The inner liner is toxic and carcinogenic. Is the rice cooker the 'catalyst' of liver cancer? Safe use, keep in mind 2 points

"The electric kettle will precipitate heavy metals. If you drink too much, it will not only be poisoned, but also cause cancer."

"Microwave ovens emit radiation. Eating food heated by microwave ovens for a long time will not only lose nutrients, but also cause bad changes in the body."

"The liner of the rice cooker is poisonous! Often cooking with the rice cooker is easy to get liver cancer"

"Boiling water with an electric kettle will precipitate heavy metals, and drinking it often will cause cancer"

I don't know if you have heard of similar sayings? Whether it is an electric kettle, a microwave oven or an electric rice cooker that is basically used every day, they are all electrical appliances that are very common in daily life. Are these "must-have" appliances really harmful to the human body?

1. Will the electric kettle boil water, will heavy metals be precipitated?

According to the Internet, some electric kettles on the market are made of cheap high-manganese steel. Using this kind of electric kettle to boil water will precipitate heavy metal manganese. Drinking too much of this water may cause cancer. Is this really the case?

Manganese is actually a trace element necessary for the human body. The 2013 edition of the "Reference Intake of Dietary Nutrients for Chinese Residents" recommends that the daily intake of manganese for adults should be 4.5 mg.

Too little manganese intake will affect neurodevelopment, and long-term excessive intake of manganese may induce neurological diseases such as dementia, lack of energy, and Parkinson's .

The manganese in the electric kettle actually exists in the form of dense tissue, and it is difficult to precipitate manganese in ordinary use. Even if it continues to cook for a long time, the precipitation of manganese is limited, so don’t worry too much.

But some friends may be worried, what if the electric kettle you bought will really release manganese? Even if the hot water bottle used can really precipitate manganese, there is no need to worry too much. After all, the maximum tolerated intake of manganese by the human body is 11 mg per day .

The highest concentration of 1.168 mg/L in the sampled hot water bottle can be found, and it is necessary to drink 9 liters of water boiled in an electric kettle to reach the upper limit of manganese intake by the human body.

However, it is recommended to buy an electric kettle, it is best to choose high borosilicate glass, or ceramic, PP material, and choose the one with the 3C certification mark.

2. Foods heated by microwave ovens are not only harmful but also carcinogenic?

It is reported on the Internet that microwave ovens have radiation, and heating in microwave ovens will cause the loss of nutrients in food. Eating food heated in microwave ovens for a long time is not only harmful but also may cause cancer.

Microwave ovens turn the water molecules in food quickly by converting electrical energy into microwaves, generating heat and heating the food quickly.

Microwave ovens actually heat water molecules in food, so the heating speed is related to the amount of water in the food. If you want to make the food softer, you can add a little water before heating.

Microwave ovens use electromagnetic waves to heat food. Compared with cooking methods such as roasting, roasting, and frying, they produce fewer harmful substances.

In terms of nutrient loss, foreign studies have found that no matter which cooking method is used, most of the nutrient contents have little change , and only the loss of vitamin C is more serious. However, compared to other methods, microwave ovens have less impact on vitamins.

What is the effect of microwave radiation on the human body? Microwave is a kind of electromagnetic wave, which is generated by the periodic change of electric field and magnetic field energy in the electromagnetic oscillation circuit.

In order to understand the harm of microwave ovens to the human body, the researchers chose two microwave ovens of different brands with a power of 700, and tested them at different locations and distances. Finally, they found that: short-term exposure, microwave ovens have little impact on people, and the distance from the microwave oven is very small. The farther away, the less radiation .

Professor Zhao Jinyuan of the Department of Occupational Diseases of Peking University Third Hospital pointed out that the shell of the microwave oven itself has a good shielding effect . When heating, the oven door is closed, and the amount of radiation leaked is very small. Even if the oven door is opened during use, the microwave will automatically power off and disappear.

Usually, you must choose the correct way to use the microwave oven, and avoid putting metal, plastic, carton, paper bags and other packaging into the microwave oven, so as not to cause ignition in the furnace or the release of toxic substances.

In addition, avoid putting shell foods such as eggs and grapes into the microwave oven to avoid explosions.

3. The inner coating of the rice cooker has fallen off, can it still be used?

After the inner coating of the rice cooker falls off, many people do not recommend continuing to use it. Why is this?

The inner pot of the rice cooker is generally made of aluminum, stainless steel or ceramic products, and the most common one is the aluminum inner pot. However, the aluminum liner cannot come into direct contact with food, so it will be protected with a coating.

The coating generally uses perfluorinated polymers such as polytetrafluoroethylene, which not only block but also anti-stick. The properties of perfluorinated polymers are very stable, not only have strong acid and alkali resistance, but also are not easy to decompose, and the decomposition temperature should reach above 250 .

Once the inner liner coating of the rice cooker falls off, it may cause problems such as sticking to the pan, burning, difficulty in cleaning, etc., and it may also lead to excessive intake of aluminum in the human body.

Excessive intake of aluminum may cause neurological lesions, and may also affect the body's absorption of calcium, phosphorus and other substances, and even induce diseases such as osteoporosis.

When using a rice cooker, avoid using a metal spatula, and avoid cooking scallops, crabs, bones, etc., so as not to scratch the coating. When cleaning, try to use a sponge or soft cloth instead of a steel ball to better protect the inner liner coating and prolong the service life of the rice cooker.

Whether it is an electric kettle, microwave oven or rice cooker, in fact, normal use is fine, and there is no need to worry too much. Pay attention to the method of use in normal use. Once it is damaged, it is recommended to replace it as soon as possible. When purchasing, you should also go to a regular place and choose a qualified product.

References:

[1] "Using this kind of electric rice cooker and electric kettle to cook and boil water, the heavy metals exceed the standard and will cause liver cancer to the upper body? I'm afraid after watching it for a while...". Family Doctor. 2022-05-09

[2] "Microwave Radiation Causes Cancer? Can't use microwave when pregnant? ". Run Run Shaw Hospital. 2020-09-12

[3] "Beware! If this happens to the rice cooker, don't use it! Hurry up and tell your family...". Popular Science China. 2022-04-08

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