饮食正常，消化正常的人，不会缺。孩子和老人胃肠对B12吸收不好，容易缼，适当补充多维。百渡讲的详细

来源: fuz 于 2018-04-10 18:55:17 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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