A baby’s immune system in the womb, and shortly after birth, is not yet able to effectively fight against pathogens. The infant is dependent on what is known as “passive immunity”. This protective function is provided by the mother’s antibodies and other immunologically active substances which the baby gets through breast milk. Especially the antibody-rich colostrum, the foremilk, which is produced by the mammary glands in the first hours and days following the birth, contains a particularly high amount of these important antibodies.