First of all, let's say that any food has some side effects, and whether or not it's harmful to your body depends on the dosage consumed. You eat one a day, my personal advice is, reduce the frequency of consumption.

To talk about the dangers of overdosing on leather eggs

Leather eggs are loose eggs, made from fresh eggs, fresh duck eggs, the traditional leather egg production process requires raw materials mainly mixed soda ash, lime, salt, tea, etc., in order to be the protein in the fresh eggs quickly cohesion and shelling, but also need to add some xanthan powder (containing lead oxide). It has the effect of making the egg produce a beautiful pattern, but with the yellow Dan powder, the loose eggs will be contaminated with lead.

Because of the toxic effects of lead on the human body, endangering the kidneys, nervous system, hematopoietic system, affecting children's intelligence, and gradually developed a lead-free process with EDTA (ethylenediamine tetraacetic acid) instead of lead oxide, so "lead-free" is not completely free of lead, only the lead content is lower than the national regulations of 0.5 mg/kg, trace amounts of lead in the eggs, and the lead content is lower than the national regulations of 0.5 mg/kg. Therefore, "lead-free" loose eggs are not completely free of lead, only that the lead content is lower than the national regulation of 0.5mg/kg. Trace amount of lead has little effect on adults, but children are very sensitive to lead, and the intestinal absorption rate is up to 50%. After absorbed by children, the trace lead in "lead-free" eggs will be stored in liver, lungs, kidneys, brain and other tissues and red blood cells, and it will also cause the loss of calcium in bones and teeth. Regular consumption of "lead-free eggs" will cause children to have poor bone and tooth development, loss of appetite, gastroenteritis, etc., but also affect the intellectual development.

In addition, lead-free eggs have a higher content of copper and aluminum. But on balance, lead-free eggs are safer than leaded eggs, and relatively less harmful to the human body.

One more thing to be reminded is that, according to the relevant food experts test and analysis, only 400-500 bacteria on the shell of a clean turquoise egg, while dirty turquoise eggs have up to 140 million-400 million bacteria on the shell, these bacteria through the shell gaps into the egg, will cause poisoning of accidental ingestion. Therefore, in the purchase of eggs, should pay attention to, if the egg white is dark brown transparent body, and has a certain degree of toughness, it is clean eggs, while the contaminated eggs are light green, poor toughness, easy to loose.

Above all, I advise people who like to eat eggs to try to eat less eggs, it is best to be able to control the amount and number of times to eat eggs, although it is very tasty, but after all, the body is important.