3 types of fish contain carcinogens, metal contaminated absolutely do not buy to eat

Fish is a healthy, nutritious and less harmful food. However, if the fish lives in polluted water, it is very easy to accumulate toxins.

Pork is always an integral part of our daily diet. It is not only delicious but also has abundant nutritional value such as protein and amino acids. However, pork also has the most potential health risks, as it is high in fat. If you eat a lot of pork it can easily cause problems like obesity, hyperlipidemia and blockage of blood vessels.

That is why many people gradually restrict eating pork and switch to other meats such as fish. Fish is rated healthier than pork. First of all, it doesn't contain any fat in it, so it doesn't cause problems like obesity. It also has a large amount of unsaturated fatty acids in it. In addition, eating fish protects the health of the heart and blood vessels, but not all fish are completely safe. Because the fish itself has relatively strong vitality, it is also susceptible to contamination by various harmful substances in the aquatic environment. Here are 3 types of fish susceptible to carcinogens and metals that people should not eat.

1. Unusually heavy fish

Fish is rated healthier than pork.

The types of fish we usually eat mainly include carp, grass carp, . They are basically freshwater fish, so the weight is usually about 2kg.

However, if you buy these types of fish and feel a lot heavier than 2kg, that could be a problem. First of all, these fish usually have a long shelf life, so the taste of the meat will no longer be delicious. Moreover, the fact that it lives too long in the water environment is also susceptible to toxins and pollutants accumulated in the body. In particular, many fish may have lived in poor quality environments, resulting in large growth. If ingested, these fish could be harmful to the body.

2. Deep sea fish

Today, many people choose food not only to fill their stomachs. In addition to taste and nutrition, people are also more interested in new foods. Therefore, shallow-water fish can no longer meet the demand, so many people began to turn to eating large types of deep-sea fish such as salmon, tuna, etc.

These fish basically have very strong vitality, so they can accumulate large amounts of heavy metals in the body, especially mercury elements that can exceed the standard. Accidental ingestion of fish contaminated with mercury will not only cause heavy metal poisoning but may also be life-threatening.

3. Fish smell strange

Do not touch fish with strange odors.(Illustration).

Do not touch fish with strange odors. The fish can be said to be a very tenacious animal. It can live in heavily contaminated silt and water for a long time, so sometimes we may encounter fish that have a special smell. Normally, fish should only have a fishy smell, but if you find that the kerosene smell on the fish has covered the fishy smell, do not buy, because this fish has the ability to live in heavily polluted water quality. If you continue to eat will probably cause poisoning.

In addition, the fish after leaving the water environment will also be easily damaged, so some dishonest sellers will put formaldehyde in the water before selling, so that the fish can maintain freshness longer. In that case, the fish will smell quite pungent, so you should be careful when buying.

Formaldehyde has been shown to cause cancer if used in the body. Therefore, formaldehyde has long been banned in food processing. If you use foods containing formaldehyde at some time there is a great risk of being poisoned, especially cancer can be caused by formaldehyde.

• 6 types of fish with money, do not rush to eat right away if disease comes, including cancer
• Things to know when eating fish