I have heard Xylitol can prevent ear infections – how does that work?

In well controlled studies, doctors in Finland found that 8 grams of xylitol, taken orally every day, prevented about 40% of ear infections. Before bacteria can cause an infection they have to be able to attach to our body and in many studies Xylitol prevented the germs from sticking to the tissue, meaning that if taken daily, it may be a useful tool in fighting ear infections