Leukemia is a cancer of the blood or bone marrow. Bone marrow produces blood cells. Leukemia can develop because of a trouble with blood cell production. It commonly affects the leukocytes, or white blood cells. Leukemia develops when the DNA of developing blood cells, mainly white cells, incurs damage. This reasons the blood cells to grow and divide uncontrollably. Healthy blood cells die, and new cells update them. These develop inside the bone marrow. The abnormal blood cells do no longer die at a herbal factor in their existence cycle. Instead, they increase and occupy extra space. As the bone marrow produces greater cancer cells, they start to overcrowd the blood, preventing the healthful white blood cells from growing and functioning normally. Eventually, the cancerous cells outnumber healthy cells inside the blood. If you or your baby has some or all the signs and symptoms listed in this page, it's still exceptionally unlikely that acute leukaemia is the cause. However, see a GP as quickly as possible because any situation that reasons these symptoms wishes prompt investigation and treatment.