Cranberry likely has antibacterial, antioxidant and anti-inflammatory properties, according to Memorial Sloan-Kettering Cancer Center. Cranberry contains compounds called proanthocyanidins that keep E. coli and other bacteria from binding to urinary tract cells, which could prevent infections. Cranberry may also be beneficial for prostate cancer and prostatitis, an infection of the prostate gland more common in men with enlarged prostates
Cranberry may reduce the risk of urinary tract infections in men undergoing radiation treatment for prostate cancer, determined a study published in the August 2012 edition of "Cancer Management and Research." Another study in a 2011 issue of "Nutrition and Cancer" found phytochemicals in cranberry induced cell death in prostate cancer cells, possibly making it effective in preventing prostate cancer.
Cranberry changes the pH of urine and can be an effective complementary treatment for prostatitis, reports "The Truth About Prostate Health and Prostate Cancer." Mark Stengler, author of "The Natural Physician's Healing Therapies," advises cranberry also prevents prostate infections by its ability to block E. coli, the primary bacteria responsible for causing prostatitis.