Cancer related to blood cells is called as Leukemia. Under Leukemia condition, bone marrow produces abnormal cancerous blood cells that crowd out the normal and healthy blood cells. Leukemia is of different types based which blood cell type has become cancerous. White blood cells are more to prone to become cancerous than RBCs and platelets. Leukemia can be acute or chronic and Lymphocytic or Myelogenous. It occurs most commonly in adults above 55 years and children younger than 15 years. The treatment methods used depend on the blood cell affected and whether the leukemia is acute or chronic or Lymphocytic or Myelogenous. Chemotherapy is frequently used to treat leukemia. More than 327,520 Americans are living with leukemia. Leukemia causes more deaths than any other cancer among children and young adults under the age of 20; however, leukemia is diagnosed 10 times more often in adults than children. Every day 148 Americans are diagnosed with leukemia and 67 lose the fight. Leukemia is the most common cancer in Hispanic children and adolescents; five-year relative survival rate is slightly lower for Hispanics than that of non-Hispanic whites.