Yogurt is no longer recommended when it is 10 days past its expiration date. Yogurt is pasteurized in order to retain some of the lactic acid bacteria, and this treatment does not eliminate all bacteria. After the expiration date, harmful bacteria in the yogurt may multiply and the yogurt may appear bloated or with a bulging lid. It is not recommended to drink yogurt that has expired for 10 days to avoid adverse reactions such as affecting digestive system functions, inducing food poisoning and mold infections. 1. Bacterial infection, resulting in abdominal pain, diarrhea, vomiting, electrolyte disorders, and even systemic poisoning symptoms; 2. Inducing food poisoning: after 10 days of yogurt expiration, the pathogenic bacteria are more complex, and food poisoning symptoms such as mental fuzziness, vomiting and diarrhea, and breathing difficulties may occur after drinking. Once this happens, you need to seek medical attention promptly; 3. Induce mold infection: yogurt may have mold and other bacteria after 10 days of expiration, which may induce infection symptoms such as fever and chills after drinking. Once the yogurt is opened in the package, it needs to be consumed in time, and it will deteriorate if left for too long.