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Related Experiment Videos

Cranberries for preventing urinary tract infections.

R G Jepson1, L Mihaljevic, J Craig

  • 115 Blackwood Crescent, Edinburgh, UK, EH9 1QZ. ruthj@ibm.net

The Cochrane Database of Systematic Reviews
|May 5, 2000
PubMed
Summary

Cranberry products show some effectiveness in preventing urinary tract infections (UTIs), but the evidence is limited due to poor-quality studies. Further research is needed to confirm cranberry

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Area of Science:

  • Urology
  • Infectious Diseases
  • Nutritional Science

Background:

  • Cranberries have a long history of use for preventing and treating urinary tract infections (UTIs).
  • This review aims to evaluate the efficacy of cranberry products in UTI prevention.

Purpose of the Study:

  • To assess the effectiveness of cranberry juice and other cranberry products in preventing urinary tract infections (UTIs).
  • To evaluate cranberry product efficacy in susceptible populations.

Main Methods:

  • Searched electronic databases, the internet, and contacted manufacturers for relevant studies.
  • Included randomized or quasi-randomized controlled trials of cranberry products for UTI prevention in all age groups.
  • Independently extracted data on trial methods, participants, interventions, and outcomes; statistical analysis was not performed due to data limitations.

Main Results:

  • Four trials met inclusion criteria (three crossover, one parallel).
  • Three trials suggested cranberry products were effective for at least one outcome.
  • The overall quality of the included trials was poor, questioning the reliability of the results.

Conclusions:

  • Limited, low-quality trials provide no reliable evidence for cranberry product effectiveness in UTI prevention.
  • High dropout rates suggest cranberry juice may have poor long-term adherence; capsules might be more acceptable.
  • Cranberry juice is not recommended for UTI prevention in susceptible populations; further well-designed trials are necessary.

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