A Comparative Literature Review in 2017 found a potentially positive effect of acupuncture in treating cancer pain. ( McDonald JL, 2017)

A systematic review found acupuncture may help with cancer pain. The results demonstrated for the first time that acupuncture and/or acupressure were significantly associated with the reduction of cancer pain and the use of analgesics, compared with sham acupuncture. (Zhang, 2019)

Acupuncture has been demonstrated to reduce activity in the parts of the brain associated with the perception of pain and increase activity in brain areas associated with improved self-regulation. (He, 2015)

McDonald JL, Janz S. The Acupuncture Evidence Project. February 2017:1-81. http://www.acupuncture.org.au/OURSERVICES/Publications/AcupunctureEvidenceProject.aspx.

He Y, Guo X, May BH, et al. Clinical Evidence for Association of Acupuncture and Acupressure With Improved Cancer Pain: A Systematic Review and Meta-Analysis. JAMA Oncol. Published online December 19, 2019. doi:https://doi.org/10.1001/jamaoncol.2019.5233

He T, Zhu W, Du S-Q, et al. Autonomic Neuroscience: Basic and Clinical. Autonomic Neuroscience: Basic and Clinical. 2015;190(C):1-9. doi:10.1016/j.autneu.2015.03.006.