There are now some very enlightened contemporary integrative medicine therapies for cancer, I am happy to report. In addition to starting with and sticking to the medical treatment…chemo, radiation, surgery, bone marrow transplant, stem cellsl, etc, places like Dana-Farber in Boston stress the three-pats of alternative treatment.
http://www.dana-farber.org/Adult-Care/Treatment-and-Support/Patient-and-Family-Support/Zakim-Center-for-Integrative-Therapies.aspx
1) Nutrition
2) Exercise
#) Stress and anxiety reduction…particularly acupuncture, massage and reiki.
I have a friend being treated for ovarian cancer and she has had some free reiki during her chemo sessions…provided by her Oncology Center. She is also going to an acupuncturist once a week (who throws in a mini-scalp, facial and upper back massage). She does not report being clinically depressed…just some moments of three-o’clock-in-the-morningitis.
Her Oncology Center has an 800 number where a patient can call at any time with any kind of question and get a call-back within 30 minutes, if it is urgent…day, night and week-ends. This provides a huge relief from anxiety. She has also been provided with her own Nurse-Navigator for all the bureaucratic, procedural and similar non-urgent questions.
How you can unbraid the neuroscience and chemistry from all this is beyond my ken…I am sure that the scientific studies can easily be found. (Is this what your question is asking about?)