Alum is a traditional food additive, but alum contains aluminum ions, and after being eaten, alum cannot be excreted from the body. It will be deposited in the human body forever, so it has chronic toxic and side effects. Its main toxic and side effects are that alum can kill brain cells, causing symptoms such as brain atrophy and dementia to occur in advance, affecting people's intelligence and having little impact on life. ?

At the same time, if people consume excessive amounts of aluminum in daily life, it will affect the absorption of iron, calcium, etc., leading to osteoporosis, anemia, and affecting the development of nerve cells. Alum is a traditional water purifier that has been widely used by people.

However, in recent years, alum has rarely been used as a purifier, mainly because the aluminum contained in alum is harmful to the human body. Long-term drinking of alum-purified water may cause Alzheimer's disease. Alum is used as an adsorbent when making hair masks. It should not be overdosed. Excessive use for a long time can lead to chronic poisoning. ?

In view of the various hazards of alum, it has been banned in our country. In puffed food noodles, steamed buns, fried dough sticks, etc., aluminum-containing food additives cannot be added during the food processing process, and long-term consumption is prohibited. Alum is very harmful to the human body, so we should pay special attention to it. From July 1, 2004, it is not allowed to add aluminum leavening agents, potassium aluminum sulfate, and ammonium aluminum sulfate to flour products such as steamed buns and steamed buns. Of course, it is not recommended to add any food additives to puffed foods.