What is the function of vitamin A? First of all, vitamin A is the key to a perfect vision. It plays a crucial part in a number of physiologic processes that ensure the good functioning of the immune system as well. In addition to this, vitamin A is vital for healthy epithelial tissues and mucous membranes and sustains bone growth and development. It is a fat-soluble vitamin that facilitates adaptation to night vision, maintains the elasciticity and overall health of the skin, hair and mucous membranes. Moreover, it increases resistance to infection and fights free radicals.
Vitamin A deficiency symptoms include: frequent viral infections, nigh vision problems, dry and cracked skin that may appear on various parts of the body.
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