I have been told by an RN who is also does deep tissue massage that it can be a bad thing for those who have cancer. The RN stated that it would cause the spread of cancer cells. I have lung cancer (3rd time) and I was getting massages until the cancer came back. Now I get a cranio (head) massage instead to open up my spinal fluids to flow correctly and to help with the fighting of my cancer. Has anyone else heard on this subject?