Synopsis

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

Juice, particularly cranberry juice, has a long history of traditional use for the prevention and support in the treatment of bladder infections (urinary tract infections, or UTIs). The tradition stems from the belief that certain juices, especially cranberry, can help "flush out" bacteria from the urinary tract or prevent bacteria from adhering to the bladder wall. This practice has been passed down for generations, especially in North America and Europe.

While the tradition is strong, scientific evidence offers only modest support. Some studies suggest that cranberry juice may reduce the recurrence of UTIs, particularly in women with recurrent infections, due to compounds called proanthocyanidins that may prevent Escherichia coli bacteria from attaching to the urinary tract lining. However, systematic reviews and meta-analyses have concluded that the benefit is small, inconsistent, or not statistically significant. There is little to no traditional or scientific support for the use of other unspecified juices for bladder infections.

In summary, the use of "juice" for bladder infection is primarily rooted in tradition, with cranberry juice being the most notable example. The scientific evidence rates a 2 out of 5, indicating weak or inconsistent support for its efficacy in this context.

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