Guide :High School

_________ deficiency is the developing world’s most common cause of preventable brain damage.

_________ deficiency is the developing world’s most common cause of preventable brain damage. A. Iron B. Vitamin A C. Iodine D. Calcium
The answer is Vitamin A ...Vitamin A deficiency (VAD) is a lack of vitamin A in humans. It is common in poorer countries but rarely seen in more developed countries. Nyctalopia (night blindness) is one of the first signs of VAD.It is the major cause of preventable brain damage, ...

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