Cannabis plant extract 'could stop aggressive cancers from spreading'

A compound found in cannabis could halt the spread of many forms of aggressive cancer, scientists say.
Researchers found that the compound, called cannabidiol, had the ability to 'switch off' the gene responsible for metastasis in an aggressive form of breast cancer. Importantly, this substance does not produce the psychoactive properties of the cannabis plant.
The team from the California Pacific Medical Center, in San Francisco, first spotted its potential five years ago, after it stopped the proliferation of human breast cancer cells in the lab. Last year they published a study that found a similar effect in mice. Now they say they are on the verge of publishing further animal study results that expand these results further.
Speaking to the San Francisco Chronicle, study co-leader Dr Sean McAllister, said: 'The preclinical trial data is very strong, and there's no toxicity. There's really a lot or research to move ahead with and to get people excited.'