What is vitamin k? what does it do in our body?

Helps blood clot: Vit K is necessary in the cascade for clotting. Infants dis not have enough Vit K in the old days and would present with fatal hemorrhaging at 7-8 days-called Hemmorhagic Disease of the Newborn. Fortunately this is rarely seen today. There is tremendous benefit at birth where the recommendation is for an injection of 1 mg right after birth.