International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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Does lactose in human milk aid in calcium absorption?

Yes
No
Only in infants
Only in adults

The correct answer is: Yes

Lactose in human milk does indeed play a significant role in aiding calcium absorption. This disaccharide sugar found in human milk not only serves as an energy source for infants but also enhances the solubility and absorption of calcium in the intestine. The presence of lactose increases the availability of calcium from the digestive tract, which is particularly important for infants who are in a crucial period of growth and development. Moreover, lactose helps to create an optimal environment in the gut that fosters the development of beneficial gut bacteria, further supporting nutrient absorption, including that of calcium. This relationship is vital for promoting healthy bone development and overall growth in infants, which illustrates why lactose has this beneficial effect.