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 (n = 98) and online through the Prostatitis Foundation website (n = 244). Participants completed questionnaires (demographics, CP/CPPS, depression, cannabis).

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