Did you eat too much lactic acid bacteria?

For healthy people, excessive intake of probiotics in yogurt will damage memory. Researchers at the University of New South Wales, Australia, gave a group of mice a healthy diet, and a group ate a high-sugar and high-fat diet, and then supplemented them with the same dose of yogurt.

The results showed that the mice fed with high-sugar and high-fat diet and yogurt effectively changed the composition of intestinal flora, improved brain function and better memory. But for mice with healthy diet, the extra yogurt has no effect on the microbial environment of digestive tract, but is harmful to memory.

People who drink full-fat yogurt every day can reduce the risk of depression in the next 10 years13, while low-fat yogurt has no such effect. Researchers believe that when negative emotions strike, the brain sends signals to the intestines, which is why gastrointestinal discomfort occurs when negative emotions strike. Moreover, intestinal health will also affect mood, and drinking yogurt often will reduce the activity of brain regions related to mood and pain.

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