1, do not eat dead crabs. After the death of Eriocheir sinensis, the bacteria in the crab will multiply rapidly and spread to the crab meat, causing vomiting, abdominal pain and diarrhea.

2, avoid eating raw crabs. The infection rate of metacercaria of Paragonimus larvae in live crabs is very high, reaching 7 1%. Paragonimus parasitizes in human lungs, which stimulates or destroys lung tissue and can cause fever, cough and hemoptysis. If it invades the brain, it can cause paralysis.

3. Avoid eating crabs overnight. Crab is a food containing more histamine acid. Histamine acid in the leftover crab overnight will be decomposed into histamine under the action of some microorganisms. Although heating in the pot can kill pathogenic microorganisms, it can not destroy toxins, resulting in histamine poisoning. Therefore, it is best to eat crabs steamed now, generally not more than 4 hours.

4. Don't chew crabs indiscriminately. When eating crabs, you should pay attention to four things to remove after opening the lid: remove the crab stomach, that is, the triangular bone packet in the crab lid, eat the crab lid first, scoop out the middle crab stomach with a small spoon, and gently suck the crab yellow wrapped outside. Be careful, don't suck through the stomach of the crab with a triangular cone in the middle, and discard it if there is dirty sand in it; After eating the crab cover, it's the crab's turn. First, cut off the extra crab feet and mouth with scissors. Pick out a hexagonal piece in the middle of the crab with a spoon handle, which is the crab heart part that should be discarded. There is also a crab intestine, that is, a black line from the crab stomach to the crab navel; Crab gills, that is, two rows of soft things like eyebrows growing on crab abdomen, should be removed.

5, avoid eating too much. Due to the cold nature of crabs, the cholesterol in crab roe is very high, so the average person should not exceed 1 kg at a time, and should not eat crabs more than three times a week.

Second, people who avoid eating

1, pregnant women: crabs have the effect of promoting blood circulation and removing blood stasis, which may lead to miscarriage. Chinese medicine believes that crab claws can give birth to the next child, so pregnant women or those who have habitual abortion should eat carefully.

Patients with liver diseases: People with poor liver, whether acute or chronic, should eat less or no food for crabs rich in protein and amino acids in order to reduce the burden of digestion and metabolism, give the liver more opportunities and time to recharge and prevent the occurrence of hepatic encephalopathy.

3 Renal Insufficiency: No matter what causes renal insufficiency, when protein and amino acids are ingested, the renal load can be aggravated and the process of renal failure can be accelerated. Therefore, for patients with renal insufficiency, eating crabs can only taste.

4 Patients with hypertension, hyperlipidemia, diabetes and digestive tract diseases: The cholesterol content of crab roe or crab paste is very high, and people with hypertension, heart disease and arteriosclerosis should not eat more. Patients with diabetes and kidney disease often have high blood pressure, so it is not advisable to eat more crabs. Patients with chronic digestive tract diseases such as cholecystitis, pancreatitis, gallbladder polyps, gallstones, gastritis and duodenal ulcer should also eat less or not, so as not to aggravate the condition.

5 Allergic physique: Crab is cold and wet, which belongs to "hair". Patients with skin diseases should not eat patients who have allergic history to crabs in the past, or patients who have allergic diseases such as urticaria, allergic asthma and allergic dermatitis in the past, or they should not eat them. Once allergies occur, it is not worth the loss. After entering autumn, the proportion of children suffering from allergic diseases began to rise, so children had better not eat more at this time.

6 Diarrhea, stomachache, cold and fever: Because crabs are difficult to digest, people with diarrhea, stomachache, cold and fever should not eat, so as not to aggravate the condition. People with deficiency and cold constitution, such as those who often have cold hands and feet, are prone to dizziness and fatigue, had better not eat them, so as not to cause physical discomfort.

7 Arthritis and gout patients: Especially gout patients should avoid eating crabs, not to drink beer at the same time, otherwise it will aggravate the condition, or induce gallstones and kidney calculi.

8 old people: the digestive function of the old people is weakened, and the crab is cold and hairy. Its high-protein food is not easy to digest, so it should be eaten carefully.

What can't you eat when you eat crabs?

1, can't eat with tea: don't drink tea water when eating crabs and within 1 hour after eating crabs. First, tea will dilute gastric juice, which is not conducive to the digestion of crabs; second, tannic acid in tea will solidify protein in crab meat. Both reasons are not conducive to the digestion and absorption of crabs, and may also cause abdominal pain and diarrhea.

2, can not eat with persimmons: when the crab is fat in autumn, it is when the persimmon is ripe, but the two can not be mixed. Because tannic acid and other ingredients in persimmon will coagulate crab meat protein, the coagulated substance will ferment and rot in the intestine for a long time, causing vomiting, abdominal pain, diarrhea and other reactions. Crab and persimmon are both cold, and eating cold together will damage the spleen and stomach. Crabs should not be eaten like grapes, pomegranates, hawthorn, pears and apples.

3, can not eat with peanuts: peanut fat content is as high as 45%, greasy things eat with crabs, easy to cause diarrhea.

4, can not eat with loach: loach is warm, while crab is cold, and eating together is not good for health.

5, can not eat with cantaloupe: cantaloupe is melon, sweet and cold and smooth, can remove heat and relax bowels. Eating with crabs is harmful to the stomach and easy to cause diarrhea.

6, can not eat with pears: pears are sweet and cold, crabs are also cold, and they eat together, which is easy to hurt people's stomach.

7, can not eat with cold drinks: ice water, ice cream and other cold things, so that the gastrointestinal temperature is reduced. Eating with crabs is easy to cause diarrhea.