Well the saying that cannabis is toxic is one the greatest leis in medical history. And it is a well known fact, that cannabis wasn't only used for its health benefits, coming out of the nutritiant seeds and the cannabinoids, but also to make oil, paper, ropes and lots of other stuff. And that's why it was actually forbidden, because the chemical oil industry, the pharma industry and the paper industry didn't want their "new" industrial products dismissed. So the used their influence and banned it as a whole. If you want to know more details just let me know!