Because neural tube defects develop in the early weeks of pregnancy, before many women even know they're pregnant, it's recommended that all women of childbearing age get 400 micrograms of folate or folic acid every day.
Because neural tube defects develop in the early weeks of pregnancy, before many women even know they're pregnant, it's recommended that all women of childbearing age get 400 micrograms of folate or folic acid every day.
神经管畸形发病于妊娠早期，由于此时许多女性甚至还不知道她们已经怀孕，因此美国官方推荐所有适龄育龄妇女每日应补充400毫克叶酸。