Preserved eggs are also called preserved eggs, and preserved eggs contain lead, which many people know, so some people think that buying lead-free preserved eggs can be safely eaten. In fact, lead-free preserved eggs also contain lead, and adults can eat some, but children's bodies are "childish yin and yang" and their metabolism is extremely strong. After being absorbed by children, trace lead in "lead-free" eggs will remain in tissues such as liver, lung, kidney, brain and red blood cells, and will also cause calcium loss in bones and teeth. Regular consumption of "lead-free preserved eggs" will cause bone and tooth dysplasia, loss of appetite, gastroenteritis, etc. in children, and will also affect intellectual development. Lead-free preserved eggs are delicious and nutritious, but children are in the stage of vigorous physical development, and their reaction to the harm of lead is obvious, so it is better to eat less.

Moreover, according to the inspection and analysis of relevant food experts, there are only 400-500 bacteria on the clean preserved egg shell, while there are as many as1.400-400 million bacteria on the dirty preserved egg shell. If these bacteria enter the egg in large quantities through the pores of the egg shell, eating such preserved eggs will be poisoned. When purchasing preserved eggs, it should be noted that the protein of preserved eggs is dark brown transparent body after peeling, which has certain toughness; The contaminated preserved eggs are light green, with poor toughness and easy loosening. Such preserved eggs must not be eaten.

In a word, preserved eggs should not be eaten more.