由此可以看出，维生素A缺乏若不进行早期干预，有严重的不良后果，尤其是影响儿童的生长发育[32]；而干预补充有效地避免了可能出现的危害。维生素A属于脂溶性，过量服用有严重毒性，所以减低剂量至1/3不但减少毒性，而且综合体重、摄食量、摄食效率，血清维生素A等指标同样达到了全剂量的效果。对于改善维生素A缺乏及因其导致的食欲下降，1/3剂量的维生素A联合锌补充改善效果最佳，为下一步研制改善维生素A缺乏的相关营养补充剂提供充分依据。

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