Vitamin A

Alternative names:

deficiency - vitamin A; vitamin A deficiency

Side effects:

Vitamin A deficiency can increase the susceptibility to infectious diseases, as well as cause vision problems.

Large doses of vitamin A can be toxic. They can also cause abnormal fetal development in pregnant women. Increased amounts of beta-carotene can turn the color of skin to yellow or orange. The skin color returns to normal once the increased intake of beta-carotene is reduced.