Key Findings:  Using tobacco only was associated with an increased risk of bladder cancer, whereas cannabis use only was associated with a 45% reduction in bladder cancer incidence
Type of Study:  Meta-analysis
Study Result:  Positive
Research Location(s):  United States
Year of Pub:  2015
Cannabinoids Studied:  Cannabinoid (unspecified)
Phytocannabinoid Source:  Not Applicable
Citation:  Thomas AA, et al. Association between cannabis use and the risk of bladder cancer: results from the California Men's Health Study. Urology. 2015; 85:388-92. doi: 10.1016/j.urology.2014.08.060
Authors:  Thomas AA, Wallner LP, Quinn VP, Slezak J, Van Den Eeden SK, Chien GW, Jacobsen SJ