Synopsis

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

Anthocyanins, a class of flavonoids responsible for the red, purple, and blue colors in many fruits and vegetables, have been studied for their potential role in supporting urinary tract health, particularly in the context of urinary tract infections (UTIs). The strongest scientific evidence relates to anthocyanins found in cranberries (Vaccinium macrocarpon). Several clinical and laboratory studies suggest that cranberry-derived anthocyanins and their related proanthocyanidins can inhibit the adhesion of Escherichia coli (the primary bacteria responsible for UTIs) to the uroepithelial cells lining the urinary tract. This anti-adhesive property may help prevent the initial stages of infection, though it does not treat active infections.

However, the overall quality of evidence is moderate and somewhat inconsistent. Some randomized controlled trials have shown that cranberry products (which contain anthocyanins as well as other polyphenols) can modestly reduce the risk of recurrent UTIs, particularly in women with frequent episodes. Other studies have failed to find significant benefits. It is also difficult to isolate the effects of anthocyanins from other cranberry components, such as proanthocyanidins, which are more directly implicated in anti-adhesive effects.

In summary, the use of anthocyanin-rich foods, especially cranberries, for UTI prevention is supported by a moderate level of scientific evidence, but anthocyanins alone are likely not the sole active ingredient. They may play a supporting role, but more research is needed to clarify their specific contribution apart from other phytonutrients.

More about anthocyanins
More about Urinary Tract Infections

Other ingredients used for Urinary Tract Infections

Other health conditions supported by anthocyanins

Products containing anthocyanins