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The question is no longer which disease cannabis can cure, but which disease can’t it cure? A study published in Nature Reviews-Cancer provides an historic and detailed explanation about how THC and natural cannabinoids counteract cancer, but preserve normal cells.
The study by Manuel Guzman of Madrid Spainfound that cannabinoids, the active components of marijuana, inhibit tumor growth in laboratory animals. They do so by modulating key cell-signalling pathways, thereby inducing direct growth arrest and death of tumor cells, as well as by inhibiting the growth of blood vessels that supply the tumor.
The Guzman study is very important according to Dr. Ethan Russo , a neurologist and world authority on medical cannabis: “Cancer occurs because cells become immortalized; they fail to heed normal signals to turn off growth. A normal function of remodelling in the body requires that cells die on cue. This is called apoptosis, or programmed cell death. That process fails to work in tumors. THC promotes its reappearance so that gliomas, leukemias, melanomas and other cell types will in fact heed the signals, stop dividing, and die.”