“There’s been some interesting research on using THC (tetrahydrocannabinol), the principal psychoactive drug in marijuana, to help fight HIV, and damage cancer cells in some leukemias and possibly malignant tumors.

…the possibility exists that information from both of these research studies may produce beneficial results in the treatment of HIV and cancer.”

More: http://americablog.com/2014/02/marijuana-treatment-hiv-cancer.html