Homemade yogurt may be overloaded with bacteria, which may cause gastrointestinal symptoms after consumption. Yogurt in the production process may not be suitable temperature or storage environment is not up to standard, easy to make bacteria multiply, after drinking lead to gastrointestinal reactions, such as nausea, vomiting, abdominal pain, diarrhea occurs. In the process of making yogurt, it is necessary to use fresh, high-quality milk, and the milk container needs to be brushed clean and sterilized, which can reduce the growth of bacteria and the occurrence of adverse reactions. Do not store yogurt for too long after production to avoid spoilage. Yogurt is highly nutritious and contains a large number of lactobacilli, which helps intestinal peristalsis. Yogurt contains a relatively high amount of calcium, suitable for all kinds of people to drink. It is recommended to eat yogurt produced by regular manufacturers through a standardized process and try not to make homemade yogurt to avoid adverse consequences. Those who are allergic to milk should not consume yogurt.