"Overall, the risk of a crash was almost 2.7 times higher among marijuana users than non-users, the authors found." But weed aint weed. A mycotoxin-laced indica grown on soil does not have the same effects as a clean aeroponic sativa or CBD strains that dont even affect the cannabinoid receptor (http://420.at/receptor). It's like saying high fat diets are x times as bad as "norml diets".