Crab is very rich in protein and other micronutrients, which is a good tonic for the body. The crab meat is cold and salty in nature, and has the effect of clearing the meridians, clearing heat, treating bruises and injuries, soothing the tendons and benefiting the qi, and strengthening the stomach and eliminating food. There are many benefits to eating crab, but you need to understand that there are also contraindications to eating crab. You should be careful when eating crab 1, not to eat dead crab The parasitic bacteria in the dead crab will multiply and spread into the crab meat, making the protein decomposition to produce histamine. The longer the crab is dead, the more histamine is accumulated in the body and the more toxic it is. Even if the dead crab is cooked thoroughly, the toxins are still not easily destroyed and can cause nausea and vomiting, flushed cheeks and rapid heartbeat after consumption. 2. Do not eat raw crabs. Crabs feed on animal carcasses or humus, so their body surface, gills and gastrointestinal tract are covered with all kinds of bacteria and sludge. Especially, the lungworm larvae in its body are highly infected and resistant, which cannot be killed by soaking in yellow wine or white wine alone. If you’re not sure what to do, you’ll be able to get a good idea of what to expect. 3, do not eat overnight crab crab is a food containing more histamine acid, overnight leftover crab species histidine in the role of certain vitamins, will break down into histamine, back to the pot heating with can kill the pathogenic microorganisms, but can not destroy the toxin, which leads to histidine poisoning. Therefore, you must keep in mind that it is best to eat crabs now, steamed, for a maximum of 4 hours. 4, eat only the crab meat, crab paste, crab yellow As crabs in rivers and lakes, feeding on phytoplankton and like to crawl in the sand and gravel, so the gills and intestines of crabs contain a lot of sediment spoils, eat must be removed, but only take its crab meat, crab paste, crab yellow food. 5, eating crab condiments vinegar and ginger essential Because of the cold nature of crab, so fried crab is to add ginger, onion, garlic seasoning to drive the cold to fishy, and eat steamed crab to add the right amount of chopped ginger in the vinegar, dipped and eaten. One can offset the coldness of the crab and play an antiseptic role, the second crab meat dipped in vinegar can be deodorized and increase the freshness of the crab. 6, do not eat too much because of the cold nature of the crab, crab yellow cholesterol is very high, the average person should not exceed 1 pound per time, and should not eat crab more than 3 times in a week. The people who have a cold spleen and stomach should pay attention to this, so as not to cause abdominal pain and diarrhea. 7, should not be eaten at the same time food crab also has a conflict with the food, so eat crab can not eat with celery, persimmon, pear, orange, pomegranate, tomatoes, melon, peanuts, sweet potatoes, honey, rabbit and other food, otherwise it will bring discomfort to the body. Who is not suitable to eat crab 1, the spleen and stomach cold people should not eat or eat less crab crab cold nature, easy to eat after causing abdominal pain, diarrhea or indigestion. In addition, patients with chronic gastritis, gastric and duodenal ulcers should not eat crab, as it is easy to relapse or aggravate the old disease after eating. The actual fact is that you should not eat crab if you have a bad liver, whether it is acute or chronic, in order to reduce the burden on the liver in digestion and metabolism, to give the liver more opportunity and time to recuperate, and to prevent the occurrence of hepatic encephalopathy, you should eat less or not eat crab that is rich in protein and amino acid components. 3, people with allergies should avoid eating crab crab cold and wet poison, is “hair”, allergic people eat crab, specific crab protein through the permeability of the intestinal wall into the body and allergic reactions, a large number of histamine, etc., causing smooth muscle spasm, nausea, vomiting, abdominal pain, diarrhea; some can also cause Some can also cause hives or asthma. 2, cardiovascular patients should not eat crab crab contains high cholesterol, coronary heart disease, hypertension, arteriosclerosis, hyperlipidemia patients, the consumption of food containing too much cholesterol will lead to increased cholesterol, aggravating the development of cardiovascular disease, so you should eat less or do not eat crab, especially the yellow crab. 3, the elderly should not eat more crab elderly people’s digestive function is weakened, crab cold and hairy, its high protein food is not easy to digest, so should be careful to eat. You can dip the crab in ginger vinegar sauce to remove its coldness. 4, pregnant women should avoid eating crab crab has the effect of activating blood stasis, may lead to miscarriage. Chinese medicine believes that crab claws can promote the birth of the next child, so pregnant women or those with habitual abortion should eat with caution. The crab is delicious and has a high nutritional value, but don’t forget to eat the crab taboos while tasting the deliciousness.