Can marijuana cure cancer

No, nothing "cures" cancer. The US. Food and Drug Administration has not approved Cannabis as a treatment for cancer or any other medical condition, although chemical components of Cannabis, called cannabinoids, activate specific receptors found throughout the body to produce pharmacological effects, particularly in the central nervous system and the immune system.

Potential benefits of medicinal Cannabis for people living with cancer include antiemetic effects, appetite stimulation, pain relief, and improved sleep. Commercially available cannabinoids, such as dronabinol and nabilone, are approved for the treatment of cancer related side effects.

Cannabinoids may cause anti-tumor effects by various mechanisms, including induction of cell death, inhibition of cell growth, and inhibition of tumor angiogenesis invasion and metastasis. Cannabinoids appear to kill cancer cells while protecting normal cells from cell death.

Unconventional cancer treatments have varying success levels on different cancers, but so do conventional treatments. As for whether you will find a qualified doctor that would prescribe (where legally allowed) marijuana as the sole cancer treatment, it is not likely. As for prescribing it in conjunction with other treatments, yes. In these circumstance it is usually used for it's anti-nausea effects and not for its cancer fighting ability. The nausea is created by chemo and radiotherapy.