Why does leukemia suddenly cause overall weakness in the body?

Leukemia patients may suddenly feel weak throughout their body, mainly due to the following reasons: 1. **Anemia Complication**: Leukemia affects the bone marrow and blood, leading to an increase in abnormal white blood cells, which in turn interferes with the production of normal blood cells, including red blood cells. Anemia is one of the common complications of leukemia. The reduced hemoglobin levels impair the blood's ability to transport oxygen, causing insufficient oxygen supply to various tissues and organs in the body, thereby resulting in weakness and fatigue. 2. **Impact of the Disease Itself**: As a malignant tumor, leukemia itself consumes a large amount of energy from the patient, leaving the body in a weakened state. 3. **Treatment Side Effects**: Treatments for leukemia, such as chemotherapy, may cause side effects like nausea and vomiting, further exacerbating the patient's sense of fatigue. If such symptoms occur, patients should seek medical attention promptly to evaluate their condition and adjust their treatment plan.