Can expired yogurt that hasn't been opened still be consumed after 5 days past the expiration date?

Yogurt that has expired by 5 days but remains unopened can generally still be consumed if it shows no signs of spoilage or off odors. However, if bacterial growth has occurred and the yogurt has developed an unusual smell or other signs of spoilage, it should not be consumed.

If yogurt has expired within 5 days but remains unopened, and has been stored properly with the packaging intact and no noticeable off odors, discoloration, or mold upon opening, it is generally still safe to consume. This is because yogurt naturally contains lactic acid bacteria, which can, to some extent, inhibit the growth of harmful bacteria, thereby extending the shelf life of yogurt.

It should be noted, however, that after the expiration date, the activity and number of probiotics in the yogurt may gradually decrease, leading to a reduction in its nutritional value. Expired yogurt may also produce harmful substances, such as bacteria and mold, which may cause unusual odors or spoilage. In such cases, it should not be consumed. Drinking spoiled yogurt may irritate the gastrointestinal mucosa and cause discomfort symptoms such as abdominal pain, diarrhea, and vomiting.

When purchasing yogurt, it is recommended to carefully check the production date and expiration date, and consume it within the shelf life. Yogurt should be stored at the appropriate temperature. If the yogurt has an off odor, shows signs of spoilage, or has expired, it should be discarded immediately and not consumed further.