What are the most carcinogenic foods? I think many people are not very clear about this. Although people are paying more and more attention to health now, there are still some misconceptions about certain issues. Therefore, I will do my best to help you and hope to provide you with what you need.
1. Pickled Foods:
Foods such as salted fish, cured meat, and ham can produce dimethylnitrosamine during the pickling process, which is converted into a carcinogen in the body. Excessive consumption of these foods increases the risk of cancer in the digestive tract, including the stomach, intestines, and pancreas. Therefore, from this perspective, pickled products have a certain carcinogenicity.
2. Barbecued Foods:
Various barbecued meats, if improperly marinated beforehand, can easily produce excessive nitrites. Burnt meat and fish skins contain strong carcinogens such as benzopyrene. When consumed on an empty stomach, these substances come into direct contact with the gastric mucosa, increasing the risk of stomach cancer by about twenty times compared to the average population. It is recommended not to eat barbecue on an empty stomach, not to eat it too frequently, and to avoid burnt meat and skin.
A considerable number of carcinogens are also mixed in the smoke from barbecuing. The harm caused by the smoke from barbecue, which is full of toxic gases, should also be taken very seriously.
As important as carcinogens is the issue of parasites in the skewers themselves. Livestock often have a parasite called Trichinella spiralis. Like cysticercus in pork, Trichinella spiralis can cause disability. Sheep and cattle both have Trichinella spiralis, and the amount in sheep is relatively high among livestock.
3. Smoked Foods:
Smoked foods such as smoked meat, smoked liver, smoked fish, smoked eggs, and smoked tofu curd contain the carcinogen benzopyrene. Regular consumption can easily lead to esophageal and stomach cancer. Although smoked foods are fragrant and have strong preservative properties, their carcinogenic risk is also high. This characteristic is caused by the smoky gases produced from闷烧 (smoldering) wood chips during production. These gases contain the carcinogen benzopyrene, and the amount of carcinogens in smoked meat products is greater than in smoked and baked starch-based foods. Therefore, we should eat less of smoked and baked products and be cautious, especially not to consume them as daily food for years on end.
4. Fried Foods:
You absolutely don't know that the harm of fried food is absolutely devastating. When food is fried until charred, it produces carcinogenic polycyclic aromatic hydrocarbons. For example, when coffee is burnt, benzopyrene increases 20-fold. Fried cakes, stinky tofu, fried taro chips, youtiao (fried dough sticks), etc., because the oil is often reused many times, carcinogens are produced at high temperatures.
Research has found that people who frequently eat fried foods not only suffer damage to internal organs, but long-term consumption also poses a cancer risk. Not only that, frequent consumption of such foods can also lead to a large number of parasites multiplying, thus harming various organs.
5. Moldy Substances:
Foods such as rice, wheat, beans, corn, and peanuts are prone to moisture and mold. After being contaminated by mold, they produce a carcinogenic mycotoxin—aflatoxin.
Aflatoxin is 68 times more toxic than arsenic and 10 times more toxic than the highly toxic potassium cyanide. It is the most potent chemical carcinogen currently known, with a carcinogenic capacity 10,000 times greater than that of "BHC" (benzene hexachloride).
It tends to grow on peanuts, corn, and nuts. It is not soluble in water but is extremely heat-resistant, and it is difficult to remove by general washing or cooking. Now, some companies polish, clean, oil, and wax old rice to make it look good, so you can't tell it's old rice, but aflatoxin remains in it.
However, chronic poisoning from aflatoxin is cumulative. If you only occasionally eat something moldy, the toxin can be excreted from the body after a period of time. Scientific research has shown that chlorophyll can significantly reduce the absorption rate of aflatoxin.
6. Leftover Cooked Cabbage and Sauerkraut:
These can produce nitrites, which are converted into the carcinogenic nitrosamine in the body.
Because some vegetables contain a high amount of nitrates, if they are left for too long after cooking, the nitrates will be reduced to nitrites by the action of bacteria, which are carcinogenic and cannot be removed by heating.
Those who love sauerkraut know that there is often a layer of white mold in the sauerkraut crock. In this white mold, a type of Geotrichum mold can be isolated. Related studies have found that this mold has a carcinogenic effect on the esophagus. Although acid inhibits the growth of miscellaneous bacteria and prevents vegetables from rotting, if hygiene is not paid attention to during production, some miscellaneous bacteria may be mixed in. Under the action of these bacteria, nitrates in the vegetables can be reduced to nitrites. A large intake of nitrites by the human body can easily cause cancer.
7. Betel Nut:
Chewing betel nut is not a healthy habit, and it is a factor that causes oral cancer.
In fact, as popular as betel nut is, it was classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC) as early as 2004. Many studies have shown that frequent chewing of betel nut significantly increases the possibility of oral mucosal lesions and raises the incidence of oral cancer.
So, why does betel nut cause oral cancer? The reasons are:
Physical Injury: When chewing betel nut, the friction from the betel nut fibers can cause local trauma and mucosal damage to the oral mucosa. Long-term chewing leads to unhealed injuries, forming local chronic damage, which in turn causes chronic inflammation, enhanced oxidative stress, and cell proliferation. Studies have shown that the frequency of oral mucosal cell shedding is significantly increased in betel nut chewers.
Biological Toxicity: Betel nut contains a large amount of polyphenols and various alkaloids, among which arecoline is the main component, accounting for about 1% of the net weight of dried betel nut. Arecoline can significantly promote the apoptosis of epithelial cells and interfere with the deposition and degradation process of extracellular matrix macromolecules (such as collagen, elastin, etc.). In addition, the inflorescence and lime chewed with betel nut also have a certain genotoxicity, mainly due to the combined effect of the nitrosamines, eugenol polyphenols, and active oxidizers they contain.
8. Re-boiled Water:
Re-boiled water contains nitrites, which are converted into the carcinogenic nitrosamine in the human body. It has been listed by the Shanghai Municipal Center for Disease Control and Prevention as one of the 10 carcinogenic foods.
Because the longer the water is boiled, the non-volatile harmful substances and nitrites in the water will become concentrated due to water evaporation, and their relative content will increase. Drinking such water is also harmful to the body.
Similarly, when making soup, it doesn't need to be simmered for too long, nor does it need to be too thick. Simmering soup for a long time makes it more fragrant, but it also increases the chance of various ingredients reacting, which may produce harmful substances. Other unfavorable ingredients are also easily concentrated due to the reduction in soup volume. Therefore, the simmering time for soup is generally about two hours.