I believe that everyone will often see a variety of health and health articles in the family group and the circle of friends, and it is inevitable to see some "new topics", such as: mobile phones can not be placed on the pillow, there is radiation; overnight dishes can not be eaten, will cause cancer; garlic can prevent new crown pneumonia...
But are these views true or false?
1 Mobile phone can not put the pillow side, there is radiation?
Mobile phones do have radiation, but the impact on the body is not large.
There are two kinds of radiation that are often said in life - non-ionizing radiation and ionizing radiation.
Non-ionizing radiation, the energy of radiation is very low, generally will not be harmful to the human body, mobile phones belong to non-ionizing radiation. In addition, microwave ovens, printers, hair dryers, computers and other home appliances are non-ionizing radiation; while X-rays, CT, etc. belong to ionizing radiation, excessive use will destroy cells, there is a certain risk of cancer.
Although you don't have to worry too much about the problem of mobile phone radiation, it is not recommended that the mobile phone be placed on the pillow side, which can be used to play at any time, increasing the chance of staying up late, which is also detrimental to health.
2 Garlic can prevent cancer and prevent new crown?
About garlic, there are always many rumors about it in life, it can kill bacteria, fight cancer, and even prevent new crown, what is the truth?
Garlic does have antibacterial properties, but there is no evidence that garlic can fight cancer and the new crown virus.
From the existing research, it has been found that the functional ingredients in garlic are mainly sulfur-containing compounds such as allicin, which have the effects of bacteriostatic and immune enhancement.
However, it should be noted that the above possible health effects of garlic are mostly the results of in vitro cell tests for isolated ingredients such as allicin or allicinine, which is different from eating garlic on a daily basis.
In other words, the content of allicin in garlic is limited, and if you want to have a corresponding effect, you must eat a lot of garlic, and garlic eating too much may cause adverse reactions such as fire and liver fever, and may also stimulate the stomach and intestines.
Tip: No food can fight cancer, even if certain ingredients are useful, it is also a prerequisite, to achieve a specific dose in a specific environment, not just take a few bites to be useful.
3 Disposable paper cup drinking hot water is toxic?
Hot coffee, hot milk tea, and disposable paper cups for office hospitality are all disposable, although they can be seen everywhere in life, but safety is constantly questioned.
There is a widely spread saying that using a disposable cup to fill hot water will precipitate the harmful substances in the cup, causing harm to the body and even causing cancer.
In fact, regular disposable paper cups are non-toxic.
The outer layer of the paper cup is ordinary paper, the inside is a layer of film, the material of the membrane is polyethylene - polyethylene has excellent heat resistance, only when the temperature exceeds 200 ° C, harmful substances will be produced; and its chemical stability is better, can withstand most of the acid and alkali erosion, excellent waterproofness.
【5 indicators to distinguish inferior paper cups】
Check whether there is an "SC" safety mark, manufacturer information, production date, etc.;
Paper cups with too white colors should be vigilant, and there may be chemicals such as fluorescent agents added;
Paper cups do not have a choking odor;
Gently squeeze the sides of the cup, if the cup body is too soft, gently tear it to break, this kind of paper cup is mostly unqualified, to choose a certain thickness, the cup body is structured paper cup;
There is no printing within 15mm from the mouth of the cup: when we drink water, our lips will touch the mouth of the cup, and the ink in the printing pattern may be ingested, causing certain hidden dangers to the body.
4 Overnight dishes can not be eaten?
Many people think that overnight dishes can not be eaten, on the one hand, because there is no nutrition, but also easy to breed bacteria; on the other hand, it is felt that it will produce nitrite after a long time, which may turn into carcinogen nitrosamines after entering the human body, which is not good for the body.
Is that overnight dish really not edible? An experiment by the Ningbo Food Inspection and Testing Institute in Zhejiang Province can tell you the answer:
* Stored at 4 ° C, whether meat or vegetables, the content of nitrite after 24 hours of placement is basically unchanged, the total number of colonies increases but is rare, there is no risk of consumption.
* Stored at 25 ° C, after 12 hours of placement, the content of nitrite in vegetables increases, and after 24 hours of placement, it is more obvious, while the content of nitrite in meat does not change much.
In general, it is best to put leftovers into the refrigerator in time, and vegetables and seafood are best not to stay overnight; when stored in the refrigerator, the crisper box or plastic wrap should be sealed to avoid cross-flavor and cross-infection.
5Can scaling your teeth hurt your teeth?
Many people will have sore teeth after washing their teeth, and their teeth seem to be loose, so they feel that scaling their teeth is harmful.
But in fact, 1-2 times a year to wash teeth is necessary.
We usually brush our teeth and can not guarantee the cleanliness of the mouth, there will be some food debris, foreign bodies in the gap between the teeth, calcifification into calculus after a long period of accumulation, easy to cause periodontitis, gingivitis and gum recession and other phenomena, is very unfavorable to the mouth.
At present, the commonly used ultrasonic scaling can not only remove dental calculus and plaque, but also polish the teeth and delay the growth of dental calculus. Therefore, scaling is a means of maintaining the health of teeth.
As for the looseness of the teeth, it is because the tartar that holds the teeth in place has been cleaned; within a week after the end of the cleaning, the teeth may still be sore, and some anti-sensitive toothpaste can be used when brushing.
This article is reproduced from the WeChat public account "China Women's Daily", source: I am a doctor official