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叶酸备孕/孕早期应选5-MTHF活性形式或普通合成叶酸而非'食物来源叶酸'，约30-40%人群MTHFR基因突变导致合成叶酸转化率低，此类人群优选活性叶酸剂型

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Unverified备孕及孕早期应选活性叶酸（5-MTHF/L-甲基叶酸）而非合成叶酸，因约40%人群携带MTHFR基因变异导致合成叶酸转化率下降94% similar Unverified叶酸应选活性型5-MTHF(甲基叶酸)而非合成叶酸(folic acid)，约30-40%人群携带MTHFR基因变异无法有效转化合成叶酸，备孕孕期人群尤其重要93% similar Unverified叶酸活性形式选甲基四氢叶酸（5-MTHF）优于合成叶酸（folic acid），约30-40%人群携带MTHFR基因突变导致合成叶酸转化率低，备孕孕妇优先选活性叶酸配方93% similar Unverified叶酸形态优选活性型5-MTHF（左旋甲基叶酸）而非合成叶酸（folic acid），约30%-40%人群携带MTHFR基因突变导致合成叶酸转化率下降，备孕/孕期女性尤其应看形态标注93% similar Unverified叶酸认准活性型5-甲基四氢叶酸(5-MTHF),约30-40%人群携带MTHFR基因突变无法有效转化普通叶酸,备孕/孕期女性尤其应选活性叶酸而非合成叶酸(folic acid)92% similar

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