Cannabinoids may suppress tumor invasion in highly invasive cancers. Cannabinoids, the active components in marijuana, are used to reduce the side effects of cancer treatment, such as pain, weight loss, and vomiting, but there is increasing evidence that they may also inhibit tumor cell growth. However, the cellular mechanisms behind this are unknown. Robert Ramer, Ph.D., and Burkhard Hinz, Ph.D. [click link for full article]