During the "May 1st" holiday, tourists visiting the beach will inevitably eat seafood.

But I wonder if you have noticed that several places have issued early warnings recently to remind everyone that the two types of aquatic products must not be eaten in the near future, otherwise there will be a risk of food poisoning.

Which two kinds of seafood are they?

　　The Bureau of Oceans and Fisheries of Qinhuangdao City, Hebei Province recently issued a warning notice on the consumption of Haihong.

According to the notice, according to recent test results, the paralytic shellfish toxin contained in Haihong's body has exceeded the safety limit by more than twice, and it is very easy to cause poisoning if eaten.

　　It is still the peak season for textured snail production. The Ocean and Fishery Bureau of Quanzhou City, Fujian Province also issued a reminder recently that April to September each year is the most toxic time for textured snails. Dizziness, vomiting, numbness of lips and fingers can occur after eating. For symptoms of poisoning, the incubation period is as short as 5 minutes and up to 4 hours.

Remind everyone not to eat textured snails when dining out to avoid accidents.  

　　Haihong is a common edible shellfish in northern areas. It is rich in nutrients, delicious in taste, and has strong reproductive capacity, and the price is not expensive.

So what kind of toxin does Haihong contain?

If swallowed, what harm will it cause to human body?

When can Haihong eat with confidence?

　　Experts said that shellfish toxins can generally be divided into paralytic shellfish toxins, diarrheal shellfish toxins, neurotic shellfish toxins and amnestic shellfish toxins.

At present, there are no specific treatments for poisoning caused by these four types of shellfish toxins.

Among them, paralytic shellfish toxin is considered to be the one with the highest frequency of accidents, the widest distribution, and the most harmful.

The main symptoms of the poison include dizziness, vomiting, diarrhea, tingling and numbness in the lips, face, and neck, and even suffocation in severe cases.

　　Could it be that the delicious and cheap Haihong can't be eaten in the future?

of course not.

The warning notice issued by Qinhuangdao City makes it very clear. In recent years, monitoring has shown that the occurrence and development of paralytic shellfish toxins contained in Haihong has a certain pattern. As the temperature rises in late March every year, the seawater is toxic. The algae grows luxuriantly, and the toxin content in the sea rainbow that feeds on it naturally increases. The "May 1st" period is the peak of toxin accumulation, and generally in June, the toxin content in the sea rainbow will drop to the limit value. the following.

In other words, during the year, except from March to June, you can rest assured to eat Haihong at other times. 

　　As the weather gets warmer, it's time for all kinds of seafood to come on the market in large quantities.

Although seafood is delicious, can everyone enjoy it?

　　The following six categories of people are not suitable for eating seafood:

  • 　　People with allergies.

    If eczema dermatitis is in the acute stage or people who have been allergic to fish and shrimp, eating seafood may aggravate the symptoms of allergy;

  • 　　Gout patients;

  • 　　People with higher blood lipids.

    The snails, shellfish, and crabs in seafood, especially crab yellow, are high in cholesterol;

  • 　　Severe liver and kidney damage.

    Seafood contains a lot of protein, too much protein intake will increase the burden on liver and kidney;

  • 　　People with coagulation dysfunction;

  • 　　Pregnant women or women who are preparing for pregnancy or breastfeeding.

    The mercury content of marine fish is higher than that of freshwater fish. Mercury can directly combine with the red blood cells in the blood when entering the body, which will hinder the function of reproductive cells.

    Studies have found that pregnant women and breastfeeding women who consume seafood four times a week, each time more than 100 grams, may affect the development of the nervous system of the fetus and newborn.

　　Source: CCTV Finance (ID: cctvyscj)