Unverified90% confidenceFactTime unknown
天然食物中的叶酸(folate)生物利用度约为50%,而合成叶酸(folic acid)接近85%,孕期备孕若单靠天然叶酸食品,每日需摄入约400-800μg DFE(膳食叶酸当量)才能满足需求
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