Drinking spoiled yogurt can lead to: 1. gastrointestinal symptoms such as acute gastroenteritis or acute intestinal spasm, gastrointestinal colic, nausea, vomiting, abdominal distension, abdominal pain, constipation, especially the colic around the umbilicus, and diarrhea, mucopurulent stools or thin stools. 2. drinking too much spoiled yogurt can also occur, for example, acute food poisoning, which can lead to pallor or cyanosis, abdominal distension, diarrhea, watery stools, and even upper gastrointestinal bleeding and blood in the stool, Diarrhea, watery stools, and even upper gastrointestinal bleeding and blood in the stool may occur. In severe cases, there may be chest tightness, shortness of breath, palpitations, arrhythmia, precordial discomfort, dyspnea, and in more severe cases, neurological problems such as hand numbness and resting tremor.