Older adults are at risk of developing leukemia. The common factors of leukemia in the elderly include physiological factors, physical and chemical factors, and disease factors. 1. Physiological factors: with the increase of age, the body function of the elderly decreases, immunity is weakened, and the possibility of viral infection increases, so it is possible to get leukemia. 2. Physical and chemical factors: Older people who are exposed to ionizing radiation such as X-rays and γ-rays in large doses or benzene for a long period of time will also lead to a greater possibility of developing leukemia. 3. Disease factors: If you have lymphoma, myelodysplastic syndrome, multiple myeloma and other diseases, you may also develop leukemia. Leukemia may develop at all ages. Once anemia, fever, bleeding and other symptoms occur, you should go to the hospital in time to find out the cause and carry out targeted treatment under the guidance of physicians.