Because histamine is an allergic poison, it can also be said to be allergic food poisoning. Don't think it doesn't matter if you only eat a little dead crab meat. People who are allergic to histamine can cause a reaction even if they take a bite. For example, after eating dead hairy crabs/kloc-for 0/0 minutes to 3 hours, symptoms will appear, such as redness of cheeks, flushing of chest and whole body skin and conjunctival congestion, as well as headache, dizziness, chest tightness, general fatigue and irritability.
Another important cause of poisoning is bacterial infection. Generally speaking, the living environment of hairy crabs is not as good as that of artificial and marine crabs. Once they die, bacteria in and out of the body will multiply, decompose crab meat and produce toxins. Relatively speaking, the risk of bacterial infection is higher, and people are more prone to bacterial infection after eating.
It should be noted that the dietary guidelines for Chinese residents suggest that each person should not eat more than one crab every day. People with allergies, patients with hyperuricemia or gout, pregnant women, the elderly, children and the infirm, it is best to eat less or not to eat crabs.
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Precautions for eating crabs:
1, don't eat raw crabs
Living crabs contain paragonimiasis parasites, and the infection rate of this parasite is extremely high. If you eat crabs raw, it is likely that the paragonimiasis parasitic in crabs will parasitize in the lungs of human beings, which will destroy or stimulate the lung tissue structure and cause cough, pneumonia, enteronitis, hemoptysis and other diseases.
2. Don't eat the four parts of crabs.
The four parts that crabs can't eat are crab gill, crab stomach, crab heart and crab intestine, which are inedible. The crab gills are in the belly of the crab, two rows of soft things, which are eyebrow-shaped; The crab's stomach is inside the crab cover, which is a small bone bag with a triangular shape; The crab heart is in the crab body, which is a flake and hexagonal; The crab intestine is a black line connected to the crab navel. Never eat these four parts.
People's Network-Why can't dead crabs be eaten
People's Network-Can crabs still be eaten after death? You should know the precautions for eating crabs