Which statement best describes colostrum?

• A. Colostrum is the initial thick yellowish milk rich in immunoglobulins.
• B. Colostrum is not produced until after birth.
• C. Colostrum is the same as mature milk.
• D. Colostrum is low in immunoglobulins.

Answer: (B)

Colostrum is the first form of milk produced by the breasts, starting in late pregnancy and continuing for the first few days after birth. It’s a thick, yellowish fluid that is high in antibodies, especially IgA, and rich in protein and minerals but low in fat. This early milk provides passive immunity to the newborn and supports gut mucosal development; it also helps gently stimulate bowel movements to pass meconium.

The idea that colostrum is not produced until after birth is inaccurate because production begins before birth and continues after birth, fading as mature milk comes in a few days postpartum. Mature milk then provides the higher-volume, fat- and lactose-rich nutrition the baby needs moving forward.