The incidence rate of social anxiety disorder was investigated by college students who studied pickled cabbage, yogurt and other foods. It was found that eating fermented food could significantly reduce the incidence of social anxiety symptoms. The possible reason is that fermented foods contain probiotics that can promote digestion and absorption and improve intestinal environment, and promote emotional health through improving digestion function.
The onset of social anxiety is also related to personality, gender, and age questions the above research conclusions most.