Citing a research of adolescents, it was observed that after a 5-yr stick to-up, there was a dose-dependent relationship among marijuana use and prefrontal cortex thinning. Having said that, other reports observed no proof that Mind volumes ended up associated with cannabis use period or dosage.Cannabis sativa stem longitudinal section The term hem

Cannabis probable split from its closest relative, Humulus (hops), in the course of the mid Oligocene, around 27.eight million decades back In line with molecular clock estimates. The centre of origin of Cannabis is likely while in the northeastern Tibetan Plateau. The pollen of Humulus and Cannabis are very identical and tough to differentiate.Onl