In 2014, A survey of cannabis use and self-reported benefit in men with chronic prostatitis/chronic pelvic pain syndrome

BACKGROUND: Participants were recruited from an outpatient CP/CPPS urology clinic and online through the Prostatitis Foundation website. Participants completed questionnaires.

You can read the full article here => https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4277530/