Leukemias are a group of cancers that affect the blood and bone marrow. They occur when the body produces abnormal white blood cells, which can interfere with the production of normal blood cells. This can lead to symptoms such as fatigue, frequent infections, and easy bruising or bleeding. There are several types of leukemia, including acute lymphoblastic leukemia (ALL) and chronic myeloid leukemia (CML). Treatment options vary depending on the type and stage of leukemia and may include chemotherapy, radiation therapy, or stem cell transplants. Early diagnosis and treatment are crucial for improving outcomes.