Doctor: These 5 kinds of fish eat as little as possible, or contain formaldehyde and heavy metals, it is recommended to know

Fish is recognized as the best meat, and is a source of high-quality protein supplement that balances nutritional value and taste, and is favored by many people.

With the emergence of the seafood market, more and more kinds of fish appear in front of people, for people to choose more and more kinds of fish, yellow croaker, small whitebait, pomfret, eel, hairtail, grass carp, different fish will bring different taste and taste experience.

01

Nutritional value of fish:

The nutritional value of fish is very high, it is low calorie, low fat and high protein food. It is rich in essential vitamin A, vitamin E, calcium, magnesium, phosphorus, manganese, selenium, zinc, iron, potassium and other trace elements.

Supplement protein: Because fish is rich in animal protein, the meat is tender and easy to absorb. By eating fish you can supplement your body with high quality protein.

Supplementation of unsaturated fatty acids: Appropriate consumption of fish can effectively supplement unsaturated fatty acids, such as DHA and EPA, which can regulate the metabolism of fat in the blood.

Supplement TRACE elements: such as zinc, selenium, iodine, etc., THESE trace elements constitute raw materials for many enzymes in the body, which can make the biochemical metabolism in the body more smooth.

Reduce the risk of cardiovascular disease: it is rich in omega-3 fatty acids in fish, the EPA is one of the major components of omega-3 fatty acids, which can help reduce blood viscosity, promote the blood circulation, reduce the degree of hardening of the arteries, to a certain extent, reduce the occurrence of cerebral thrombosis, myocardial infarction, coronary heart disease and other cardiovascular disease risk.

Help prevent Alzheimer's disease: DHA is mainly found in the brain, retina and nerves of the human body, and the content of DHA in the blood of Alzheimer's disease patients is 30% to 40% less than that of normal people on average. Therefore, appropriate intake of fish can supplement DHA, ensure sufficient nutrients in the development of the nervous system, and help prevent Alzheimer's disease.

Eye protection: Fish is rich in long-chain polyunsaturated fatty acids such as DHA(docosahexaenoic acid) and EPA(eicosapentaenoic acid), which protect the retina.

02

Doctor: These 5 kinds of fish eat as little as possible, or contain formaldehyde and heavy metals, it is recommended to know

1. Deformed fish with a strange shape

In the seafood market, many vendors will try their best to sell deformed fish with strange shapes. Some people believe that although deformed fish are not attractive, they are cheap and have no nutritional value.

In addition to the external image of deformed fish, the internal structure will also be due to water quality and water, plus the body contains a large amount of formaldehyde, heavy metal substances and pesticide residues, for the sake of health, please give up decisively.

2. Fish that weigh too much

In life, many people buy fish when they see some oversized fish, the price is relatively low, so they buy more.

It is not recommended to eat fish with too much weight. Some fish are cultured artificially. During the growth of fish, a large amount of hormones are added to increase the weight of fish, which can be sold at a high price.

Regular consumption of this type of fish containing hormones is likely to increase the metabolic burden on the liver and kidneys, so try to eat less for health.

3. Very smelly fish

It's normal for fish to have some fishy smell!

When you buy fish, if you smell a strong peculiar smell of fish, such as the smell of chemicals and diesel, do not buy it, because this kind of fish is about to grow in seriously polluted waters, and the polluted water will contain heavy metals and fake blood components, which will cause some harm and disease after contact

4. Grill fish

"Beer drink ham sausage, three small barbecue meals a day" is a popular Internet phrase,

As one of the most popular summer food, barbecue is loved by many young people.

Although barbecued fish is delicious, it will generate more harmful carcinogens such as carbon dioxide and benzo pyrene in the process of charcoal roasting. Eating it regularly will increase the risk of cancer, so try to eat less!

5, salted fish

When it comes to salted fish, I believe we all know something about it. Fresh fish is processed and made with a lot of salt.

In the process of curing fish, a large number of additives and excessive intake of edible salt will increase the vascular burden, increase blood pressure and cause cardiovascular and cerebrovascular diseases, and the nutritional value is not high, so eat as little as possible!

03

Extension: New US study: Eating fish may increase cancer risk

Published in the journal cancer causes and control of surprisingly, a study from researchers at brown university in the United States on a survey of 491000 americans a year for fish habit, the result found that, compared with 3.2 grams of fish every day people eat 42.8 grams (a) two fish of malignant melanoma risk by 22%, 0 28% increased risk of melanoma, Daily increases in tuna and non-fried fish increased the risk of malignant melanoma by 20 percent and 18 percent, respectively.

In fact, it is not the fish that causes cancer, but the pollutants such as dioxins, arsenic and mercury that remain in the fish, which are also clear carcinogens. People who eat more fish every day naturally ingest more harmful substances.

Although fish is rich in nutrition, it is also easy to cause food allergy and aggravate the digestion and detoxification ability of the liver. Therefore, if the liver and kidney are not good, it is recommended to control the dosage and try not to ignore it!