A healthy person will have three types of blood marrow running through their body—white blood cells to fight infection, red blood cells which carry oxygen and platelets which helps blood to clot. When a person has leukemia, they have a cancer of the healthy blood cells. It typically starts in the bone marrow (called leukemia cells), essentially where the blood cells are made. Leukemia can lead to a wide array of serious blood-related infections including anemia, bleeding, fever, headaches, swollen lymph nodes and more.  There are four distinct variations of leukemia (acute or chronic myelogenous leukemia and acute or chronic lymphocytic leukemia)—some affecting children, some striking only the elderly. Ultimately, depending on the age of the patient and the type of leukemia he or she has will determine the course of treatment.

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