But what actually happens when you eat cranberries regularly? The nutrients in cranberries may help protect against diseases like:Heart diseaseObesityPeriodontitis, or gum diseaseTooth decayType 2 diabetesUrinary tract inflammation4. Improve Heart HealthCranberry juice can protect your heart health. Potentially Prevent UTIsThough more research is needed, some evidence suggests that cranberries may prevent bacteria from sticking to your urinary tract. A Quick ReviewIncorporating fresh, frozen, or dried cranberries into your daily meals and snacks can maximize their possible benefits.