Because yogurt is dairy-based, it can go bad if left unrefrigerated for too long.
Yogurt is a dairy product, which tend to go bad faster when not refrigerated. If you eat yogurt that has gone bad, it can lead to digestive issues and diarrhea, says emergencycareforyou.org.
Time Frame
According to Fit Day, most yogurt is pasteurized. If this is the case with your yogurt, it should be fine for several hours without being refrigerated. If your yogurt is not pasteurized, throw it away after one hour outside of the refrigerator. Also pay close attention to the expiration date, which might mean that your yogurt will go bad faster out of the refrigerator, says emergencycareforyou.org.
Probiotics
Some yogurts contain probiotics that aid digestion. According to Nutrition Science News, probiotics die at a faster rate when not refrigerated. Therefore, it's best to avoid yogurt that has been out of the refrigerator for 30 minutes or more. The yogurt itself will be OK to eat; however, you will not reap the benefits of the probiotics, making the yogurt less healthy.
Know if Yogurt Has Gone Bad
If you see mold on your yogurt, do not consume it. If your yogurt seems overly chunky, this is also a sign that it might be going bad. Sometimes your yogurt might also smell sour if it has gone bad; however, this is not always the case, so checking for mold is the most surefire way to know if it's gone bad.
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