Question

what is VAD (vitamin A deficiency) ❓ ​

Answer 1

Answer:

Vitamin A deficiency.

Not enough vitamin A in the body.

Vitamin A deficiency is most common in Africa and Southeast Asia. It can also occur when the gut can't absorb the nutrient.

VAD: Ventricular assist device, a mechanical pump that takes over the function of the damaged ventricle of the heart and restores normal blood flow. ... Left ventricular assist devices also are a treatment for patients with advanced heart failure who are not candidates for cardiac transplantation.

Answer 2

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] Nyctalopia (night blindness) is one of the first signs of VAD. Xerophthalmia, keratomalacia, and complete blindness can also occur since vitamin A has a major role in phototransduction.[1] The three forms of vitamin A include retinols, beta-carotenes, and provitamin A carotenoids.[2]

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