It should be noted that because fresh seafood often contains bacteria and toxins, it is easy to cause food poisoning when eaten raw, so not all seafood can be eaten raw and properly handled.
Are there parasites in raw seafood? Almost all raw seafood foods contain parasites and various pathogens, such as Clonorchis sinensis and Paragonimus. The larvae of these worms are often parasitic in fish, shrimp, crabs and so on. After people eat these polluted seafood, these larvae will pass through the gastrointestinal wall and enter the blood vessels or lymph, and flow with the blood to the whole body, mainly in the lungs or liver, and some will gather in the brain, causing corresponding diseases.
Aquatic products are easy to breed bacteria and produce toxic pathogens in the process of aquaculture, and if the aquaculture waters are polluted, aquatic products will undoubtedly be infected. If you eat this kind of food raw or half-eaten, bacteria are very likely to cause harm to the human body.
Harm of eating raw seafood There are many parasites and bacteria in seafood, so it is best not to eat raw seafood. In addition, studies have shown that raw seafood such as fish, shrimp, crab, shellfish and seaweed will contain Vibrio parahaemolyticus, and eating undercooked seafood may lead to food poisoning, diarrhea, abdominal pain and vomiting.
Latent parasite eggs and contaminated bacteria during processing generally need to be boiled in boiling water for 4-5 minutes to be completely killed. Drunk shrimps and crabs can't kill pathogenic microorganisms only by soaking in high-alcohol liquor.
Therefore, it is recommended not to eat seafood raw, but to cook it thoroughly; Dead shrimps, crabs and shellfish are most likely to breed a large number of parasites and bacteria, and it is best not to eat them.
Precautions for eating raw seafood Eating raw seafood is very popular in many places, such as oysters and other shellfish. Experts stressed that if you must eat seafood raw, you must pay attention to hygiene. Most seafood contains highly pathogenic bacteria. It is suggested that seafood should be frozen at 4℃ 1-2 hours before eating, and then soaked in light salt water to achieve the purpose of sterilization.
People who are forbidden to eat seafood (1) are allergic.
Seafood foods such as kelp, shrimp and fish are rich in histidine, which will cause a series of allergic reactions after entering the human body. Mildly manifested as skin wheal (urticaria), accompanied by severe itching or burning sensation; In severe cases, allergic asthma and allergic purpura will occur. Therefore, people with allergic symptoms should be careful to eat seafood.
② Infertile patients
Studies have shown that men who eat too much seafood will weaken their fertility. The mercury content in fish is higher than that in water. When mercury enters the human body, it will affect the function of germ cells. Therefore, although seafood is delicious, the majority of young men of childbearing age should also abstain from eating.
③ gout patients
Seafood food is rich in purine, which will cause metabolic disorder and lead to gout. Therefore, gout patients should be careful to eat seafood to avoid inducing or aggravating gout symptoms.
④ Patients with coagulation dysfunction
Seafood contains more unsaturated fatty acids, and prostacyclin produced by its metabolism can inhibit platelet aggregation and stop bleeding. Therefore, people with thrombocytopenic purpura, allergic purpura, hereditary fibrinogen deficiency and hemophilia should eat less marine fish with high fat content and should not take fish oil and other products.
Pregnant women should avoid eating seafood (1) What seafood is good for pregnant women?
Mothers can still eat seafood during pregnancy, such as shrimp and fish rich in protein and calcium. Most of these seafood contain high-quality gold elements, including protein, VA, VB, calcium, iodine and so on, which are beneficial to human body. Some scholars have pointed out that women often eat fish during pregnancy, and the children born are outstanding in action, language and sports.
(2) What seafood should pregnant women not eat?
Pregnant mothers should avoid eating turtles and crabs. In addition, the current marine environment is worrying, and the mercury content in seafood is increasing. If expectant mothers often eat seafood (refers to the number of times they eat a week); 4. Dosage per serving 100g) will pose a great threat to the development of children's nervous system. Therefore, it is suggested that expectant mothers who like seafood should learn to avoid eating, and eat it no more than twice a week, and the consumption should be less than100g each time, especially for high-mercury fish such as tuna and swordfish.
What can't seafood be eaten with? Seafood+persimmon = stomachache? Part of the answer is correct.
Protein rich in seafood will combine with tannic acid in fruits and tea, which may lead to degeneration and food poisoning in protein. Moreover, if tannin protein sticks to pectin and cellulose, stones may be formed; Both of the above conditions can cause stomach pain.
However, eating raw persimmons, eating a lot of persimmons, eating persimmons on an empty stomach or eating them with a lot of high-protein foods such as beef, chicken and eggs may all cause stomach pain. So as long as the seafood is cooked, but the persimmon is not eaten, it will not have much impact on the body.
Seafood+beer = gout? The answer is yes.
Seafood and beer are called "gout package" because some fish (such as sardines, anchovies, salmon, etc. ), shellfish and shrimp and crab have more purines. If you drink a lot of alcohol, it will accelerate the decomposition of purine and produce uric acid, while ethanol in wine is not conducive to uric acid excretion and may induce gout.
It can be said that alcohol and seafood are both high-risk factors of gout, and together they are "worse". Not only beer, but also all kinds of alcoholic beverages, if drunk too much, may also become a risk factor for gout high-risk groups.
Seafood+vitamin C= arsenic? Invalid answer.
The remark that spread very hotly on the Internet is: "The pentavalent arsenic compounds enriched in seafood may react with vitamin C to produce highly toxic arsenic."
In fact, seafood sold in formal channels will be tested by relevant departments, and the national standard stipulates that the arsenic content per kilogram should not exceed 0.5 mg. According to this calculation, to achieve the poisoning effect, you need to eat 150 kg of seafood and more than 10 kg of fruit, which far exceeds the stomach's tolerance.
Some researchers found in simulated gastric juice that vitamin C can not reduce pentavalent arsenic to trivalent arsenic alone, but needs to work with reduced glutathione.
Eating seafood allergy eating seafood allergy symptoms A few people eat fresh fish or seafood because they are born with a lack of enzymes that break down histamine, which can cause allergies, some of which are characterized by papules on certain parts of the body (face, legs, arms and even the whole body) accompanied by itching symptoms.
The reason of eating seafood allergy is that seafood is rich in heterogeneous protein, which directly or indirectly activates immune cells, causing the release of chemical mediators, and then produces a series of complex biochemical reactions. When antibodies and antigens work together, people will show allergic symptoms.
What if you are allergic to seafood? Generally, I can take Kairuitan, chlorpheniramine and other antiallergic drugs for treatment, and use calamine lotion or cyproheptadine ointment for external treatment. I can also go to the dermatologist for examination and take medicine under the guidance of a doctor. Pay attention to local hygiene, don't eat spicy food, don't eat seafood food and don't drink alcohol.
Taking antiallergic drugs and eating seafood will aggravate allergic symptoms. At present, anti-allergic drugs are mainly antihistamines, which are divided into three generations: the first generation is represented by diphenhydramine, chlorpheniramine and promethazine; The second generation, including loratadine and cetirizine, is the main force at present; The third generation includes levocetirizine and desloratadine. They can all be used against histamine, the "culprit" of allergy.
As a high-protein food, seafood is rich in histidine, which is decarboxylated by histidine decarboxylase in human body to form a large amount of histamine.
If patients eat seafood while taking anti-allergic drugs, it will lead to more and more histamine in the body that needs treatment, thus aggravating allergic symptoms. Therefore, seafood should be avoided during taking anti-allergic drugs.
Eating seafood poisoning The symptoms of eating seafood poisoning occur very quickly, often at 0.5~ 1 hour after eating, sometimes as long as 5 minutes, and the long time is only 4 hours. Symptoms are mild at onset, recovery is rapid, and occasionally death occurs. Often manifested as blushing, dizziness, headache, heartbeat, palpitation, chest tightness, shortness of breath, swelling of face and lips, numbness of tongue and limbs, nausea, vomiting, itchy skin and so on.
Causes of seafood poisoning, such as eating stale or rotten green-skinned red-fleshed fish, can cause poisoning; Pickled salted fish, if the raw materials are not fresh or pickled, contains more histamine, which will also cause poisoning after eating.
All kinds of seafood, such as shrimp, crab, clam and oyster, contain the chemical element arsenic. Generally, the content is very small, but the increasingly serious environmental pollution may make the arsenic content in these animals reach a high level. The valence state of arsenic contained in shrimp is pentavalent. Under normal circumstances, pentavalent arsenic is harmless to human body. Theoretically, high doses of vitamin C (more than 500 mg of vitamin C at a time) and pentavalent arsenic will be converted into toxic trivalent arsenic (arsenic) through complex chemical reactions, which will lead to human poisoning when trivalent arsenic reaches a certain dose.
Take 50 medium-sized apples or 30 pears or 10 oranges or eat more than 3 kilograms of green leafy vegetables at a time, and then take a large dose of vitamin C. If you go through the heating cooking process, the vitamin C in food will be greatly reduced. Therefore, it is not dangerous to eat fruits or vegetables while eating seafood, as long as it does not exceed the above amount. Metal elements are easily deposited on the heads of seafood, so try not to eat shrimp heads and fish heads.
How to eat seafood poisoning? If there are signs of food poisoning, I must go to surgery for gastric lavage, otherwise the toxin will be absorbed by the gastrointestinal tract, which will cause visceral failure and even other serious symptoms. It is recommended to send a doctor in time.
(1) Eating seafood food poisoning requires spitting out shellfish food.
People who are poisoned by toxic shellfish should immediately induce vomiting, or thoroughly wash their stomachs with 5% sodium bicarbonate solution or clear water to remove the toxic shellfish remaining in their stomachs.
(2) Eating seafood food poisoning requires infusion to urinate.
Intravenous infusion to promote urination and accelerate the excretion of toxins. Let seafood be excreted quickly.
(3) Food poisoning caused by seafood injection.
Atropine 1 ml, intramuscular injection, intramuscular injection of vitamin B 1B6, etc. It has a certain effect on relieving bradycardia such as toxic nerve paralysis or limb numbness.
(4) supplement liquid when eating seafood food poisoning.
Replenish liquids, especially cold boiled water or other transparent liquids, and replenish electrolytes lost due to vomiting and diarrhea, such as potassium, sodium and glucose. Don't stop diarrhea, let the toxins in the body be discharged before consulting a doctor or sending them to hospital for treatment.
(5) Eat seafood food poisoning and drink plenty of water.
Vomiting and diarrhea lead to a large loss of body fluids, which will cause various complications and directly threaten the life of patients. At this time, you should drink more clean water, which can promote the elimination of pathogenic bacteria and their enterotoxins and reduce poisoning symptoms.
How to prevent seafood poisoning (1) Avoid seafood poisoning without eating internal organs.
Heavy metals and other pollutants are easy to be enriched in shellfish viscera, while the content of heavy metals in muscle is the lowest. So you can only eat the muscle part of shellfish. "Look at the color" is a relatively simple judgment method. After the shell is opened, the slightly blackened meat pieces are mostly visceral masses. Some shellfish have a black sand line inside and cannot be eaten.
② Choose seafood with smooth shell.
Compared with rough oysters and scallops, clams and mussels have clean and smooth appearance, less dirt and less pollution.
(3) Wash before eating.
Before eating, it must be washed to remove scales, gills and internal organs. Scaleless fish can scrape off the greasy parts on the epidermis with a knife, because these parts are often the gathering places of pollutants in marine fish.
(4) Eliminate toxins to avoid seafood poisoning.
Fresh jellyfish contain more water, thicker skin and toxins. It needs to be marinated with salt and alum for three times, so that fresh jellyfish can be dehydrated for three times and toxins can be discharged with water. It can be eaten after the above treatment. Or clean, soak in vinegar 15 minutes, and then blanch in hot water (blanch in boiling water at 100℃ for several minutes).
What if the fishbone gets stuck in the throat? If it is a small burr, you can keep calm. Don't swallow it hard. You can leave the hospital in about three days. If the fishbone is too big to be taken out by itself, you should go to the hospital as soon as possible to avoid accidents.
If the fishbone is big and hard, it stings badly, or you can't find the fishbone with the help of relatives and friends, or you feel severe pain in your neck and chest, you should see a doctor immediately.
Because the fishbone is not stuck in the oropharynx, but in the laryngopharynx, this part is generally difficult to see and needs to be treated in a hospital.
If you accidentally swallow the feeding passage, there are four strictures in the esophagus, among which the fishbone is most likely to get stuck in the first stricture, which is the entrance of the esophagus. At this time, if you still swallow forcibly, you may push the foreign body to the level of the second stenosis, that is, the aortic arch, or even directly penetrate the aorta, or penetrate the esophagus to cause esophageal perforation and mediastinal infection, which may be life-threatening in extreme cases.
The otolaryngology and gastroenterology departments of hospitals often receive patients who eat fish sticks, and doctors will use laryngoscope, gastroscope, esophagoscope and even thoracotomy to remove fish sticks. So don't underestimate the matter of being caught by fishbone, but it will be very troublesome to deal with it carelessly.
However, compared with the fishbone stuck in my throat, it is easier to meet at ordinary times: after eating fish, I feel something in my throat is very uncomfortable.
This situation is not necessarily that the fishbone is stuck. If there is only a foreign body sensation without obvious tingling and it does not affect swallowing, then the fishbone is generally small, or the fishbone is scratched but has fallen off.
In this case, you can observe first, and if you feel pain or foreign body symptoms get worse, then go to the doctor.
In short, whenever you encounter a fishbone stuck in your throat, don't be careless and don't try those strange treatments.
Cough gently, observation and going to the hospital are the best means.
Misunderstanding of fishbone stuck in throat (1) Don't wolf down your food.
It is said that swallowing rice, cakes and steamed bread can send fishbones into the stomach. However, after the meal, the original throat stabbed the throat and took another bite of steamed bread to the esophagus. However, no matter how you swallow it, the fishbone will only stick deeper in the meat.
(2) Don't gulp water.
It is rumored that drinking water can also send fishbones into the stomach. However, gulping water is like swallowing rice, and violent swallowing may only push the original shallow thorn deeper. You can't expect the fishbone to come out by itself just by drinking water.
(3) Don't gulp vinegar.
It is rumored that the composition of fish bones is calcium, and vinegar can react with calcium, and fish bones will soften when they meet vinegar. So when eating vinegar fish, vinegar braised fish, sweet and sour carp and vinegar fish, are all fish cartilage soft?
(4) Do not eat vitamin C.
It is rumored that taking a few tablets of vitamin C can also soften the fishbone. People who probably believe in this method think that vitamin C tablets taste very sour and have the same effect as drinking vinegar.
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