A mother notices her milk looks yellowish and more viscous on day 1–2 postpartum. Which milk type is this and what is a key benefit to the newborn?

• A. Colostrum; it is rich in antibodies and proteins that help protect the newborn and help initial gut maturation.
• B. Hindmilk; it is the most watery phase and primarily hydrates newborns in the first hours after birth.
• C. Foremilk; it is high in fat and provides the majority of early caloric needs during the first few days postpartum.
• D. Mature milk; it is identical to formula in composition and thus does not provide any special immune protection.

Answer: (A)