Compound leavening agent will interfere with people's thinking, consciousness and memory function, and cause nervous system diseases, which are manifested as memory loss, visual and motor coordination disorder, brain injury and mental decline, and even dementia may occur in severe cases.

The leavening agent refers to a kind of substance added to wheat flour, the main raw material of baked food, which is decomposed by heat during processing, producing gas, making dough leavened and forming dense porous structure, thus making the product fluffy, soft or crisp.