Urinary Tract Infection (UTI) Prevention
Study Design: A randomized, double-blind, placebo-controlled clinical trial evaluated the effects of cranberry juice consumption on the prevention of recurrent urinary tract infections.
Findings: Participants who consumed cranberry products experienced a significant reduction in the recurrence of urinary tract infections compared with those receiving a placebo. The effect was attributed to cranberry proanthocyanidins preventing bacterial adhesion to the urinary tract lining. (7)
Antioxidant and Cardiovascular Effects
Study Design: A controlled clinical study investigated the impact of cranberry juice consumption on antioxidant status and cardiovascular risk markers in adults.
Findings: Regular cranberry consumption increased antioxidant capacity and improved markers associated with cardiovascular health, including reduced oxidative stress and improved endothelial function. (8)
Antimicrobial Activity Against Urinary Pathogens
Study Design: Laboratory and clinical research evaluated cranberry polyphenols for their ability to inhibit bacterial adhesion in the urinary tract.
Findings: Cranberry compounds, particularly A-type proanthocyanidins, significantly reduced the ability of E. coli bacteria to adhere to urinary tract cells, supporting their role in UTI prevention. (9)