The nurse is aware that particular populations are prone to vitamin deficiencies for various reasons. Why are older adults prone to vitamin D deficiency?
A) Aging reduces the kidneys' ability to activate vitamin D.
B) They are more likely to take prescription medicines that interfere with vitamin D absorption.
C) Their fixed incomes limit buying enough foods rich in vitamin D.
D) They excrete more vitamin D than younger adults do.
A
Feedback:
Vitamin D is unique in that the body has the potential to make all it needs if exposure to sunlight is optimal and liver and kidney functions are normal. Elderly persons are particularly at risk for vitamin D deficiency if they have impaired activation by the liver and kidneys.
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