Brathwaite R, Addo J, Smeeth L, Lock K: A Systematic review of tobacco smoking prevalence and description of tobacco control strategies in sub-Saharan African countries
Social factors, too, play a part
Smoke from marijuana combustion has been shown to contain many of the same toxins, irritants and carcinogens as tobacco smoke
This can lead to bacteria escaping from the gastrointestinal (GI) tract via the intestinal barrier and leaking into the bloodstream, with the effect being an increase in inflammatory influences on the central nervous system
Ligero, the most robust and dense leaf of the Criollo plant, will take the longest to process, while seco and volado will take less
PMID 25343018