Bracken or carcinogenic eat as a good "natural" health and safety

Recently, a famous non-governmental scientific organization, the Scientific Squirrel, published an article on carcinogenicity of pure natural wild herbs on the Internet. Dr. Yun of Food Engineering unwillingly pointed out in his article that the bracken is not legendary “safe”. "No pollution" and "anti-cancer" effect, but has a clear carcinogenic ability. This article was immediately reprinted by many websites and forums, and it caused great repercussions among netizens. Some netizens have questioned whether natural foods can cause cancer. Is this statement credible? How can natural foods really eat healthy?

Bracken actually caused cancer?

Inadvertent Dr. Cloud read the data and discovered that more than one hundred years ago, people noticed that this plant can cause cow poisoning. A large number of cattle that eat fern (fiddlehead is its bud), the fastest will die in a few weeks. When you don't eat so much, your bone marrow function gradually loses, resulting in symptoms such as lack of white blood cells, thrombocytopenia, and acute bleeding. Sheep who eat fern will gradually lose their eyesight.

It was not until the early 1980s that a Japanese scientist successfully separated something called ptaquiloside. The translation of Chinese seems to be more reasonable than the original pteridin. Since then, many people have conducted many tests on this material and found that using it to feed animals can present the aforementioned symptoms. Biochemical experiments have found that it can also react with amino acids and can also destroy genetic material DNA. That is to say, its toxicity is stronger than expected. Worst of all, it can be transferred from the cow's food to milk and can also be dispersed into water and soil. If a cow eats fern, the calf will have symptoms of fern poisoning even if it only eats milk. This may also explain the fact that people in fern-growing regions, even if they do not eat bracken, have a much higher risk of developing cancers such as esophageal cancer.

Scientific experiments have found that the original phylloside is present in all parts of the fern, and the fern, which is eaten by humans, has a higher content in the young part of the fern! However, what makes people feel slightly relieved is that the fresh bracken is bitter and astringent. In addition to the individual pursuit of “original” and “natural” people, people generally treat the fresh bracken with plant ash or alkali water. This treatment will greatly reduce the original phoenicin content. Milk, in general, has to be sterilized at high temperatures, which will also greatly reduce the toxicity of primordrin. However, such treatment is only reduced, not eliminated. For humans, eating some treated bracken will not break the bone marrow like cattle, or be blind like a sheep. However, chronic poisoning, such as cancer, will not appear?

Dr. Yun Wuxin pointed out in the article that, in general, the conclusion that the “carcinogenicity of bracken” is supported by quite solid scientific evidence. "If a synthetic material or processed food has such a deterrent - especially cancer-causing ability, it will surely be verbally cut and pulled out. However, the bracken is an 'old ancient natural green food', so people Tolerance to it can be tolerant."

Bracken carcinogenic past records

The reporter searched the web for “carcinogenicity of bracken” and found that nutritionists had previously appealed to him that bracken must not be eaten raw. Because fresh bracken contains carcinogens, this carcinogen will be decomposed automatically at high temperatures of 70°C. And more is the Chinese medicine for the identification of fern efficacy: can heat and slide, reduce gas and phlegm, diuretic and tranquilizing.

So, is the fern really a carcinogenic wild vegetable? Chen Leiji, director of pharmacy department of Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, said that this formulation is not new. As early as in the "Journal of Guiyang Medical College" in the 03th issue of 1994, there was a pharmacological study on "carnation of bracken".

Several experts, such as Huang Nenghui of the Institute of Pharmacology of Guiyang Medical College who conducted the study, pointed out in the “Experimental Study on Fern-induced Carcinogenesis” that rats were fed with fresh sweet fern and bitter fern, treated with sweet fern and bitter fern powder for 7 months. After that, six (33.5%), three (18.75%), two (12.5%), and one (6.25%) animals in each of the four groups of animals developed intestinal adenomas; at the same time, fresh sweet ferns and treated bitter ferns In each group, 1 animal had a breast tumor. In addition, mice inoculated with Ehrlich ascites solid tumor 4 groups were orally fed with the above-mentioned four kinds of fern homogenates for 10 days. The results showed that after taking the tumor mass increased, the weight gain rates were 30.27%, 11.01%, and 4.59, respectively. % and 1.83% indicate that bracken has a role in cancer induction and tumor growth.

However, at the same time, Director Chen Leiyun also stated that there have been few clinical reports of cancer caused by eating bracken.

"Natural" health and safety

Professor Guo Haiying, a nutrition and diet expert at Nanjing University of Traditional Chinese Medicine, said that even some “natural” foods may be toxic and harmful. Due to the widespread use of pesticides, fertilizers, and other industrial wastes produced by factories that do not pay attention to environmental protection, natural environments such as air and water have been contaminated in some areas, and plants that naturally grow in contaminated environments can be called “natural”. , but it is difficult to keep it pure and safe. "Natural" does not equate to "healthy" or "safe." For example, wild vegetables grown in order to adapt to the harsh environment in the wild, in the long-term growth and reproduction process, will produce some toxic substances to resist external invasion. In addition, some wild vegetables have a strong adsorption capacity for certain toxins, such as nitrite. If wild herbs contain more toxic substances, they will cause harm to human health, and serious deaths can result.

The toxicity of food can not be judged by whether it is "natural" or even purely natural food. The foods we purchase through formal channels are generally relatively healthy and safe foods. We don't have to over-pursue “natural” foods.

How to eat wild vegetables more healthy

Inadvertent Doctor Yun also wrote in the text that fern is the first, perhaps the only cancer plant found to date that can cause cancer. Nutrition experts in Nanjing also pointed out that most of the wild vegetables are still safe. Wang Chengsheng, deputy chief physician of the Nanjing Natural Medical Association reminded readers that it is necessary to understand the characteristics of wild herbs before they can be eaten. Wang Chengsheng, deputy director of the doctor to introduce the following three kinds of common wild herbs to eat, we may wish to refer to January 2.

"Three high" (hypertension, hyperlipidemia, hyperglycemia) people eat purslane. The purslane is rich in omega-3 fatty acids, which can inhibit the production of cholesterol and glyceride in the body and reduce the occurrence of cardiovascular disease. The purslane also contains high potassium, which can effectively protect the blood vessels from being invaded.

The middle-aged and the elderly and the “three-high” people may wish to eat more purslane. Need to remind everyone that, where the spleen and stomach are weak, people with diarrhea and loose stools should not eat; pregnant women, especially pregnant women with habitual miscarriage should not eat, because the purslane is cold and slippery, eating too much, there is sliding profit Cons. According to the experience of the old people, purslane jealousy and turtles with the same food, otherwise it will gastrointestinal stomach indigestion, food poisoning and so on.

Qingrejiedu eat amaranth. The leeks are also called Houttuynia, lateral roots, and pig nostrils. Its slightly cold, spicy, with Qingrejiedu, pus, diuretic, anti-inflammatory, phlegm and cough effect, for the lungs, sputum, pus, blood, sores, swollen boils, hot shower, urine astringent pain have a certain degree of embolism Health effects.

Office family eat more leeks. Leek contains a lot of carotene, B vitamins and vitamin C, calcium, iron content is also high, with heat to stop bleeding, Liver eyesight, diuretic swelling effect. In common vegetables in the spring, spinach, bamboo shoots and so on all contain certain oxalic acid. The content of oxalic acid in leeks is relatively low, so calcium, iron and other substances in leeks are also more easily absorbed by the body. Office workers are prone to dry eyes, leek is rich in carotene, eating leeks can prevent dry eye, but also reduce dry eye discomfort.

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