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Prevalence of vitamin A deficiency, 1995-2005. Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. [1] It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries. [1]
Vitamin A deficiency in the U.S. is rare, according to the National Institutes of Health (NIH). “Severe measles in children that have a vitamin A deficiency is very different than if you have ...
Vitamin A deficiency is "the leading cause of preventable childhood blindness", according to UNICEF. [10] [22] It also increases the risk of death from common childhood conditions, such as diarrhea. UNICEF regards addressing vitamin A deficiency as critical to reducing child mortality, the fourth of the United Nations' Millennium Development ...
"Vitamin A will reduce measles mortality, and this is especially in low-to middle-income, resource-limited countries where vitamin A deficiency and malnutrition is very common," Dr. Tina Tan ...
The CDC recommends daily doses of vitamin A at 50,000 IU for infants younger than 6 months of age, 100,000 IU for infants 6 to 11 months of age, and 200,000 IU for children 12 months of age and older.
Vitamin deficiency is the condition of a long-term lack of a vitamin.When caused by not enough vitamin intake it is classified as a primary deficiency, whereas when due to an underlying disorder such as malabsorption it is called a secondary deficiency.
However, vitamin A is most useful for measles support in patients who have a specific deficiency. The studies mainly draw on evidence from low-income countries where that deficiency is common.
Micronutrient deficiency is defined as the sustained insufficient supply of vitamins and minerals needed for growth and development, as well as to maintain optimal health. Since some of these compounds are considered essentials (we need to obtain them from the diet), micronutrient deficiencies are often the result of an inadequate intake.
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