in real life always has a lot of accidents, such as accidentally fried too many dishes, poor appetite, left a lot of food, so in the habit of prompting, we clean up and wait for the next meal to eat. But when someone tells you: “reheating food has a cancer risk”, how do you feel? Is that true?!

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rice, as the staple food on the Chinese dining table, has a very high probability of being eaten by second heating. Therefore, the news on the Internet that the rice is reheated will cause cancer is rampant. Is this statement reliable?

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in fact, once any food is placed for 5 to 8 hours and turns into an overnight meal, bacteria will breed in rice, with the exception of rice. Unexpected bacteria will produce toxins, which will reduce the safety and quality of rice. Rice itself does not have cancer risk, even if it is reheated, it will not produce carcinogenic factors. However, if the overnight rice is placed too long, the toxin produced by bacteria after food deterioration will increase the risk of disease to a certain extent. Therefore, people who eat twice heated rice for a long time in life need to pay extra attention to improve their diet status in time.

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2? Compared with rice,

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, the statement that secondary heating of vegetables will cause cancer is more scientific, because most vegetables contain nitrate. After cooking and under the action of bacteria, nitrate in vegetables will be transformed into a special substance, namely nitrite, which is also a typical carcinogen.

however, some people are curious. Let alone rice, vegetables have been eaten for decades, and Chinese people have been eating them for thousands of years. How can they be ok? That’s because the nitrite in the leftovers is very small, and the content is not enough to cause cancer. In medicine, especially the standard of the dosage of carcinogenic factors is very important. It is not scientific to talk about toxicity (effect) without dose, and the same is true for nitrite.

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many people think that secondary heating can achieve the effect of sterilization and disinfection, but in fact, there will be a certain risk of eating leftovers for a long time. First, the nutrient content of food will be lost; second, the content of nitrite will be more than that in fresh food.

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3. Three kinds of food should not be reheated

leftovers are easy to increase the possibility of bacteria breeding. If it is not properly preserved, it will even mildew, and many substances produced by bacteria are harmful to human organs. In the long run, the risk of disease will gradually increase, and the nitrite in vegetables, not to mention, has been taken seriously by many health people. Most dishes of

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can be eaten overnight occasionally, but the following three foods are not recommended to be reheated.

● seafood

seafood not only has a strong fishy smell, but also is a very perishable food material. For example, fish, shrimp and crab that people often eat are “paradise” for bacteria after the next night. The second heating will only make the dishes contain more bacteria. As is known to all, soybean products are of high nutritional value. Once turned into overnight food, they are simply hotbeds of bacteria. Therefore, if the time is too long, they can not be reheated.

● vegetables

has a saying called “prefer meat dishes to vegetables”. Once the nitrite content in leftovers reaches the standard, it will do great harm to human body, but meat dishes are much safer. Therefore, try to eat vegetables first and then meat dishes, and try to reduce the chance of heating vegetables twice.

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● scientific storage of

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leftovers also has some small skills. When storing leftovers, pay attention to distinguish between frozen and refrigerated food, and control the approximate temperature range to avoid food deterioration and bacterial breeding.

● temperature control

not only keep the temperature of food, but also the temperature of secondary heating is very important. Generally, the temperature of secondary heating is the best between 65 and 70 ℃, too high or too low will bring the risk of disease.

● prohibition of repeated heating

although modern people’s health awareness has improved a lot, but it is absolutely forbidden to repeatedly heat food. The second heating is to eliminate the bacteria in leftovers. If the food is repeatedly heated, it will increase the possibility of food deterioration, and the gain is not worth the loss. The leftovers of

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also contain so much knowledge. After reading them carefully, I believe that everyone will get something. In the future, we should save leftovers scientifically! As long as you eat the leftovers well, germs and cancer will stay away from you.

reference:

[1] Ze Yu, how long does the meal last is an overnight dish? Is it edible? I hope you understand these secrets, guangming.com, May 27, 2020

[2] Qianfan, what about summer leftovers? Once at most! The temperature must reach 65 ℃), global network, July 12, 2016,

[3] Wang Silu, can the second heating of rice cause cancer? These 4 foods must not be heated two times, far away from hospitals. “Guangming”, 2018.12.31

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