Evidence supporting the use of: Bacteria (unspecified)
For the body system: Bladder

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Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Bacteria, specifically beneficial strains such as Lactobacillus and Bifidobacterium (commonly found in probiotics), have been studied for their role in supporting bladder health, particularly in the prevention and management of urinary tract infections (UTIs). Scientific research suggests that these probiotics can help restore and maintain a healthy balance of the urogenital microbiota, which may inhibit the growth of pathogenic bacteria like Escherichia coli—the primary causative agent of UTIs. Several clinical trials and systematic reviews have found that oral or vaginal administration of certain probiotic strains can reduce the recurrence rate of UTIs, especially in women. Proposed mechanisms include competitive exclusion of pathogens, production of antimicrobial substances, and modulation of the local immune response.

However, while the evidence is promising, it is not uniformly strong across all probiotic strains or patient populations, and not all bacteria are equally effective for bladder health. Most studies focus on specific strains rather than "unspecified bacteria," so the benefit cannot be generalized to all bacterial supplements. Despite these limitations, the current body of research provides moderate scientific support for the use of select probiotic bacteria in supporting bladder health, particularly for reducing UTI recurrence, justifying a mid-level evidence rating.

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