What makes cranberry juice a good cure for a urinary tract infection?!
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The type of sugar in the cranberry juice makes it difficult for the bacteria to adhere to the surface of your urinary tract. They slide off and exit your body through the urine.
Note that pineapple juice also has high concentrations of this type of sugar.
It has to be pure juice, btw. Mixed juices and brands that are watered down and have sugar (a different type of sugar that has no effect on urinary tract bacteria) are completely ineffective. Pure cranberry or pure pineapple juice are what you want.
Other Answers:
Highly acidic.
It was thought that the acid in the juice killed the bacteria in the urinary tract.
Drinking concentrated cranberry extract and pure, unsweetened cranberry juice appears to help prevent UTIs. It is possible that a substance found in cranberry and blueberry juices (members of the same berry family) prevents bacteria from attaching to the urinary tract lining. If bacteria are unable to attach, they are more easily washed out when you urinate and are less likely to cause an infection.
While these berries may help prevent a UTI, there is no evidence that they can cure a UTI. Research shows that the substance in the berries does not kill the bacteria.
You can take cranberry extract or drink pure, unsweetened cranberry juice to help prevent UTIs. Two glasses of cranberry juice a day can help prevent urinary infections.
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