Does eating overnight food for a long time really increase the risk of cancer?

"Don't ever eat overnight vegetables again, otherwise it will cause cancer!"

Master Wang is 68 years old, and although his family conditions are not bad, he is relatively frugal. Whenever there are leftovers at home, Moncler wang always can't throw them away. When the next meal, he will heat the dish to continue to eat.

Last night there were guests at home, so Master Wang made a lot of dishes. Because the dishes were a little too much, there was little left to eat. The next day, Master Wang took out the leftovers and warmed them up to continue eating. The neighbors of the Moncler outlet online saw Moncler outlet him eating the leftovers and advised him not to eat the leftovers and said the words at the beginning of the article.

After listening to the neighbor's advice, Master Wang was not impressed and said: I have been eating overnight food for decades, but now my body is fine, right? It's pure nonsense that rice causes cancer! The neighbors shook their heads and said nothing more after listening to the remarks of Master Wang.

In real life, there may be many people who have the habit of eating overnight vegetables. So, does eating overnight food for a long time increase the risk of cancer? To let you have more knowledge and understanding about overnight vegetables, today, Healer's Good Word will have a good chat with you about it.

1. Why do some people think that overnight vegetables are carcinogenic?

At present, those who think that overnight vegetables are carcinogenic mainly originate from two main reasons, namely, the high nitrite content in overnight vegetables and the excessive number of bacteria in overnight vegetables!

Some people believe that overnight vegetables contain a lot of nitrites and that the amount of nitrites increases as the vegetables are left for longer periods. At the same time, leftover vegetables produce more nitrites when they are heated. Although nitrite is not carcinogenic, it will enter the body under specific conditions to produce nitrosamines, which is a carcinogenic substance. Therefore, eating leftover vegetables for a long time will increase the risk of cancer.

Some friends also believe that if the dish is not finished in time, then it may breed a lot of bacteria as it sits for a longer period. After the number of bacteria in the leftovers increases, they may rot. When the dish is rotten, it may contain some carcinogenic substances. Therefore, eating overnight vegetables for a long time may increase the risk of cancer.

2. Does long-term eating of overnight vegetables increase the risk of cancer? CCTV answers with a test!

Before that, an experiment was done. In this experiment, the experimenter tested the nitrite content of 4 kinds of food after 15 hours. It was found that the nitrite content in the four foods tested had increased to some extent, but they were still within the safe range. In other words, food left for 15 hours did not increase the risk of cancer because of the increased nitrite content.

Although it is true that the number of bacteria in leftovers increases as they sit for longer, this does not necessarily mean that they are unsafe. The number of bacteria in leftovers can only be harmful to human health if they reach a certain level.

At the same time, the speed of bacterial growth in leftovers is also related to the temperature at which they are placed. Previously, there were 30 different kinds of dishes were tested, and the results found that the vegetables were kept in an environment of 4 ℃ and 25 ℃, the former is not easy to deteriorate.

Objectively speaking, overnight vegetables in the process of storage, the bacteria in them may indeed turn the nitrates inside into toxic nitrites. It is important to note here that talking about carcinogenesis aside from the dose is a hooligan. If leftovers are left in the refrigerator overnight, the nitrite content in the leftovers is not enough to reach the dose that causes disease.

Take spinach for example, if you put it in the refrigerator at 4℃ for 24 hours, the nitrite content will rise from 3mg/kg to 7mg/kg, but the amount of nitrite contained in it will still be low. In general, a person may be poisoned by ingesting 200mg of nitrite at a time, but to achieve this amount, you need to eat 28.5kg of overnight spinach at a time, which is not very realistic.

The fact is that there are several safety risks associated with eating overnight vegetables but to say that it is poisonous like arsenic is also a bit of an exaggeration. But it should be noted that although overnight vegetables can not eat as much as possible, otherwise they may be harmful to human health, such as causing acute poisoning, acute gastroenteritis, etc.

3. Overnight vegetables should be how to eat to be safe?

It must be said that overnight vegetables will not only lose part of their nutritional value, and the content of nitrite inside will also increase. With the extension of storage time and temperature, the content of nitrite in leftover vegetables is also gradually increased.

Said the overnight vegetables, here again about the overnight meat. Generally speaking, the content of nitrite in meat is relatively low, and the safety of meat mainly comes from the number of bacteria in meat. Compared with vegetables, meat is more likely to breed bacteria. Even if the meat is put in the refrigerator at about 4 ℃, after a few days, it will still breed bacteria inside. If the leftover meat is left at room temperature, it will soon grow harmful bacteria on it. In this case, it may produce hydrogen sulfide, amines, phenols, and other substances, long-term eating leftover meat will certainly have the risk of cancer.

Given the characteristics of overnight vegetables and overnight meat, the following 2 points are summarized here.

❶ Overnight vegetables.

The reason why nitrite is produced in vegetables is that the raw material is nitrate in vegetables, and the condition for conversion is a certain amount of bacteria. Therefore, to reduce the production of nitrite, you need to start from these two points.

On the one hand, we should reduce the preservation time of green vegetables and increase the frequency of buying vegetables appropriately. On the other hand, for the vegetables that we can't finish eating, we can wash them and put hermit in the refrigerator to chill.

For cold vegetables, it is not suitable to eat them the next day. This is because when heated, the taste will deteriorate and a lot of nutrients will be lost as well. If they are not heated, then they may cause acute gastroenteritis.

❷ Overnight meat.

As already mentioned above, the problem with overnight meat rest is that the number of bacteria exceeds the standard.

Therefore, we should not buy too much meat when we go to buy meat, and we also need to reduce storage time. If you need to keep it, then try to put it in the freezer.

If the leftover cooked meat is not finished then try to keep it airtight and try to finish it at the next meal. Before eating leftover meat, make sure to warm it up before eating it. When heating leftovers, it is not recommended to add other ingredients to them to avoid having leftovers again. After repeated heating of meat, although the taste may be reduced, at the very least it is relatively safe.