Factor VIII is a crucial protein in the blood that helps with clotting. It works by assisting another protein called factor X to form a clot when there is an injury. People who have low levels of factor VIII may experience a bleeding disorder known as hemophilia A, which makes it difficult for their blood to clot properly. When someone with hemophilia A gets injured, they may bleed excessively because their body cannot form clots effectively. Treatment often involves infusions of factor VIII to help restore normal clotting ability. This therapy can significantly improve the quality of life for those affected by this condition.