A nurse is conducting a dietary assessment of a patient who is on a vegan diet. The nurse should plan to provide dietary teaching focused on food items high in which vitamin that may be absent in a vegan diet?

Appeared in: JODHPUR AIIMS SNO-2018

Explanation

Vitamin B12 is the nutrient of primary concern because its natural sources are almost exclusively animal-based (meat, dairy, eggs).
A vegan diet excludes all animal products, thereby eliminating natural dietary sources of Vitamin B12.
Without intake from fortified foods (like plant milks and cereals) or supplements, a vegan individual will inevitably become deficient.
This deficiency can lead to severe health consequences, including megaloblastic anemia and irreversible neurological damage, making patient education critical.

Option A: Vitamin A is readily available in plant-based diets in the form of beta-carotene, a precursor that the body converts to Vitamin A. Colorful fruits and vegetables like carrots, sweet potatoes, and spinach are excellent sources.
Option C: Vitamin C is abundant in a wide variety of plant foods. Vegans often have a high intake of Vitamin C due to the emphasis on fruits and vegetables in their diet, such as citrus fruits, berries, and broccoli.
Option D: Vitamin E is a fat-soluble vitamin found plentifully in plant-based sources like nuts, seeds, vegetable oils, and leafy green vegetables, all of which are staples in many vegan diets.

Clinical Relevance

Nursing practice connection: Use the key finding related to Nutritional deficiencies in vegan diets to guide bedside assessment, documentation, and the next nursing action.
Nurses play a vital role in educating patients on vegan diets about the absolute necessity of a reliable Vitamin B12 source, either through fortified foods or supplements, to prevent serious health issues.
It is a key nursing responsibility to assess vegan patients for signs and symptoms of Vitamin B12 deficiency, such as fatigue, pallor, paresthesia (tingling in hands/feet), and cognitive changes.
What if the patient was a lacto-ovo-vegetarian (eats dairy and eggs)? The risk of B12 deficiency would be significantly lower, as dairy and eggs are good sources. However, the nurse should still assess their intake to ensure it is adequate.

How to Approach the Question

First, identify the key term in the question: 'vegan diet'. Understand its definition, which is the exclusion of all animal products (meat, poultry, fish, dairy, eggs).
Next, review the options, which are all vitamins (A, B12, C, E).
Systematically consider the primary dietary sources for each vitamin.
Recall that Vitamin B12 is unique in that its natural sources are almost exclusively animal-derived.
Recall that Vitamins A (as beta-carotene), C, and E are widely available in plant-based foods like fruits, vegetables, nuts, and seeds.
Based on this, deduce that Vitamin B12 is the nutrient most likely to be absent from a vegan diet and would be the focus of dietary teaching.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 463-465

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