Vegetables are recognized as green and healthy foods
However, on the web
But there are often a lot of them
Claims circulating that vegetables cause cancer
These 3 vegetables
Already on the "carcinogenic list"?
Is bracken classified as a carcinogen?
The World Health Organization's International Agency for Research on Cancer (IARC) classifies bracken as a Group 2B carcinogen and protofern glycosides in bracken as a Group 3 carcinogen.
Truth: Not accurate!
● Group 2B carcinogens: There is insufficient evidence that the substance is carcinogenic to humans, but there is sufficient evidence that the substance is carcinogenic to animals.
● Group 3 carcinogens: There is insufficient evidence that this substance is carcinogenic to humans and animals.
In addition, bracken is blanched, and the harmful substance protofern in it will be destroyed.
Bracken can cause cancer is based on mouse experiments, and the mice in the experiment have a lifespan of 7 months, converted, people have to eat bracken for 20~30 years to produce a higher risk of carcinogenicity, which is obviously difficult to do, of course, we do pay attention to the amount of consumption.
Source: Picture Worm Creative
折耳根（鱼腥草）会导致癌症？
Aristolochic acid, classified as a Group 1 carcinogen by the International Agency for Research on Cancer, is harmful to the kidneys. It is a special ingredient contained in Aristolochia plants. Houttuynia cordata is also said to contain aristolochic acid, can eating it also cause cancer?
Truth: It's okay!
In fact, Houttuynia cordata does not belong to the Aristolochia genus, and the ingredient that confirmed the "toxic" and carcinogenic properties of aristolochic acid is Aristolochic acid I., while Houttuynia cordata contains aristolochic lactam II., which are two different substances.
At present, there are no reports on the carcinogenicity of Aristolochia lactam II., so in terms of the substances it contains, Houttuynia cordata does not contain real carcinogens. However, Houttuynia cordata is still a medicine after all, and those who like to eat it should also pay proper attention and not consume it in large quantities for a long time.
Source: Picture Worm Creative
Can fungus induce skin cancer?
Fresh fungus contains a light-sensitive substance - porphyrin, which can cause skin itching, inflammation, edema, and severe skin necrosis and even induce skin cancer after being exposed to the sun.
Truth: It's a rumor!
Not only fresh fungus, but also many common foods contain "photosensitive substances", such as celery, which is a well-known photosensitive vegetable, but this does not affect our normal consumption in life. Hemoglobin and chlorophyll actually contain porphyrins, which is not unusual. When the fresh fungus is turned into dry fungus after being exposed to the sun, most of the porphyrins will be decomposed during the exposure process, and the safety will be higher.
According to the current basis, the direct cause of porphyria is too many porphyrins in the skin, and genetic factors lead to the inability of porphyrins in the body to metabolize normally, and there is no direct connection with food, so everyone can eat it with confidence.
Source: Picture Worm Creative
These 4 "dishes"
It is really possible to cause cancer!
01
Pickled dishes
In 2023, a team from Zhejiang University School of Medicine published a study on the dangers of pickles in the journal BMC Medicine, pointing out that people who ate pickles four or more days a week had a 13% higher risk of death from digestive tract cancer and a 45% higher risk of death from esophageal cancer.
Health Tips:
People suffering from stomach problems are advised to eat less pickled foods. Pickled foods contain a lot of nitrite, which will irritate the gastric mucosa after long-term consumption, making it dysfunctional, congested, edema, erosion, and increasing the chance of gastric mucosal cancer. In addition, people with high blood pressure, diabetes, and kidney impairment should also try to eat less pickled food.
02
Leftovers overnight
In order to save food, many people often put the meals they can't eat in the refrigerator, and continue to eat the second and third meals. Long-term consumption of overnight vegetables and moldy foods is easy to ingest too much nitrite and induce digestive tract cancer.
Health Tips:
If you eat leftovers occasionally, it is not a big problem, but if you are reluctant to throw away leftovers for a long time, and you have the habit of eating leftovers frequently, it will definitely increase the risk of cancer.
Source: Picture Worm Creative
03
Dishes that are too hot
Chinese prefer hot food, and have the habit of "drinking hot" and "eating hot" everything.
Long-term consumption of excessively hot food or beverages may frequently burn the mucosa of the mouth and esophagus, which will cause a chronic inflammatory response of the esophageal mucosa, thereby increasing the risk of esophageal cancer.
Health Tips:
In daily life, do not eat hot food, and try to control the temperature below 65 °C, otherwise the mucous membrane of the esophagus will be burned.
04
The oil smoked out of the fried dish
Many people like to wait until the oil is hot and smoky before putting the vegetables, but this practice often produces more oil smoke when stir-frying, and it will also produce more harmful substances and carcinogens.
Health Tips:
Generally, the smoke point of cooking oil does not exceed 180°C, if the oil pan smokes, it means that the temperature is too high. Therefore, it is recommended that it is safer to stir-fry vegetables in a hot pan with cold oil.
In particular, starchy foods are prone to acrylamide when exposed to high temperatures, which belongs to class 2A carcinogens. Therefore, it is also necessary to pay attention when cooking root vegetables.
Source: Picture Worm Creative
Article transferred from: Run Run Shaw Hospital
Article source: Health Times, Popular Science China