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 incidence rate of pickled cabbage consumption and social anxiety disorder among the students in the country is the highest in the world.
 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