When it comes to home appliances, people are probably most worried about electromagnetic pollution. In fact, electromagnetic radiation is very common at home, because electronic components such as coils are widely used in household appliances. It is no exaggeration to say that objects with electromagnetic coils will radiate when they work, and it is only a matter of radiation size and shielding.

When it comes to electromagnetic radiation, I'm afraid the first thing you think of is microwave ovens and induction cookers. For microwave ovens, there is usually a complete metal shell with a small protective plate outside the fuselage. In addition, the sliding door of the microwave oven has a protective lock, so the microwave leakage is limited. Moreover, when using the microwave oven, few people need to stick to it and stare at the food, so it is less harmful to people.

In contrast, the electromagnetic radiation of induction cooker is much more open. The induction cooker will produce extremely low frequency electric and magnetic fields during its operation. Because it is separated from metal heating objects, the electromagnetic radiation of induction cooker is several tens or even hundreds times higher than that of ordinary household appliances, but fortunately, the radiation of induction cooker is upward. In other words, as long as the side shield of the induction cooker is safe and effective, and the operator keeps a certain distance from the side, there is no problem in normal use. However, when using the induction cooker, people need to keep a close distance, so its radiation impact is far greater than that of TV and computer.

Because there is no relevant standard of extremely low frequency electromagnetic field in China at present, the radiation degree of induction cookers in the market is unknown. Professor Zhu Changshou from the Institute of Radiation Protection and Nuclear Safety Medicine of China Center for Disease Control and Prevention told reporters that radiation can be roughly divided into ionizing radiation and non-ionizing radiation. In addition to ionizing radiation, most of our families are faced with non-ionizing radiation, among which high-frequency radiation has the greatest influence on people.

According to the data of the National Bureau of Statistics, there will be 70 million to 80 million induction cookers in China in the next five years, and the market capacity will reach tens of billions of yuan. However, when a large number of induction cookers enter thousands of households, the symptoms of electromagnetic pollution are increasingly apparent.

So what is magnetic leakage? Zhao Yufeng, deputy director of the Indoor Environment Monitoring Committee of China Interior Decoration Association, told the reporter that the induction cooker uses electromagnetic induction to generate magnetic eddy current to heat food, which will produce extremely low-frequency electric and magnetic fields when working, and will cause electromagnetic pollution to the environment in a certain range. The World Health Organization regards extremely low frequency electromagnetic field as a suspected carcinogen, which belongs to the same kind of carcinogen as benzene and welding smoke.

It is understood that China's domestic products have serious magnetic leakage. According to experts, the degree of magnetic leakage is measured by the strength of electric and magnetic fields. Zhao Yufeng investigated and measured the electromagnetic field intensity of several brands of induction cookers. The results show that the near-field electric field intensity can reach several thousand volts/meter, and the near-field magnetic field intensity can reach several micro-Tesla to several hundred micro-Tesla. Because there is no relevant standard in China, a considerable proportion of products in China seriously exceed the standard if evaluated according to the national standard of 0.2 micro Tesla in Switzerland, Sweden and other countries.

Another expert said that at present, electromagnetic induction cooker products sold in China are rarely submitted for inspection, and almost all of them are exported to international markets such as the European Union, the United States and Japan. This is because the United States and other countries have mandatory international standards for products, and although China requires enterprises to implement this standard in principle, it lacks mandatory measures. Two years ago, the National Household Electrical Appliances Quality Supervision and Inspection Center conducted a diagnosis and inspection of induction cooker products in the whole industry, and it was found that only about 50% of the products were up to standard.

Another article is attached for reference:

Harm of three big items at home to pregnant women

(Sichuan Online)

Today, electric radiation is everywhere in homes, offices and streets. Do they harm pregnant women and unborn babies?

Various household appliances greatly facilitate our daily life, such as vacuum cleaner, induction cooker, microwave oven, oven, computer, TV, radio and even electronic alarm clock, but at the same time, we are also surrounded by them, surrounded by invisible but ubiquitous electromagnetic waves!

When the switch of bedside lamp is turned on, the voltage in the wire will produce an electric field before the lamp is turned on; If we turn on the light, the current will pass and the electrons will move to produce a magnetic field. Sometimes the electric field and the magnetic field are mixed and interact with each other, so that we can't tell them apart. Therefore, we call it electromagnetic field.

It is this electromagnetic wave around us, a wave formed by a light beam moving in the air. When the light beam meets the human body in the air, it will unconsciously enter the human body, causing the cells to heat up, but in any case, it will not affect human health in the short term, because the absorbed heat will be naturally emitted soon. In addition, our bodies are used to "exercise", especially being "heated" in the sun, so it will not affect our body functions.

Escape from electromagnetic radiation?

We know little about the long-term effects of electromagnetic radiation. Is it dangerous for us to touch all kinds of electrical appliances every day, especially pregnant children? No one can prove that radio waves and electric fields are harmless, and no one can prove that they are harmful. For more than 20 years, research in this field has been going on, and the statement is contradictory.

What are people worried about radio waves? I'm worried that radio waves will cause anxiety, heartbeat, headache and irritability, and long-term contact will cause cancer, especially living near high-voltage lines. However, all this has not been confirmed, and similarly, it has not been clearly refuted.

In fact, for pregnant women, there is no need to worry about fetal malformation caused by electromagnetic waves. Because the fetus has our thick abdominal skin and cell tissue protection, and amniotic fluid isolation. However, people are still questioning whether electromagnetic waves can lead to spontaneous abortion and premature delivery. In this regard, scientific research is still blank and there is no positive or negative conclusion.

Faced with this lack of definitive conclusions, experts suggest that pregnant women should be careful to avoid contact with electromagnetic waves. When we don't know whether electromagnetic waves are good or bad, we should be cautious, but don't be too nervous.

Microwave oven: Microwave is also electromagnetic wave.

Microwave oven, it is a good helper for our fast cooking. Soon, you may use it to heat milk and vegetable rice for children. As the name implies, microwave ovens emit electromagnetic waves, which makes people wonder whether it is harmful to health. Dr. Roster, Ph.D. in Physics, French National Institute of Agricultural Chemistry, explained: "In the microwave oven, the molecules of food are vibrated by high-frequency electromagnetic waves to generate heat, and chickens or fish can be cooked. The key problem is that if the microwave oven is not well sealed, it will also shake the molecules on the user next to it! "

However, in design, the microwave oven should be completely sealed to avoid any microwave leakage. Obviously, if the microwave oven we use is not newly bought, the rubber gasket of the door may not be sealed well. How can we know? Do a simple experiment: close the door of the microwave oven, open it to the maximum and let it run. Stick a layer of aluminum paper on the outside of the door, which is bigger than the microwave oven. If you hear the "magnetic" sound on the paper, it proves that the door of the microwave oven is not well sealed, and the electromagnetic wave emitted hits the metal paper! Experts remind: the best way is to replace the microwave oven! Of course, it is also important to clean the microwave oven regularly. Be careful not to bump into the microwave oven when handling.

Induction cooker: Be careful!

The induction cooker is easy to maintain, and it is not easy to burn children's small hands. At the same time, the temperature can be controlled very accurately. In addition, its glass-ceramic appearance is also very beautiful. In short, the induction cooker is an increasingly attractive household appliance.

People trust the quality of food cooked by induction cooker, but few people question its possible impact. In fact, the electromagnetic field emitted by the induction cooker is very high: thousands or even tens of thousands times higher than that of the refrigerator.

This is already a high electromagnetic field. When a pregnant woman cooks, the fetus in her belly is just at the height of the induction cooker.

Be very careful, "transfer" the cooking spoon to your future father, and stay away from the stove yourself! Studies have confirmed that the electromagnetic intensity drops very quickly when it is far away from the emission source. Therefore, its side effects (if any) are also inversely proportional to the distance, and the farther the distance, the smaller the impact.

Maybe your husband can't cook at all, so take the second plan: cook faster. After putting food on the fire, don't always stand by the induction cooker and keep a certain distance from it, for example, 2 meters.

Be careful when using household appliances, but don't worry too much.

Computer: Electromagnetic waves radiate from the back of the screen.

Houses or offices without screens are very rare. Tv sets, computers and game consoles are inevitable ... apart from the static electricity we feel in front of the screen, as far as we know, TV sets and computers mainly emit radio waves from behind.

If possible, put the computer and TV against the wall to prevent you from passing through the place with the strongest electromagnetic field behind the TV or computer. When watching TV, it is best to keep the distance at about 2 meters, so that you can still see the picture clearly.

As for the computer, keeping a distance of 50 cm will greatly reduce the intensity of the electromagnetic field. Be careful not to lean your abdomen against the table. If there are multiple computers in your office, it's best to keep a distance of 1 m from them. If possible, it is best not to connect directly to the computer! However, there is no need to rearrange the office because of pregnancy, don't bother colleagues too much and don't force them to change the direction of their desks. You know, the harm of electromagnetic waves has not been confirmed yet, but the harm of excessive tension has indeed been confirmed.

Mobile phone: Even if it is wireless, there is still current flowing.

Using mobile phones also worries us! In fact, experiments on mice have concluded that exposing mice to the electromagnetic field emitted by mobile phones will increase the chances of brain tumors in mice. But the experimental conclusion is drawn from an animal weighing only a few grams, and it is unreasonable to infer to a person weighing dozens of kilograms.

What people can be sure of is that using mobile phones will lead to changes in brain activity.

Then, people don't know how to deal with this information.

As for the possible impact of using mobile phones on the fetus, there is no systematic study at present. At least, there is still doubt. So the advice for pregnant women is: If you have a landline, you'd better not use a mobile phone. In particular, avoid putting your mobile phone on your stomach, for example, kindly let the fetus in your stomach listen to the voice of your father who is away on business, or listen to the phone call from your grandmother who is far away.