Urinary Tract Infections are prevalent in elderly women and anyone using a catheter. There are several bacteria responsible for infecting urinary tracts. One is Escherichia coli, or more widely known as E. coli, and another is a bacteria called Proteus mirabilis. These are the most common but if something can thrive in the environment, and exposure is complete, many more bacteria can infect.
An old wives tale says that cranberries help prevent UTIs and there may be some science to back this up. Cranberries are quite acidic which may move the environment outside E. coli's suitable ranges of acidity. This theory is mostly outdated but may still assist the effects from the other chemistry going on.
If you have a urinary tract infection ask your doctor about antibiotics. There hasn't been any evidence found that supports cranberries as a means of curing or treating a UTI. Even the clinical studies of preventing UTIs with cranberries has been a mixed bag of conclusions. However, physicians continue to prescribe cranberry extract as an over-the-counter supplement to prevent UTIs so the health community on the whole seems to put some faith in it.
Are Cranberries Good for UTI Prevention?
WebMD Medical Reference Reviewed by Carol DerSarkissian on November 21, 2016