Does cranberry juice really help with bladder infections? why? thanks

Yes: It has to do some chemicals in cranberry juice basicay being a natural antibiotic for common bacteria causing UTI's. maybe it gets concentrated in the urine as its excreted by the body. Hope this helps!

Probably not: CJ won't treat or cure urinary tract infection. Whether it helps prevent UTI in women has been researched for decades, with consensus that it slightly reduces risk. But a comprehensive, highly respected review of the world scientific literature in 2012 showed no effect. For sure no effect in males. Bottom line: women, drink CJ if you like it, but don't expect miracles; it won't prevent all UTIs.