There are a number of cancers that affect the blood. Our blood is made of different types of blood cells, which are made in the bone marrow in the middle of our bones. There are three main types of blood cells: red blood cells (which carry oxygen), platelets (which help blood to clot), and white blood cells (which fight infection).
When blood cancer occurs, normal blood cell development is affected by the uncontrolled growth of an abnormal kind of blood cell. These cancerous cells stop your blood from performing the functions it's supposed to do, like fighting infections or clotting your blood when you're cut.
Types of blood cancer: