Although long-term stress can cause health problems, the relationship between stress and cancer is poor. Some studies have shown an association between stress and increased cancer risk, but other studies have shown that there is no association. It is difficult to determine if stress alone increases the risk of cancer, as many people practice unhealthy behavior to cope with high levels of stress, such as smoking, drinking alcohol, or overeating. These behaviors were associated with an increased risk of certain cancers.  According to the Midline plus Leukemia are the cancer of blood cells and the lymphatic system. According to the American cancer society, the leukemia is the cancer of the white blood cells but sometimes it starts in other cells too. Leukemia usually occurs in white blood cells. White blood cells fight against germs and normally grow as the body needed. But in leukemia bone produce abnormal blood cells which don’t function properly. The treatment of the leukemia is complex depending on the types of leukemia. Let's find out the symptoms and risk factors of leukemia.