What component of breast milk is typically produced after colostrum?

• A. Mature milk
• B. Transitional milk
• C. Whole milk
• D. Fat-free milk

Answer: (B)

The component of breast milk that typically follows the production of colostrum is transitional milk. After the initial days postpartum when colostrum—a thick, yellowish fluid rich in antibodies and nutrients—is produced, the mother's milk gradually shifts to transitional milk. This phase usually occurs around the second to fifth day after birth and lasts for about two weeks. Transitional milk contains more fat, calories, and lactose than colostrum, supporting the growing infant's nutritional needs as their digestive system begins to adjust to a more mature milk composition.

Mature milk, which is produced after the transitional period, contains the final balance of nutrients necessary for the baby, but it comes later in the breastfeeding timeline. Whole milk and fat-free milk are not components of human breast milk; they refer to types of bovine milk, which are not appropriate for infants until they reach a certain age and nutritional readiness.