For many years, cranberry juice has been recommended to help prevent and treat urinary tract infections. Researchers have now discovered how cranberry juice works to avoid bacterial infections, such as Staphylococcus aureus (S. aureus). In urine samples collected from those who drank cranberry juice, the bacteria were not able to link together and form a film or stick to the wall of the container. This process is calld “biofilm formation.” When bacteria cannot stick together, they are more likely to be flushed out during urination instead of creating an environment for the bacteria to thrive.
The bottom line? Future studies may lead to attempts to engineer invasive medical tools such as catheters, cannulae and others to make them more bacteria-resistant.