Why Do We Need Vitamin A?


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Katie Harry answered
Vitamin A is very important for us because it helps us have good vision, a healthy working immune system, strong bones, reproduction and cell division. Recommended Dietary Allowance (RDA) for adult women for vitamin A is 2330IU. For adult men, it is 3000IU. Where it is good for the bones in moderate amounts, in very large amounts, it may actually weaken bones. Above 10000IU intake of vitamin A is  considered to be very toxic. Usually consuming natural foods like fruits and vegetables would not lead to toxicity as the amount in them is not too high. Some good sources of vitamin A are liver, fortified milk and cheese, orange/yellow vegetables and vegetables like carrots, cantaloupes, and apricot.
Let me enlist some of the uses of vitamin A in the body:
  • It helps us to have night vision because it is a component of the pigments in retina.
  • It keeps our immune system strong.
  • Supports growth and development of bones.
  • It may reduce risk for many kinds of cancers.
  • It keeps our skin supple and hydrated.
  • It helps to keep our epithelial cells healthy which help digestion and absorption of many nutrients in our digestive system.
  • It keeps us reproductively healthy.

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