"A disease like cancer can be a mortal battle, often fraught with overwhelming stress. Given that stress management can be difficult even under ordinary circumstances, elevated feelings of anxiety and depression in cancer patients are certainly understandable.
This was published in August in PLOS ONE, a scientific journal full of big words which you can read here.
Thank you. I am more stressed because you say my stress and depression will kill me. I don't have renal cancer (yet) but I am sure they will do more studies and tell us how it will affect other cancers. You made my day.