Cranberry Powder Prevents Bacterial Adhesion, And Therefore Infections, In Urinary Tract

April 14, 2010: 07:22 PM EST

Scientists have assumed for some time that drinking cranberry juice containing at least 36 milligrams of the antioxidant and flavonoid known as proanthocyanidin every day seems to prevent urinary tract infections (UTI). But inconsistent test results from nonstandard cranberry powder samples led European and U.S. researchers to search for the optimum level of cranberry antioxidants that prevents UTI. In this study, volunteers in Japan, Hungary, France and Spain who had been exposed to toxic bacterial strains, including E. coli, ingested various dosages of standardized cranberry powders each day. The researchers found that taking 72-milligram capsules of cranberry powder prevented bacteria from sticking to urinary tract tissues. According to the researchers, “Since bacterial adhesion is the primary step in initiation of UTI, consumption of cranberry may offer an additional means to help prevent infections.”

Amy B Howell , Henry Botto , et al. , "Dosage effect on uropathogenic Escherichia coli anti-adhesion activity in urine following consumption of cranberry powder standardized for proanthocyanidin content: a multicentric randomized double blind study", BMC Infectious Diseases 2010, 10:94doi:10.1186/1471-2334-10-94, April 14, 2010, © Howell et al., licensee BioMed Central Ltd.

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Cranberry Powder Prevents Bacterial Adhesion, And Therefore Infections, In Urinary Tract

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