Cannabis use is associated with reduced incidences of bladder cancer, according to a study published in the February issue of the journal Urology.
For the study, researchers “evaluated the records of 84,170 participants in a multiethnic cohort of men aged 45-69 years”, and used the data to investigate the association of cannabis use and tobacco smoking on the risk of bladder cancer.
Researchers determined that a history of cannabis use was associated with a decreased risk of bladder cancer, whereas tobacco use was associated with an increased risk.
“After adjusting for age, race or ethnicity, and body mass index, using tobacco only was associated with an increased risk of bladder cancer (hazard regression 1.52) whereas cannabis use was only associated with a 45 percent reduction in bladder cancer incidence (HR 0.55),” says Dr. Anil A. Thomas, the study’s lead researcher.
Thomas concludes that although a cause and effect relationship has not been established, “cannabis use may be inversely associated with bladder cancer risk”.
The study, which can be found by clicking here, was conducted at the Kaiser Permanente Los Angeles Medical Center, Department of Neurology.