Causes

• Any disruption to the lymphatic system can causes lymphedema. The most common cause involves cancer treatments including the removal of lymph nodes. The body attempts to adjust to the missing nodes but sometimes it becomes overwhelmed by processing lymph fluids. This results in the typical swelling seen with lymphedema. Radiation therapy and surgery often result in lymphedema. Invasive procedures can cause damage to the lymphatic drainage pathways that might seem minuscule but really aren't. You body will try to constantly cleanse cells through the lymphatic system, even when parts of it are missing.
  
  

Why Exercise?

• Lymph node removal and subsequent lymphedema creates discomfort for the patient. This discomfort leads to a natural reaction to protect the arm or leg suffering the swelling. Adjusting to the need to use a sore arm or leg requires a realization that exercise can really improve lymphedema. Exercise stimulates the flow of lymphatic fluids throughout the body, helping dispersal occur more rapidly.
  
  

Specific Exercises

• Deep abdominal breathing is a must for any lymphedema sufferer, according to The Abramson Cancer Center of the University of Pennsylvania. Deep breathing exercises stimulate the diaphragm to help create a pumping action for the lymphatic system. This transmits lymphatic fluid throughout the body rather than allowing it to pool in a single area.
  
  Exercise also stimulates joints and muscles, increasing range of motion especially after surgery. In the case of mastectomy, women often lose the lymph nodes under the arms. This results in decreased backward extension of the affected arm. Exercises include light lifting, aerobic exercise to stimulate the whole body and gentle stretches for the shoulder joints. Heavy lifting isn't a good idea. Excessive weight can bring on increased swelling. Your physician should guide any exercise plan. A physical therapist trained in lymphedema exercise and management can also create an exercise plan tailored to your fitness level and the severity of your swelling.