mainly green and yellow vegetables have the beta carotene compound that aids people from getting a vitamin A deficiency. one cup of carrot juice equals just about 450 percent of the daily value one would need to meet the daily requirements of vitamin A for beta-carotene. It is good for bone growth, cell division, and vision. Mainly the places where there are vitamin A deficiencies are in third word countires. One of the the symptoms of the deficiency in vitamin A is blindness at night. The night vision in the dark is attributed to retinol and if there is a serious dryness in the eyes due to the lack of vitamin A than it could damage the cornea.
http://ods.od.nih.gov/factsheets/vitamina.asp
“Retinol is found in foods that come from animals such as whole eggs, milk, and liver. Most fat-free milk and dried nonfat milk solids sold in the United States are fortified with vitamin A to replace the amount lost when the fat is removed. Fortified foods such as fortified breakfast cereals also provide vitamin A. Provitamin A carotenoids are abundant in darkly colored fruits and vegetables. The 2000 National Health and Nutrition Examination Survey (NHANES) indicated that major dietary contributors of retinol are milk, margarine, eggs, beef liver and fortified breakfast cereals, whereas major contributors of provitamin A carotenoids are carrots, cantaloupes, sweet potatoes, and spinach”
Here is a map of the world that measures the Vitamin A deficiencies.
this graph was copied from my favorite website: wikipedia.com
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