Most frozen yogurt, just like the regular stuff, contains live probiotic cultures. These are good bacteria that can help build a healthy gut, lower blood pressure, and improve your immune system -- your body's defense against germs. The amount of probiotics in a scoop varies. Frozen yogurt often has fewer cultures than the refrigerated version. And some products have no live probiotics at all. If these good bacteria are what you're after, look for a seal that says "Live and Active Cultures." Some frozen yogurts can also be a good source of bone-building calcium.
Learn-more about the health benefits of fro-yo on WebMD.