1, the first is lead poisoning, because there are many prefaces to pickled eggs, saying that eating them often will lead to lead poisoning, resulting in brain nerve disorder, mental decline and dyskinesia.

2, the nutrients contained in the preserved eggs, the structure of many substances has changed during the pickling process, so after being ingested by the human body, it will affect the appetite, and there will be abdominal pain and diarrhea.

3. In addition, trace elements and some minerals contained in preserved eggs will affect the absorption of nutrients needed by the human body, leading to the emergence of iron deficiency and zinc deficiency.