Source: Lao Xie chats
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Aunt Wang lived with her parents-in-law when she was young, and later had a child with several members of the family, and she cooked a lot every time.
This habit has not changed since then, and when only Aunt Wang and her husband are left in the house, they will cook more.
So sometimes it happens that you cook a meal and eat it twice, and the rest of the meal is put directly in the refrigerator.
Once, Aunt Wang's daughter came back and saw a lot of leftover fried green vegetables in the refrigerator, and when she took them out and was about to throw them out, she was seen by Aunt Wang, and quickly stepped forward to stop them.
"It's good to put this food in the refrigerator, why do you want to dump it for me?"
"Mom, how many times have I told you on the phone, don't put the leftover vegetables in the refrigerator, just throw them away if you can't finish eating, otherwise your body will be easy to get sick. ”
"I've eaten like this all my life, and I don't see anything wrong with it. ”
Aunt Wang's daughter shook her head and said, "It's true that overnight green vegetables contain a lot of nitrite, and eating this thing is easy to cause cancer." ”
Aunt Wang said suspiciously: "Why haven't I heard of this kind of thing, don't lie to me." ”
In the end, there was an argument, and the vegetables that were left overnight were not thrown out.
For nitrite, which is no stranger to people now, it is a carcinogen.
When a certain amount is reached, it can cause serious damage and threaten health when it enters the human body.
1. What is nitrite?
Nitrite is an inorganic compound that, after entering the human body, produces a chemical reaction that combines with ammonia to form a stronger carcinogen, nitrite amine.
The reason why people suffer from stomach cancer is related to nitrite amine, which is also one of the major culprits of stomach cancer and esophageal cancer.
Simply speaking, nitrite is also toxic, and it is very toxic.
Under normal circumstances, ingestion of 0.2~0.3g of nitrite will lead to human poisoning, and people will die when it reaches three grams.
Therefore, the World Health Organization has listed nitrite as a group II carcinogen in 2010.
Nitrite is produced in many ways, and there are some areas where nitrite is naturally present in water and soil.
And what is related to our lives is food, and there is a high probability that nitrite will appear after food has been left for a long time.
That's why people aren't allowed to eat vegetables or other meals that have been sitting out for too long.
Because bacteria are formed when it comes into contact with the air, nitrite can easily be formed in such an environment.
Even after exposure to bacteria and air, nitrite can be formed after it is not produced and then enters the body, and after a series of processes.
So many people may ask, since nitrite has been listed as a carcinogen, why is it added to food?
In fact, there are mandatory standards for the addition of nitrite in our country.
Under normal circumstances, as long as the amount added meets the national regulations, there is no harm to the body and does not bring the so-called serious threat.
But many people don't pay attention to the fact that there are three kinds of meals with high nitrite content, which is a hidden danger to health, and everyone should try to eat as little as possible.
Second, the content of 3 kinds of meals is extremely high
1. Processed meat
Processed meat is now a very popular food, bought from the supermarket or shopping mall, you can eat it right out of the bag, and the processed meat is very fragrant and flavorful.
However, in processed meats, nitrite levels are not low.
In the production process, in order to prevent the growth of bacteria and to maintain the appearance of the finished product, an appropriate amount of nitrite is added to maintain its condition.
However, processed meat products contain a lot of salt and nitrite, which are likely to be converted into nitrosamines after entering the human body, so they pose a certain threat to the human body.
Therefore, it is necessary to reduce the intake of processed meat in daily life.
If you usually like to eat it and eat it more frequently, it will lead to excessive intake of nitrite, and there will be a certain conversion after entering the human body.
People who regularly eat processed meat products have a significantly increased risk of cancer compared to those who eat a normal diet.
2. Overnight green vegetables
Green vegetables play a very important role in people's diet, and we have absolute trust in green vegetables.
Therefore, when some people say that green vegetables are likely to cause cancer, they will be refuted by many people.
In fact, under normal circumstances, green vegetables must have a positive effect on the body, as well as a variety of nutrients.
But leafy greens that have been stored overnight after cooking have different meanings than fresh leafy greens.
A lot of salt is put in the cooking process, and the leafy greens themselves contain a certain amount of nitrite.
When the storage time becomes longer and the ambient temperature is very high, the nitrite content will also increase.
Just like Aunt Wang's daughter said, there is actually a certain truth, and green vegetables overnight are not recommended to eat.
Fresh vegetables should be eaten as much as you want each time, and it is best to eat them all at once, and try to throw them away if you can't finish them.
3. Pickled vegetables
Pickled dishes are generally very popular, and a lot of seasonings are added, and after a long time of preparation, the taste is different when you eat it again.
But usually, a lot of edible salt is added to the preparation of pickles and they are soaked in liquid, which results in a very high nitrite content.
Nitrite enters the inside of the food and follows it into the human body.
This will also lead to long-term use of nitrite, and the risk of cancer will definitely be much greater, so it is recommended that everyone consume pickles in less as well.
The ingredients used to pickle vegetables are indeed very nutritious, but after a lot of salt and a long period of pickling, they will be different.
The nitrite content of the above three foods is relatively high, so try to eat less or no nitrite in life.
Especially leafy greens overnight, most of which are not very expensive.
If you don't finish it the first time, just throw it away, and don't end up spending a lot of money just to save this little money.
In addition to the above three foods, the following foods will also have a certain nitrite content, try to avoid.
3. These foods should also be avoided as much as possible
1. The charred part of the meat
Barbecue or barbecue is a very popular food of all ages nowadays, and some meat is marinated and then grilled.
This food itself contains a certain amount of nitrate, which in some cases will be reduced to nitrite.
Especially in high temperature environments, where a long roasting time can lead to nitrite.
When we eat barbecue or barbecue, nitrite has already been produced, so try to avoid barbecue and other foods.
2. Hot pot soup that has been boiled for a long time
As a food that contemporary young people like very much, hot pot is not recommended to be used for a second time in hot pot soup.
Because there are a lot of vegetables and all kinds of processed meat products in the hot pot soup, when it is cooked for a long time, the nitrite contained in it will be in the hot pot soup.
If you eat it a second time, the nitrite content in the hot pot soup will be more than the basic content, so it is not recommended to use the hot pot soup for the second time or cook it for too long.
The above two kinds should also be avoided in daily life, otherwise it is really easy to harm your health for a long time, resulting in a great increase in the risk of cancer.
So in addition to avoiding nitrites, what can we do in terms of diet to prevent cancer?
Fourth, do this on the diet to prevent cancer
1. Increase your intake of whole grains
Nowadays, people's living conditions have improved, and it can be seen from the staple food in terms of eating, most of which are mainly exquisite white rice or white noodles.
Fine rice noodles are actually nutritious, but they are not the same as whole grains or whole grains.
Whole grains contain dietary fiber, B vitamins and minerals, which can provide a variety of nutrients for the body.
And it can make blood sugar more stable after eating, which is more friendly to middle-aged and elderly people.
2. Consume an appropriate amount of soy products every day
Soy products are an underrated type of food that is made from soybeans as a raw material.
Most of the soy products are not complicated to process, and the original nutritional value of soybeans is retained.
Flavonoids in soybeans can play a role in preventing cancer.
In the "Dietary Guidelines for Chinese Residents", it is recommended that the daily intake of soybeans per person should reach 25g, which can be adjusted appropriately according to the individual's physical acceptance.
When sufficient intake of soy products can reduce the risk of breast cancer and can also play a role in health care.
Summary:
Nitrite is a proven carcinogen that can be found everywhere in our lives.
Although the intake is relatively small at a time, there are some foods that are very high in nitrite.
A series of transformations in the body can lead to a greatly increased risk of cancer.
Therefore, in daily life, we must pay attention to the selection of ingredients, and try not to touch some things that cannot be eaten.
Otherwise, excessive nitrite levels are likely to cause serious health problems when they enter the human body.
In addition to nitrite intake, we should also focus on increasing the variety of foods in our daily life, such as soy products or whole grains.
It can not only balance nutrition, but also prevent the occurrence of certain diseases, and long-term adherence to reasonable and scientific eating habits can make the body healthier.