What is the term for the first milk produced after childbirth?

Colostrum is the term for the first milk produced after childbirth. This initial secretion is vital for the newborn as it is rich in antibodies, protein, and essential nutrients, providing crucial immune protection and promoting healthy growth and development. Colostrum is produced in the first few days postpartum and is usually thick and yellowish in color, distinguishing it from mature breast milk, which develops later.

The composition of colostrum is specifically designed to meet the unique needs of a newborn. It is lower in fat and higher in carbohydrates and protein compared to later breast milk, which is essential in the infant's early days when their digestive system is still maturing. The presence of immunoglobulins, particularly IgA, helps to protect the newborn's intestines and provides passive immunity against infections.

In contrast, terms like formula relate to commercially prepared milk substitutes designed for feeding infants who are not breastfed. Breast milk refers to the fluid produced later in the lactation process, while foremilk describes the initial milk let down during breastfeeding, which is higher in lactose and provides hydration, but is not the first milk produced after childbirth. Understanding these distinctions highlights the importance of colostrum as an integral part of the breastfeeding process in a newborn's health.