(Potential Antitumor Properties of Cannabinoids) "In conclusion, our data indicate that cannabidiol, and possibly Cannabis extracts enriched in this natural cannabinoid, represent a promising nonpsychoactive antineoplastic strategy. In particular, for a highly malignant human breast carcinoma cell line, we have shown here that cannabidiol and a cannabidiol-rich extract counteract cell growth both in vivo and in vitro as well as tumor metastasis in vivo. Cannabidiol exerts its effects on these cells through a combination of mechanisms that include either direct or indirect activation of CB2 and TRPV1 receptors and induction of oxidative stress, all contributing to induce apoptosis."


Ligresti, Alessia; Moriello, Aniello Schiano; Starowicz, Katarzyna; Matias, Isabel; Pisanti, Simona; De Petrocellis, Luciano; Laezza, Chiara; Portella, Giuseppe; Bifulco, Maurizio; and Di Marzo, Vincenzo, "Antitumor Activity of Plant Cannabinoids with Emphasis on the Effect of Cannabidiol on Human Breast Carcinoma," The Journal of Pharmacology and Experimental Therapeutics (Bethesda, MD: The American Society for Pharmacology and Experimental Therapeutics, March 2004) Vol. 318, No. 3, pp. 1386-1387.