The Early Immune System

Part of giving your baby the best possible start in life is helping it develop a strong and capable immune system.

Our immune system develops over our lifetime, providing us with immunity against diseases and infections that we encounter as we age.

For the last 3 months of pregnancy, antibodies (molecules that help fight off infection) are transferred through the placenta from you to your baby, providing them with passive immunity against some infections at birth.1

This is what makes breastfeeding so important: antibodies continue to be passed from you to your baby through breast milk.1

5.1-1 Antibodies

Antibodies are first passed to a baby during the final 3 months of pregnancy

5.1-2 Colostrum

Colostrum (first milk) provides antibodies during the first few days after birth

5.1-3 Breast milk

Breast milk continues to provide passive immunity as your baby’s immune system develops

arrow arrow

Breast milk contains a number of components that help support a baby’s developing immune system, one of them being human milk oligosaccharides (HMOs) which form the 3rd most abundant solid component in most mother’s milk.2

Learn more about HMOs and how they support the immune system

UK-SIMILAC-2000018 November 2020