The cancer-fighting properties of cannabis have been known since 1974. According to a 1974 study, published in The Washington Post, cannabis’s THC, “slowed the development of lung cancers, breast cancers and a virus-induced leukemia in lab mice, and lengthened their lives by as much as 36 percent.” An article titled Antineoplastic Activity of Cannabinoids published in the Journal of the National Cancer Institute in 1975 reported that “Lewis lung adenocarcinoma growth was retarded by the oral administration of tetrahydrocannabinol (THC) and cannabinol (CBD). Mice treated with THC for 20 successive days with THC and CBD had reduced main growth size.”
In 1998, researchers from the Complutense University in Madrid, led by Dr. Manuel Guzman, revealed that THC can selectively induce configured cell death in brain tumor cells leaving the surrounding healthy cells intact. The team reported in Nature Medication in March 2002 they had managed to destroy “incurable” brain cancer tumors in rats by injecting them with THC.
In 2007, a Harvard scientist found that compounds in marijuana can prevent lung cancer development. The SETH Group (Scientists Exploring Truth in Healing) also found that substances in cannabis can inhibit the development of human glioblastoma multiforma (GBM) brain cancer cells. According to the SETH Group, “No chemotherapy can match this nontoxic anti-cancer action.” Last, but, not least, in 2012 a group of researchers at California Pacific Medical Center in San Francisco found that THC inhibits development of many types of aggressive cancer.
Watch the video below to see how the active component in marijuana, THC, kills cancer cells: