Recently, rumors about “crab yolk cannot be eaten and will cause cancer” have been reported in the media: the New York City Department of Health in the United States called on Chinese to stop eating crab, saying that the concentration of chemicals and heavy metals at the crab yolk and crab paste can seriously affect human health and may cause cancer …… In fact, the The New York City Department of Health’s consumer advice: not for crabs or crab yolk, but for not eating them or eating them on a limited basis due to serious local industrial pollution in New York, may not be applicable elsewhere. The internet is guilty of generalizing, “Whether crabs are overloaded with heavy metals and harmful to humans should be considered in at least the following ways.” First, many people would worry about the lack of hygiene of the crab growing environment, such as the presence of heavy metal contamination, toxic and harmful residue contamination, etc. In fact, the vast majority of crabs we can eat today are artificially farmed and not caught in unknown ditches. There are strict water quality standards for artificially farmed crabs, and if the farming environment is contaminated with heavy metals, it will have an impact on the health of the crabs themselves, and the farmers will lose more than they gain if there is a large area of death. Therefore, you can be assured of the health and safety of crabs raised in a normal farming environment. Secondly, no clean farming environment can meet the hygiene standards of an uncontaminated natural environment, even if there are certain pollutants in the farming environment, there is no need to worry. Even if there are some pollutants in the farming environment, there is nothing to worry about because the parts where the pollutants are concentrated are not the crab yolk, but the inedible parts such as the gills, lungs and liver. So, you can rest assured about the hygiene of crab yolk. Finally, it is recommended that: for the nutritional composition of crab yolk, it is a nutritious food with low calories, and the cholesterol problem in crab yolk does not cause cardiovascular disease, so normal people can eat it without worry. However, we need to pay attention to the intake and control it to about 40-70g per day (about 1-2 pieces), after all, crab is a seasonal food and should not be eaten all year round.