[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

含维生素B12的复合叶酸产品可避免单纯补叶酸掩盖B12缺乏导致的神经损害,尤其适合素食者、老年人及吸收功能弱者;但单纯备孕预防神经管缺陷时单方叶酸已足够

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