Evidence supporting the use of: Cranberry
For the body system: Vagina

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Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Cranberry (Vaccinium macrocarpon) is commonly used to support urinary tract health and, by extension, is sometimes marketed for vaginal health, particularly in the context of preventing urinary tract infections (UTIs) that may affect the vaginal environment. The scientific evidence for cranberry's effectiveness centers on its ability to reduce the adhesion of uropathogenic bacteria, such as Escherichia coli, to the lining of the urinary tract due to its proanthocyanidin content. Multiple systematic reviews and meta-analyses (e.g., Cochrane reviews) have shown a modest benefit in reducing the recurrence of UTIs, especially in women with recurrent infections.

However, direct evidence supporting cranberry for general vaginal health—outside of its impact on UTIs—is limited. There are no robust clinical trials demonstrating that cranberry directly supports vaginal flora, pH balance, or other aspects of vaginal health. Most of the use for vaginal health is therefore extrapolated from its impact on UTIs, which can secondarily affect vaginal comfort and health. In summary, while there is some scientific validation for cranberry's use in urinary health, its direct benefit to the vaginal system is not strongly supported by evidence. The overall evidence rating for cranberry in supporting the vaginal body system is therefore moderate to low.

More about cranberry
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Other body systems supported by cranberry

Bladder
Urinary System
Vagina