Question

question 9
which of the following statements is true?
the stomach can easily absorb vitamin b - 12.
vitamin b - 12 deficiency is common among older adults.
patients with pernicious anemia are treated with high doses of folic acid.
vitamin b - 12 is absorbed in the lower segment of the large intestine.

Explanation:

• Vitamin B - 12 absorption requires intrinsic factor from the stomach and occurs in the ileum (part of the small intestine), not the stomach or lower large intestine.
• Pernicious anemia (due to lack of intrinsic factor) is treated with vitamin B - 12 injections, not high - dose folic acid.
• Older adults often have reduced stomach acid (which affects B - 12 release from food proteins) and/or reduced intrinsic factor production, making B - 12 deficiency common.

Answer:

Vitamin B - 12 deficiency is common among older adults.