Although studies often describe general CAM use, it is essential to consider unique CAM modalities separately ,because they are different in terms of their correlates and efficacy for different conditions. Yoga , CAM modality increasingly used as a treatment ,has been shown to have health benefits for cancer patients and survivors . for example,yoga ,relative to no a no-intervention control, was related to better immune functioning and less fatigue in the in breast cancer survivors . many clinical trials are currently testing yoga interventions for treating symptoms of different types of cancer and various stages of illness and treatment