At the moment, there simply isn’t enough evidence to prove that cannabinoids – whether natural or synthetic – works to treat cancer in patients, although research is ongoing. And there’s certainly no evidence that ‘street’ cannabis can treat cancer.
Links
[1] http://scienceblog.cancerresearchuk.org/2012/07/25/cannabis-cannabinoids-and-cancer-the-evidence-so-far/
[2] http://rethinkpot.org/tags/cancer
[3] http://rethinkpot.org/tags/hash-oil
[4] http://rethinkpot.org/tags/research