But because only about a third of non-pregnant women take precautionary folic acid supplements, fortifying foods made with enriched flour ensures everyone gets a modest amount.

• 因为只有三分之一的非怀孕妇女采取服用叶酸补充剂，所以通过对食品与面粉强化添加叶酸，确保了每个人都会有适量的摄入。