Crabs are frozen to death and cannot be eaten.

Can't eat. When crabs are dying or dying, they will produce a chemical called histidine, which will decompose to produce toxic substance histamine. The longer they die, the more poisons will be accumulated. Even cooked crabs will not be destroyed, which is extremely harmful to human body.

What are the hazards of eating dead crabs?

People who eat crabs have symptoms of nausea, vomiting, diarrhea and abdominal pain. Seriously, besides nausea and vomiting, there will be symptoms of dehydration, skin flushing, dizziness, palpitation, chest tightness, blood pressure drop and so on.

Why is eating dead crabs poisoned?

Crabs mainly eat rotten dead fish and shrimp in water for a living. In addition, crabs breathe through gills, and sludge, weeds and other substances often stay in gill cracks. Therefore, there are many bacteria in the body. When crabs are alive, bacteria can be excreted with the metabolism in the body. Once they die, bacteria in the body will multiply and decompose crab meat, and some bacteria will produce toxins. Such crabs are prone to poisoning after eating.

How to prevent crab poisoning

In order to prevent poisoning when eating crabs, we should pay attention to three points before eating:

Wash crabs, especially crab shells, which often contain sediment. Wash them with cold water, and peel off the inedible parts as much as possible. This part of bacteria is the easiest to breed.

When you cook a crab, you must cook it thoroughly. When the whole crab is heated, the heat is not easy to penetrate. In addition, if the crab shell is very thick and the crab is not cooked thoroughly, the Escherichia coli hiding in the gills and shell corners should not be killed. These bacteria are easy to cause diarrhea and abdominal pain.

Don't eat too much crabs at a time, because crabs are cold foods, and excessive consumption is prone to diarrhea, especially for people who already have stomach problems.