Linked from
The 11 pages that link to Vitamin A deficiency, each with the reason it gives.
Vitamin ARelated: It shows what fails when stores and intake cannot meet physiological needs.
RetinalRelated: A shortage can limit retinal supply and cause night blindness.
Golden riceRelated: Golden Rice was developed as a food-based response to vitamin A deficiency.
AbetalipoproteinemiaRelated: Malabsorption can worsen night vision and contribute to retinal injury.