[Citation needed.] How many instances in a sampling size? How large was the sampling size? How rigorous was the study? Peer reviewed? Publisher? Offhand, I ca

[Citation needed.] How many instances in a sampling size? How large was the sampling size? How rigorous was the study? Peer reviewed? Publisher? Offhand, I can immediately tell you the overwhelming evidence is that tobacco (cigarettes) is far more harmful than cannabis. I direct your attention to the myth of cannabis being as harmful as x number of cigarettes[1] and the myth that cannabis harms brain cells[2]. While it does alter the brain, it is up for heavy debate whether it's harmful, especially on long-term use. [1]: http://en.wikipedia.org/wiki/List_of_misconceptions_about_illegal_drugs#Marijuana_causes_cancer.3B_e.g..2C_one_joint_equals_a_whole_pack_of_cigarettes http://en.wikipedia.org/wiki/List_of_misconceptions_about_il... [2]: http://en.wikipedia.org/wiki/List_of_misconceptions_about_illegal_drugs#Permanent_memory_loss_or_brain_damage.2Fdestruction_of_brain_cells http://en.wikipedia.org/wiki/List_of_misconceptions_about_il...