Lets Know About Vitamin A

Vitamin A is a group of fat-soluble compounds that can be differentiated into two categories, depending on whether the food source is an animal or a plant:

Vitamin A found in foods that come from animals is called ’preformed vitamin A’ or ’retinol’; it is one of the most active forms of vitamin A.

Vitamin A found in fruits and vegetables is called ’provitamin A carotenoid’, which can be cleaved into retinol in the body; the carotenoid ’beta-carotene’ is most efficiently converted into retinol, making it an important vitamin A .

Disease Risk Reduction
Cancer
Presently, there is only little evidence in humans that increased intake of natural (in food) or isolated vitamin A (in dietary supplements) reduce breast or lung cancer risk.

Eye disease
Vitamin A supplementation is successfully used to prevent deficiency-related eye diseases such as xerophthalmia, which may progress to blindness.

Sources-
The richest food source of preformed vitamin A is liver, with considerable amounts also found in egg yolk, whole milk, butter and cheese.

Provitamin A carotenoids (e.g., beta-carotene) are found in carrots, yellow and dark green leafy vegetables (e.g., spinach, broccoli), pumpkin, apricots, melon, and palm oil.


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