What does VAD mean in Physiology?
This page is about the meanings of the acronym/abbreviation/shorthand VAD in the Medical field in general and in the Physiology terminology in particular.
Vitamin A Deficiency
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Definition
What does VAD mean?
- Vitamin A deficiency
- Vitamin A deficiency is a lack of vitamin A in humans. It is common in poorer countries but rarely seen in more developed countries that are wealthier. Night blindness is one of the first signs of vitamin A deficiency. Xerophthalmia, keratomalacia, and complete blindness can also occur since Vitamin A has a major role in phototransduction. Approximately 250,000 to 500,000 malnourished children in the developing world go blind each year from a deficiency of vitamin A, approximately half of whom die within a year of becoming blind. The United Nations Special Session on Children in 2002 set the elimination of vitamin A deficiency by 2010. The prevalence of night blindness due to vitamin A deficiency is also high among pregnant women in many developing countries. Vitamin A deficiency also contributes to maternal mortality and other poor outcomes in pregnancy and lactation. Vitamin A deficiency also diminishes the ability to fight infections. In countries where children are not immunized, infectious disease like measles have higher fatality rates. As elucidated by Dr. Alfred Sommer, even mild, subclinical deficiency can also be a problem, as it may increase children's risk of developing respiratory and diarrheal infections, decrease growth rate, slow bone development, and decrease likelihood of survival from serious illness.
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"VAD." Abbreviations.com. STANDS4 LLC, 2024. Web. 13 Jun 2024. <https://www.abbreviations.com/term/90342>.
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