Eighty percent of the stalk of the plant is hurds, which is the part used in the paper. One acre of cannabis-hemp, would be equivalent to four acres of old growth forest. In order to make paper of tree pulp, it must be soaked in a powerful acid to break down the lignin. This acid the contaminates our environment. Tree paper is also whitened with bleach, another pollutant.
Hemp contains no lignin, and whitens much easier.
Hemp paper also lasts much longer. It does not harden, crack, or crumble with age, and it was used to write the US Declaration of Independence, and the US Constitution. Marijuana has had a long history of use as a medicine. In Thailand, It is used in official medical reports to treat migraines. The drug THC is the key element in marijuana and far as medicinal purposes are concerned.