The high incidence of cancer in China is caused by overnight dishes? Reminder: 4 kinds of overnight dishes are removed from the table as soon as possible
Overnight dishes are also fatal? The 68-year-old uncle suffered multiple organ failure from eating overnight vegetables, and the rescue failed.
Hong Bo from Jiangxi settled in Hangzhou with his daughter and son-in-law. All along, Hong Bo's health was not very good. He was diagnosed with chronic hepatitis B 30 years ago, as well as high blood pressure and coronary heart disease. Last year, he was diagnosed with liver cancer and is receiving targeted therapy.
Usually the daughter and son-in-law are very busy with business, leaving early and returning late. Hong Bo insisted on cooking to help them reduce their stress. I often cook more food the night before, and wait until noon the next day to heat it up by myself before eating.
On Saturday, Hong Bo made stir-fried pork intestines with chili, but his daughter and son-in-law did not come back for dinner because they were too busy. Hong Bo put the leftover dishes in the kitchen until his daughter and son-in-law came back to eat, but he forgot to put them in the refrigerator until the end .
At noon on Sunday, he simply heated up the remaining pig intestines and rice in the microwave and ate them himself. As a result, Hong Bo started to feel sick and vomit when he woke up from his afternoon nap. After he ate a little montmorillonite powder, he didn't take it seriously. But at night, Hong Bo started to have a fever of 40 degrees Celsius. He still didn't want to go to the hospital, and took the Ganmao Ling and ibuprofen prepared at home.
When his daughter found him on Monday morning, he was lying on the bed, unconscious and unresponsive. The daughter immediately sent Hong Bo to the hospital. After emergency treatment, Hong Bo was diagnosed with a series of symptoms including sepsis, septic shock, acute liver and kidney failure, and respiratory failure caused by intestinal infection, and immediately entered the EICU for emergency treatment.
However, due to the late time of Hong Bo's hospitalization, coupled with his own serious underlying diseases. After a week of rescue, Hong Bo still left.
The doctor said that the emergency department often receives patients who eat leftovers and cause health problems, especially those over 60 years old, who are reluctant to throw away leftovers. But once you eat spoiled food, you may be infected with germs and cause diseases .
1. The overnight dish is a "harmful dish". If it is poisonous, it will cause cancer?
I believe that many people have heard of similar sayings such as "overnight vegetables can cause cancer". For a long time, whether overnight vegetables can be eaten has been full of controversy.
Usually we think that dishes that have been left overnight are overnight dishes. If the dish is made in the morning but eaten at night, it is not an overnight dish.
In fact, it is unreasonable to define overnight dishes according to whether they are overnight. After a dish is cooked and left for a long time, usually after 8-10 hours, it can be said to be an overnight dish .
Most of the "overnight vegetable poisoning" incidents are related to the nitrite in the overnight vegetable. Can nitrite cause cancer?
Nitrite is mainly divided into two types, one is potassium nitrite and the other is ammonium nitrite. Nitrite is not carcinogenic, but toxic. A large amount of intake in a short period of time can cause death, and chronic poisoning can also occur if a low dose is taken for a long time. The safe limit is 0.07mg/kg per day .
So how much nitrite is in the overnight dish? Where did it come from? First of all, vegetables absorb ammonia in the soil to produce nitrite and nitrate, which are equivalent to the vegetables themselves.
Generally speaking, leafy vegetables have the highest content, followed by rhizomes, melons, onions and garlic, etc., and aquatic vegetables have the lowest content. According to statistics by some scholars, for example, the nitrite content of cabbage is about 1.9mg per kilogram.
Secondly, another source is the metabolism of bacteria and vegetables during storage, which gradually converts nitrate into nitrite.
Did the nitrite content in the overnight dish exceed the standard?
"Chinese Journal of Preventive Medicine" pointed out that the lowest toxic dose of oral nitrates for adults is about 300 mg to 500 mg, and if one to three grams is ingested, it can cause death. However, for overnight vegetables stored in the refrigerator for 24 hours, the sodium nitrite content should not exceed 10mg per kilogram.
If you are really worried, we can look at an experiment. Ningbo Food Inspection and Testing Institute selected 32 raw materials such as vegetables, meat, eggs, etc., and made 30 kinds of home-cooked dishes, and then placed them in disposable fresh-keeping boxes at 4°C and 25°C for 0 hours, Six hours, 12 hours and 24 hours, and finally measure the changes of nitrite and the total number of colonies therein.
It was found that the nitrous acid content in overnight vegetables basically did not change if the storage time was not more than 24 hours below 4°C .
For overnight vegetables at 25°C, the nitrous acid content in meat products does not change much, but the nitrous acid content in leafy vegetables rises significantly after 12 hours, and even reaches more than 100 mg per kilogram after 24 hours. Risk of excessive content.
As for the total number of colonies, the overnight vegetables stored in a refrigerator at 4°C have little microbial growth, and those stored at 25°C have a large number of microorganisms after 6 hours.
It can be seen that the safety of overnight vegetables is inseparable from storage conditions and storage time . Overnight vegetables stored in cold storage have very little nitrite content and microbial proliferation. Therefore, overnight vegetables should be stored at low temperature, and leafy vegetables are best cooked and eaten now.
2. 4 kinds of overnight dishes may have health risks, so throw them away as much as possible
Many people have the experience of eating overnight dishes, and feel that they don’t feel much after eating overnight dishes. At that time, I still want to remind you that it is best to eat less of these four kinds of overnight dishes, as there are potential health risks.
1. Green vegetables
Because the nitrite content of vegetables is often higher, especially leafy vegetables such as Chinese cabbage and spinach. It is recommended to eat green vegetables within four hours after cooking. If you haven’t eaten them that day, don’t eat them anymore. Like spinach and celery, the nitrite content is not low.
2. Tremella mushroom
This type of nitrite tends to have a lot of residues. If it is stored for a long time, it may cause gastrointestinal discomfort after eating.
3. Overnight seafood
Lobster, fish, crab and other seafood will produce protein degradation products overnight, which can damage the liver and kidney. If it is a publication, it is best to pack the raw seafood in a fresh-keeping bag or a fresh-keeping box and store it in the refrigerator.
4. Lo mei
Lo-mei itself is easily affected by hygienic conditions and breeds bacteria. Even if it is placed in the refrigerator, it is easy to breed mold and psychrophilic bacteria. Especially in spring and summer, do not eat it overnight.
In general, most overnight dishes are safe if they are refrigerated in time.
However, since the nutrition and taste will be greatly reduced , it is still recommended to eat as little as possible and cook according to the amount. If you must eat, you should also pay attention to separate storage to avoid cross-contamination, and fully reheat before eating.
3. These foods are the real carcinogens. How to eat to be healthy?
There is indeed a close relationship between cancer and diet. Among the first-level carcinogens released by the World Health Organization, there are many carcinogenic foods, including alcoholic beverages, processed meat products, betel nuts, and Chinese-style salted fish .
There are cancer-causing foods, and there are also anti-cancer foods. You can often find a variety of anti-cancer foods on the Internet.
But no single food can protect you from cancer alone, and healthy eating habits can reduce the risk of certain cancers. How can you eat daily to effectively prevent cancer?
Eat more fruits and vegetables, unprocessed or processed whole grains, nuts and various beans to increase dietary fiber intake.
Less red meat and more white meat. Increase the intake of high-quality protein foods such as fresh beans and low-fat milk, and try to stay away from processed foods such as tribute balls, shrimp paste, and sausages, as well as empty-calorie foods such as cola, milk tea, soda, and potato chips.
Choose low-fat ingredients and low-oil cooking methods, use less high-calorie sauces such as sesame paste and sweet and spicy sauce, and use more natural condiments such as onion, ginger, and garlic, with less oil and less salt.
Overnight dishes are not absolutely inedible, the key is to store them properly and cook them properly. However, due to the problem of nutrient loss, it is recommended to eat less.
references:
[1] "Do overnight vegetables really cause cancer? ". Human Health. 2022-07-11
[2] "These 4 Overnight Vegetables Are Too Dangerous, It's Best To Throw It Out If You Can't Finish It". Popular Science China. 2022-10-24
[3] "Are there really cancer-causing foods?" What to eat to prevent cancer? ". The whole people is true-Tencent News. 2022-06-27
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