You might have heard that cranberries help prevent urinary tract infections (UTIs). But are these berries really as medicinal as they are tart and tasty?
The research on this isn’t totally clear. Some studies have found that drinking cranberry juice or taking cranberry pills can prevent UTIs, especially in women who are at risk for these infections. But others haven’t come to that conclusion.
Cranberries don't seem to work for everyone. And they don’t treat UTIs that you already have.
The American College of Obstetrics and Gynecology says that unsweetened cranberry juice and cranberry supplements may make UTIs less likely, but that it’s not yet clear how much you need to take and for how long.
How Might It Work?
But now, researchers have a different theory: that cranberries make it harder for infection-causing bacteria to stick to the urinary tract walls.
It could be that nutrients in cranberries change the bacteria so that they can't stick to the urinary tract. Or it may be that cranberries create a slippery coating on the urinary tract walls that makes it hard for E. coli to get a good grip.
Keep in Mind
Because of their acidity, cranberries can be hard for some people to take.
Cranberry juice is high in salts called oxalates, which can make kidney stones more likely, especially if you already tend to get these types of stones.
If you like cranberry juice and it doesn't bother your stomach, affect another condition or your meds, it’s an option.
If you decide to take supplements, it’s best to talk to your doctor first.