Cannabis The Cannabis plant has been known to help in human’s development for thousands of years. It is known that as long as 13,000 years ago, a man was using fibers from the Cannabis plant to make materials. It is known that for hundreds of years because Cannabis contains THC, that it has been used for medicinal purposes. It is also suspected that because the Cannabis plant is so nutritious, that it has been used as a form of nourishment for much of these periods. The Cannabis plant ...