It is recommended to stop eating these 5 kinds of fish, or there may be formaldehyde and heavy metals, you may wish to pass it on to your family

Introduction: Running on the ground is not as good as flying in the sky, and flying in the sky is not as good as swimming in the water...

Fish swim mainly in water. Compared with the pig, beef and lamb that people often eat, eating more fish is more beneficial to health. Fish are very common in our life. It can be said that fish is healthy white meat.

Eating a little fish every day is not only good for health, but it can also replenish the nutritional needs of the body in time. China's "Dietary Guidelines for Chinese Residents" also recommends eating fish or 300-500 grams of fish twice a week, with an average of 40-75 grams per day.

01

What are the health benefits of eating fish?

1. Reduce cardiovascular and cerebrovascular diseases

Fish can reduce the incidence of cardiovascular and cerebrovascular diseases because fish is rich in polyunsaturated fatty acids. Polyunsaturated fatty acids can inhibit the aggregation of platelets and make the blood relatively thin.

Prevention of embolic diseases, prevention of cerebral infarction, angina pectoris, myocardial infarction, atherosclerosis and other chronic metabolic diseases.

2. Helps human development

Fish is rich in protein, and every 500 grams of fish contains protein, which is equivalent to 600 grams of eggs or 850 grams of pork.

Abundant protein is the carrier of human life, which has the functions of balancing nutrition, regulating water balance in the body, and improving immunity. It can effectively help the growth and development of children, children and adolescents.

3. Prevent obesity

When it comes to meat, everyone's first thought is easy to gain weight, but this may be the exception of fish. Fish is high in protein, low in fat (especially saturated fat) and low in calories, but good for obesity prevention.

4. Prevent Alzheimer's

Fish is rich in vitamin B12 and other nutrients that can maintain normal nerve function in the human body. Eating fish in moderation can help prevent senile depression and Alzheimer's disease.

For expectant mothers, eating fish can not only meet daily nutritional needs, but also help give birth to children and promote brain development. For others, eating fish in middle-aged and elderly people may also delay brain aging.

02

It is recommended to stop eating these five kinds of fish, or if there is formaldehyde and heavy metals, you may wish to pass it on to your family

1. smelly fish

Due to the existence of gills, fish can only live in water, and some areas have serious environmental pollution and water pollution. If fish live in these waters, they may contain some litter and toxins.

After the water is polluted, if the fish live in waters containing formaldehyde, some industrial wastes such as formaldehyde may be mixed. Then the fish will have a great fishy smell and other odors, so don't eat fish with peculiar smells.

2. Deformed fish

There are a lot of fish in the market these days, every kind of fish is very popular, sometimes you will find some misshapen fish. This fish might suddenly grab your attention, and it doesn't look any worse than others.

When selling chicken heart fish, the hawker will also say that his meat is delicious, but this deformed fish is not good for his health. Because the meat inside is spoiled and contains a lot of formaldehyde, heavy metals and various pesticide residues.

3. Unexplained dead fish

If the fish die in their natural state, there will be no health effects when ingested. However, be careful if the fish accidentally die from eating too many pollutants or other reasons.

Even if the fish die for a short period of time, it is easy to cause the fish to spoil in such a short period of time. This is mainly due to the presence of certain bacteria on the surface, gills and gut of the fish, which can cause the bacteria to multiply.

Long-term dead fish will produce more formaldehyde and heavy metal elements. Frequent intake of stale dead fish will increase the burden on the stomach, induce gastritis, gastric ulcers, and even deteriorate into gastric cancer.

4. Freshly slaughtered fish

Everyone wants to buy fresh when they buy fish. If you encounter freshly slaughtered fish, I believe many people think it is very fresh and will buy some. But this fish is unhealthy and may have harmful substances.

If the fish that has just been slaughtered is eaten immediately, it will lead to formaldehyde, heavy metals and other substances in the fish. After these substances enter the body, they will reach various parts of the body. Properly, freshly slaughtered fish should sit for two hours before cooking.

5. Pickled salted fish

The salt content of salted fish exceeds the standard, and a large amount of nitrite is produced during the curing process. Long-term consumption of this fish can greatly increase the risk of cancer.

In addition, Chinese salted fish is specifically marked on the WHO list, indicating that there is sufficient evidence that it contains carcinogens.

People who eat salted fish regularly have data showing that the incidence of nasopharyngeal cancer is about 30 times that of people who do not eat salted fish often, so doctors recommend eating less salted fish for our health and to prevent cancer.

For children, the toxicity of salted fish will be higher, because the child's body system has not been fully completed, so children are advised not to eat salted fish as much as possible.

03

How to choose fresh fish?

1. Look at the eyes

When buying fish, no matter what kind of fish you buy, the first and most intuitive thing is to look at your eyes. If a fish is stored for a long time and the fish is not fresh, the protective film on the outer layer of the fish eye will appear white.

And the eyes of the fish will obviously be very sunken and cloudy. Therefore, this kind of fish has a long storage time and is very stale.

2. Elasticity

Fresh is generally very energetic and will keep breathing. When you pinch its body, you can clearly feel its body rising and falling, which is good elasticity.

On the contrary, if the body of the fish is very hard, it means that its vitality is not very good, it may not be very fresh, it is best not to buy it.

3. Fish scales

We all know that fish scales are indeed a good ingredient, it contains a lot of nutrients, and even some people especially like to eat fish scales. So if the scales are not shiny, or even fall off a lot, the fish is not very fresh.

So if we want to buy fish, it is better not to buy such fish. Be sure to choose fish whose scales look more complete and reflect the freshest fish.

4. Fins

Choosing a fish depends on the fins of the fish. If we see a fish with very strong fins, very strong, then the fish is very mobile.

This fish is usually best for cooking and it tastes great. If there is a problem with the fins, then the quality of the fish is not good.