Babies are not able to make vitamin K on their own and they are born with very small amounts in their bodies. Vitamin K is a very important nutrient which is needed for blood clotting so that bleeding stops. We get vitamin K from food and it is also made by the healthy bacteria that live in the intestines. However, when a baby is born, his intestinal tract does not have enough healthy bacteria to produce sufficient amounts of vitamin K. Vitamin K is not easily transmitted from mother to baby during pregnancy either. And although he can receive some vitamin K from breast milk, it is not enough. It takes a while for your baby to start producing his own vitamin K. Therefore, receiving a shot of vitamin K immediately after birth helps your baby’s blood to coagulate and clot. This assists in protecting against possible abnormal bleeding in the body.
If a baby does not receive a vitamin K shot soon after birth, he may be at risk for a condition called Vitamin K deficiency bleeding or VKDB. This occurs when a baby does not have enough vitamin K and his blood cannot clot. Not getting enough vitamin K puts your baby at risk for bleeding into his intestines or even brain. Babies who do not receive the vitamin K shot after birth are actually at risk for VKDB until they are six months old.