Carcinogenic, which scares many people! So what are the things that have the highest likelihood of causing cancer? What are the nearest carcinogens to you? I believe you are all very curious, don’t worry, let me tell you.
Classification of carcinogens
According to the carcinogenic risk to human, IARC classifies carcinogens into 5 categories: 1, 2A, 2B, 3 and 4.
Category 1 carcinogens, i.e. those with sufficient evidence of carcinogenic effects on humans, are clear human carcinogens. Of course, it has to do with the amount, time, etc. As of October 2015, there are 118 members on the list of Category 1 carcinogenic factors!
Through combing, it is found that the nearest ones that are often found around you are mainly the following, aflatoxin, formaldehyde, nicotine, nitrosamines (the precursor substance is nitrite, i.e. nitrite is converted into nitrosamines only under specific conditions), benzo(a)pyrene, arsenic, alcohol, etc.
I. Aflatoxin: one of the most powerful biological carcinogens
A very small dose of aflatoxin is potentially carcinogenic! It is one of the strongest biological carcinogens known to us. Beware! Aflatoxin is hidden in all these foods!
1.Moldy peanut corn
Aflatoxin is hidden in moldy food, especially in food with high starch content, peanuts, corn, etc. Rice, millet, beans, especially in a hot and humid environment, once moldy will also fall into its clutches.
2, spoiled rice
Don’t think you can let your guard down when you’re cooked, spoiled rice is the most likely to produce aflatoxin!
3, bitter nuts
If you eat bitter melon seeds, be sure to promptly spit out and gargle.
4, poor quality sesame paste
Some businesses in order to reduce costs, with bran sesame, deflated peanuts or even spoiled sesame, peanuts as raw materials, which contains aflatoxin in the spoiled peanuts. And this processed product, compared to moldy peanuts difficult to identify much more.
5, informal small workshop self-expressed oil
Some oil crops such as peanuts, corn, etc. in the storage process if moldy, the oil extracted may also bring in aflatoxin.
Some peanuts are normal in appearance, but the internal aflatoxin has appeared, and informal small workshop presses or home oil presses simple process, the lack of removal of harmful substances process, can not refine the raw materials.
Second, benzo(a)pyrene: can induce a variety of cancer!
Animal experiments have proven that long-term inhalation or consumption of food containing high levels of benzo(a)pyrene is likely to induce lung cancer, liver cancer, gastrointestinal tract cancer, etc.
Be careful! These things contain benzo(a)pyrene!
1.High temperature fried food
Multiple use of high temperature vegetable oil, deep-fried, fried food can produce benzo(a)pyrene. The content of charred food is 10-20 times higher than that of ordinary food.
2, frying oil smoke
It has been determined that the cooking oil heated to 270 degrees Celsius produces fumes containing compounds such as benzo(a)pyrene.
The most erroneous practice is: the oil in the pan smoking before you put vegetables! After frying a dish, do not brush the pan and then fry!
3, smoked food
Charcoal, the fuel used for smoking, already contains a small amount of benzopyrene, and at high temperatures they are likely to invade the food with the smoke. On the other hand, the smoked fish or meat itself contains sugar and fat incomplete combustion will also produce benzo(a)pyrene.
4.Inks
Ink contains carbon black, which contains several carcinogenic polycyclic aromatic hydrocarbons, especially the high content of benzo(a)pyrene. Some food wrappers can directly contaminate food when the ink is not dry. Many people like to wrap strawberries and cabbage with newspaper to keep them fresh, so they are more likely to come into contact with benzo(a)pyrene.
5.Automobile exhaust
Car exhaust contains more benzo(a)pyrene.
Three, nitrite: toxic and indirectly carcinogenic!
Nitrite itself is not carcinogenic, but entering the body will combine with proteolytic substances in the stomach to form carcinogenic nitrosamines. Nitrate and nitrite, the difference between the word, but the former is non-toxic, the latter is toxic in large quantities. Be careful, these foods contain nitrites!
1.Cooked meat products
Nitrite is a food additive licensed for use in various countries, mainly in meat products. It can make the meat more red and color pleasing.
Regular meat products factory products can be assured that the addition of nitrite will control the amount, there are also national departments of inspection and management.
But roadside stalls, small workshops and other products must be beware.
2, long storage of leafy greens
Fresh vegetables nitrite content is very low, if you buy leafy greens and did not immediately eat, but put two or three days to eat, where the nitrite is likely to rise.
3, overnight vegetables
The longer you put, the more nitrite produced.
4, pickled vegetables
It is necessary to know a general rule: the first one or two weeks of pickled vegetables have the highest nitrite content, and the content is very low after 20-30 days.
The clinical appearance of eating pickled vegetables poisoning patients, generally eat “pop pickles”, that is, pickled vegetables very short time.
5.Hot pot soup
There are experiments to determine the value of nitrite in hot pot soup is not enough to cause acute poisoning in most people, but the content of amino acids and amines is relatively high, and it is possible to synthesize nitrosamines with nitrite carcinogens under heating conditions, and the risk of cancer induction should not be underestimated if eaten frequently.
Four, formaldehyde: carcinogenic and teratogenic!
Several studies have found that formaldehyde can induce cancers of the mouth, nose, throat, skin and digestive system.
A study conducted by Yokohama National University in Japan showed that the release of formaldehyde is a slow and long-term process. This release period is as long as 10 to 15 years and can cause long-term, irreversible harm to the human body. Be careful, these things were found to exceed the formaldehyde standard!
1, car foot mats
In August 2015, Ningbo city market supervision department staff on car foot mats a test results show that the random purchase of 22 groups of car foot mats samples, 17 groups of formaldehyde concentration exceeded the limit. Among them, the most serious exceeded 127.3 times.
Newly purchased car mats are recommended not to use immediately, should first be dried in the sun to accelerate the volatilization of organic substances. If you feel the foot mats irritating smell heavy, to be replaced in a timely manner.
2, the decoration of the hooking glue
Have done a formaldehyde long-term release experiments show that no matter how good the material to buy, as long as the use of urea-formaldehyde resin adhesive, formaldehyde may remain for a long time.
Urea-formaldehyde resin glue is used to decorate the house when the seam glue, is used for doors and windows, furniture, flooring and other corners, joints.
3, poor quality imitation porcelain tableware
Imitation of porcelain tableware, at room temperature, there is no toxicity, and good stability. But poor-quality imitation porcelain tableware is not safe.
Five, nicotine
Tobacco – smoking can inhale nicotine, I believe that many people know. But you may not understand is that the smoke produced by burning cigarettes contains at least 2,000 harmful ingredients, in addition to nicotine, there are benzo(a)pyrene, nitrosamines, etc.! So, for the sake of life (you and those around you), stay away from tobacco!
Of course, finally to remind you that the above introduced several carcinogenic substances, but does not mean that, as long as you are exposed to any one, it will definitely cause cancer, after all, leaving the dose and exposure time to talk about carcinogenic, are not scientific!