Human milk is rich in all EXCEPT?

Appeared in: AIIMS Raipur - 2017 (Shift-3)

Explanation

Human milk is a poor source of iron. While the iron present is highly bioavailable, the absolute quantity is low.
An infant is born with iron stores obtained from the mother, which typically last for the first 4 to 6 months of life.
After this period, exclusively breastfed infants require an external source of iron, such as iron-fortified cereals or supplements, to prevent iron-deficiency anemia.
Compared to macronutrients like fat and carbohydrates, the concentration of iron in breast milk is significantly lower.

Option A: This is incorrect because fat is a major component of human milk, serving as the primary source of calories for the infant.
Option B: This is incorrect. Human milk contains essential proteins, primarily whey and casein, which are crucial for growth and are easily digested by the infant.
Option D: This is incorrect because carbohydrate, in the form of lactose, is the most abundant macronutrient in human milk, providing a vital energy source.

Visual 1: Bar Chart - A chart comparing the grams of Carbohydrate, Fat, and Protein to the micrograms of Iron in 100mL of human milk to visually emphasize the low iron content.
Visual 2: Infographic - An infographic showing the nutritional breakdown of human milk, highlighting the major components and the trace minerals.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Nutritional composition of human milk as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in educating new mothers about the composition of breast milk and the importance of exclusive breastfeeding for the first 6 months.
It is a key nursing responsibility to advise parents that after 6 months, complementary foods rich in iron should be introduced to prevent iron-deficiency anemia in breastfed infants.
What if? If an infant is born prematurely, their iron stores are lower than a full-term infant's. In this case, a pediatrician may recommend iron supplementation even earlier than 4-6 months, and the nurse must ensure the parents understand and adhere to this.

How to Approach the Question

First, identify the keyword 'EXCEPT'. This indicates that three of the options are true statements (nutrients rich in human milk), and one is false.
Your task is to find the nutrient that is NOT abundant in human milk.
Recall or look up the basic composition of human milk.
Evaluate each option: Is human milk rich in fat? Yes. Is it rich in protein? Yes. Is it rich in carbohydrates? Yes.
Evaluate the final option: Is human milk rich in iron? No, it is known to be a poor source of iron.
The option that is the exception is the correct answer.

Concept Tested & Keywords

Concept Tested: Nutritional composition of human milk
Stem keywords: Human milk, rich in
Lead-in keywords: EXCEPT
Negative lead-in flag: Question is negatively framed and asks for the exception.

Q9OgPb9QfV_Ig6FWUOAKcp

E6 Biochemistry U Satyanarayana 7th Edition — Part 1 (pp 26-420 of 840) p. 420-840

Practise the full AIIMS Raipur - 2017 (Shift-3)

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