How many people have hemophilia?

Blood contains many proteins called clotting factors that can help to stop bleeding. People with hemophilia have low levels of either factor VIII (8) or factor IX (9). The severity of hemophilia that a person has is determined by the amount of factor in the blood. read more

Hemophilia A affects 1 in 5,000 male births in the U.S., and approximately 400 babies are born with hemophilia each year. Four hundred thousand people worldwide are living with hemophilia, and about 20,000 are living with it in the United States. All races and economic groups are affected equally. read more

Hemophilia is a bleeding disorder that slows the blood clotting process. People with this condition experience prolonged bleeding or oozing following an injury, surgery, or having a tooth pulled. In severe cases of hemophilia, continuous bleeding occurs after minor trauma or even in the absence of injury (spontaneous bleeding). read more