What do micronutrients comprise of?

Appeared in: RIMS Nursing Officer - 2022

Explanation

Nutrients are broadly classified into two main groups: macronutrients and micronutrients, based on the quantity required by the body.
Micronutrients are essential nutrients that the body needs in very small amounts, typically in milligrams (mg) or micrograms (µg).
This category is composed of vitamins (such as Vitamins A, B, C, D, E, K) and minerals (such as iron, iodine, zinc, and calcium).
Although required in small quantities, they are crucial for a variety of functions including energy metabolism, immune response, and cell growth.

Option B: Both carbohydrates and lipids (fats) are classified as macronutrients. They are required by the body in large amounts primarily to provide energy.
Option C: Both water and protein are classified as macronutrients. Protein is a building block for tissues, and water is essential for hydration and metabolic processes.
Option D: This option incorrectly combines a micronutrient (vitamins) with a macronutrient (carbohydrates). Micronutrients and macronutrients are distinct categories.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Nutrients (Micronutrients vs. Macronutrients) as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in nutritional screening and patient education to prevent micronutrient deficiencies, which are common and can lead to significant health problems.
Common deficiencies include iron deficiency (leading to anemia), iodine deficiency (leading to goiter and hypothyroidism), and vitamin A deficiency (leading to night blindness).
What if? A patient on a restrictive vegan diet presents with fatigue and pallor. The nurse should recognize the increased risk for Vitamin B12 deficiency (found in animal products) and iron deficiency, and anticipate orders for blood tests and dietary counseling.

How to Approach the Question

First, identify the key term in the question: 'micronutrients'.
Recall the fundamental classification of nutrients. They are divided into two groups based on the amount the body needs.
Remember the prefixes: 'Macro-' means large (needed in large amounts) and 'Micro-' means small (needed in small amounts).
Associate macronutrients with energy and structure: carbohydrates, proteins, and fats.
Associate micronutrients with regulation and function: vitamins and minerals.
Evaluate each option based on this classification. The correct option will contain only components of the micronutrient group.

Concept Tested & Keywords

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E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 241-243

E6 Nursing Fundamentals Taylor p. 492-494

E6 Nutrition Monika Sharma 3e p. 54-56

Practise the full RIMS Nursing Officer - 2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.