Older Adults with Atrophic Gastritis Are More Likely to Develop

Older adults with atrophic gastritis are more likely to develop vitamin B₁₂ deficiency because the ____. ​

A) bacterial overgrowth that accompanies this condition uses up the vitamin
B) condition almost always reduces exposure to sunlight
C) medication to treat atrophic gastritis destroys the vitamin
D) condition leads to decreased food intake and subsequent vitamin B₁₂ intake