Many older adults have a vitamin B₁₂ deficiency. Reasons for this include which of the following? (Select all that apply.)

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Quizplus · Accepted Answer

A normal age-related change in the stomach is the production of less gastric acid, which makes vitamin B₁₂ absorption less efficient. For most older adults, intake of vitamin B₁₂ is usually adequate. Use of proton pump inhibitors and H? receptor blockers for more than a year can lead to lower serum vitamin B₁₂ levels by impairing absorption of the vitamin from food. Certain antibiotics and anticonvulsants can also increase the risk of vitamin B₁₂ deficiency. While it is true that older adults may be outdoors less, the major source of vitamin B₁₂ is not sunlight. While it is also true that older adults may not consume five servings of fruits and vegetables daily, fruit and vegetables are the major sources of vitamins A, C, and E and potassium.

Many Older Adults Have a Vitamin B12 Deficiency

Many Older Adults Have a Vitamin B₁₂ Deficiency