[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

孕期叶酸补充选5-甲基四氢叶酸(活性叶酸)优于合成叶酸:约40%人群存在MTHFR基因突变导致合成叶酸转化率低,活性叶酸无需代谢直接吸收,孕早期日需400-800μg

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85%
Confidence
Long-term
Relevance
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