5165\u91cf\uff08RNI\uff09\u6444\u5165\u91cf\u76f8\u5f53\u4e8e\u4f20\u7edf\u4f7f\u7528\u7684RDA\uff0c\u5b83\u53ef\u4ee5\u6ee1\u8db3\u67d0\u4e00\u7279\u5b9a\u7fa4\u4f53\u4e2d97\uff05\uff0d98\uff05\u4e2a\u4f53\u7684\u9700\u8981\uff0c\u957f\u671f\u6444\u5165RNI\u6c34\u5e73\uff0c\u53ef\u4ee5\u7ef4\u6301\u7ec4\u7ec7\u4e2d\u6709\u9002\u5f53\u7684\u50a8\u5907\u3002RNI\u662f\u5065\u5eb7\u4e2a\u4f53\u81b3\u98df\u8425\u517b\u7d20\u6444\u5165\u91cf\u76ee\u6807\u3002 \u9002\u5b9c\u6444\u5165\u91cf\uff08AI\uff09 \u9002\u5b9c\u6444\u5165\u91cf\u662f\u901a\u8fc7\u89c2\u5bdf\u6216\u5b9e\u9a8c\u83b7\u5f97\u7684\u5065\u5eb7\u4eba\u7fa4\u67d0\u79cd\u8425\u517b\u7d20\u7684\u6444\u5165\u91cf\u3002AI\u5e94\u80fd\u6ee1\u8db3\u76ee\u6807\u4eba\u7fa4\u4e2d\u51e0\u4e4e\u6240\u6709\u4e2a\u4f53\u7684\u9700\u8981\u3002AI\u4e3b\u8981\u7528\u4e8e\u4e2a\u4f53\u7684\u8425\u517b\u7d20\u6444\u5165\u76ee\u6807\uff0c\u540c\u65f6\u7528\u4f5c\u9650\u5236\u8fc7\u591a\u6444\u5165\u7684\u6807\u51c6\u3002\u5f53\u5065\u5eb7\u4e2a\u4f53\u6444\u5165\u91cf\u8fbe\u5230AI\u65f6\uff0c\u51fa\u73b0\u8425\u517b\u7f3a\u4e4f\u7684\u5371\u9669\u6027\u5f88\u5c0f\u3002 \u53ef\u8010\u53d7\u6700\u9ad8\u6444\u5165\u91cf\uff08UL\uff09 \u53ef\u8010\u53d7\u6700\u9ad8\u6444\u5165\u91cf\u662f\u5e73\u5747\u6bcf\u65e5\u53ef\u4ee5\u6444\u5165\u8be5\u8425\u517b \u7d20\u7684\u6700\u9ad8\u91cf\u3002\u8fd9\u4e2a\u91cf\u5bf9\u4e00\u822c\u4eba\u7fa4\u4e2d\u7684\u51e0\u4e4e\u6240\u6709\u4e2a\u4f53\u4e0d\u81f4\u4e8e\u635f\u5bb3\u5065\u5eb7\u3002UL\u7684\u4e3b\u8981\u7528\u9014\u662f\u68c0\u67e5\u4e2a\u4f53\u6444\u5165\u662f\u5426\u8fc7\u9ad8\u7684\u53ef\u80fd\uff0c\u907f\u514d\u53d1\u751f\u4e2d\u6bd2\u3002

维生素B12每日最大剂量为500——1000ng。

500-1000ng不知道是不是搞错单位了 2.4ug都2400ng了 - -

扩展阅读：b12是修复神经的吗 ... 缺b12最明显的5个征兆 ... b12神经最快恢复方法 ... 维生素b12高需要治疗吗 ... b2和b6哪个治掉头发 ... b12片服用三大忌 ... 提高代谢吃维生素b几 ... 维生素b12能长期吃吗 ... 维b1一天一粒的危害 ...