001. on the vimeo.com BCNA account there's "Dr. Sanjay Mohan Ram" (2017)(saved 2017-03-12) which tells us:
"adjunctive oncology is the use of naturopathic treatments to help a patient with cancer [...such as] mistletoe injections [...] there are a lot of treatments that are available to a patient who is going through cancer [...] this field of naturopathic medicine, called adjunctive oncology, is and has been proven to be successful [...with the contact being] the BC Naturopathic Association";
so, roughly, a claim proven subset mistletoe injections.
002. yet, the National Cancer Institute, at cancer.gov, states in "Mistletoe Extracts (PDQ®)–Health Professional Version":
"the use of mistletoe as a treatment for people with cancer has been investigated in clinical studies. Reports of improved survival and/or quality of life have been common, but nearly all of the studies had major weaknesses that raise doubts about the reliability of the findings. At present, the use of mistletoe cannot be recommended outside the context of well-designed clinical trials [...]";
that doesn't sound "proven" to me, and it sounds like naturopathy treatment with mistletoe injection is a version of a human experimental trial without all the safeguards needed. Mistletoe was actually dreamed up by Rudolf Steiner. As the great Edzard Ernst wrote in the BMJ in 2006, in "Mistletoe as a Treatment for Cancer": "[it] has no proved benefit, and can cause harm [...] thus, mistletoe has been tested extensively as a treatment for cancer, but the most reliable randomized controlled trials fail to show benefit, and some reports show considerable potential for harm. The costs of regular mistletoe injections are high. I therefore recommend mistletoe as a Christmas decoration and for kissing under but not as an anticancer drug. At the risk of upsetting many proponents of alternative medicine, I also contend that intuition is no substitute for evidence." No, not "proven" at all.