Tonsil stones are small, common, and easy to mistake for something more serious. Hari and Dr. Priyanka break down how these little balls of trapped debris form in the tonsils, why they can cause bad breath and throat irritation, and what makes some people more prone to them. They also cover how to prevent them, what you can safely do at home, and why you should resist the urge to go digging around your throat with a Q-tip.