Mounting evidence shows 'cannabinoids' in marijuana slow cancer growth, inhibit formation of new blood cells that feed a tumor, and help manage pain, fatigue, nausea, and other side effects. Peer-reviewed studies in several countries ... show that THC and other marijuana-derived compounds, known as cannabinoids," are effective not only for cancer-symptom management (nausea, pain, loss of appetite, fatigue), they also confer a direct antitumoral effect. A team of Spanish scientists led by Manuel Guzman conducted the first clinical trial assessing the antitumoral action of THC on human beings. THC treatment was associated with significantly reduced tumor cell proliferation in every test subject. Harvard University scientists reported that THC slows tumor growth in common lung cancer and "significantly reduces the ability of the cancer to spread." What's more ... THC selectively targets and destroys tumor cells while leaving healthy cells unscathed. Conventional chemotherapy drugs, by contrast, are highly toxic; they indiscriminately damage the brain and body. There is mounting evidence ... that cannabinoids "represent a new class of anticancer drugs that retard cancer growth, inhibit angiogenesis [the formation of new blood cells that feed a tumor] and the metastatic spreading of cancer cells." Within the medical science community, the discovery that cannabinoids have anti-tumoral properties is increasingly recognized as a seminal advancement in cancer therapeutics.