Hemophilia is the name of a group of hereditary diseases that affect the body's ability to control blood clotting. Hemophilia is caused by a lack of clotting factors in the blood. Clotting factors are normally released by platelets. Since people with hemophilia cannot produce clots, any cut can put a person at risk of bleeding to death. The risk of internal bleeding is also increased in hemophilia, especially into muscles and joints. This disease affected the royal families of Europe.
Two cousins went for a blood test. Tim found out he had hemophilia, while John was normal. Tim had to start taking medication.
Which cousin doesn't have a lack of clotting factors in the blood?