In daily life, vegetables are one of the indispensable delicacies. They are rich in nutrients, so they are loved by people.

However, recently, Aunt Chen read an article claiming that several vegetables were included in the list of carcinogens, which may increase the risk of carcinogenesis if ingested too much, which made her worry.

After all, the vegetables mentioned in this article include tomatoes, baby vegetables and cucumbers, which we usually eat. But do we really need to worry that these vegetables will cause cancer?

5 kinds of vegetables that are often eaten are poisonous and can cause cancer?

1. bracken

In recent years, there are more and more claims about bracken causing cancer, which has aroused people’s concern about whether bracken will cause cancer.

In fact, the carcinogenicity of Pteridium aquilinum comes from the carcinogens contained in it, especially protopterin, which is a carcinogen with genetic toxicity, and the human body will produce highly carcinogenic dienone compounds after ingesting it.

However, we don’t need to panic too much. Because to reach the level of carcinogenicity, a person needs to eat bracken continuously for at least 20 years, and the daily intake should reach 350 grams to 3.5 kilograms, which may lead to carcinogenesis.

In addition, despite the carcinogenic risk of protopterin, the evidence of its carcinogenicity in practical experiments is not sufficient, and its carcinogenicity is far lower than that of pickled foods that people are more likely to come into contact with in daily life, such as bacon and pickles. In addition, protopterin is easily soluble in hot water, so as long as the bracken is blanched, the harmful substances in it will be destroyed.

Therefore, although protopterin in Pteridium aquilinum has a certain cancer risk, the risk can be controlled as long as it is eaten in moderation and properly cooked.

In our daily diet, maintaining diversified and balanced eating habits is a more important factor to reduce the risk of cancer.

2. Baby dishes

The argument that doll dishes contain formaldehyde actually comes from the fact that some unscrupulous merchants dip formaldehyde in their roots in order to keep the freshness of doll dishes, which leads to the rumor that eating doll dishes will be poisoned. In fact, formaldehyde is soluble in water and volatile.

Even if formaldehyde is contained in vegetables, it will be dissolved in water or volatilized during storage and sales. To achieve the toxic dose, a person needs to take a large amount for a long time, and it is possible to produce toxic effects every day.

3. Immature tomatoes

Immature tomatoes produce a substance called alkaloid. Intake of 0.2-0.4 grams of alkaloids may cause food poisoning, leading to diarrhea, nausea and even organ failure.

However, it is worth noting that this substance is rarely detected in mature tomatoes, so as long as you eat mature tomatoes, there will be no problem.

4. Houttuynia cordata Thunb

Whether Houttuynia cordata Thunb can cause cancer is mainly because it contains a carcinogen called aristolochic acid.

However, the follow-up study confirmed that the total content of aristolochic lactam in Houttuynia cordata Thunb is 0.016 g/kg, which is very low and does not belong to the carcinogenic category. In addition, it is not accurate to talk about toxicity only from the perspective of dose.

5. Cucumber with flowers on the top

The top flower of cucumber is generally influenced by plant growth regulator, which is a kind of plant hormone that can be safely eaten. It is mainly used to prevent cucumber from falling off when it bears fruit. Generally, it will be directly applied to the fruit handle of cucumber. If it touches flowers by mistake, it will lead to flowers on the top of cucumber.

The actual concentration of this hormone is very low and the dosage is very small. The human body can decompose metabolism after ingestion, and it will not cause harm to health.

Remember to blanch 3 kinds of vegetables before eating.

Although many vegetables pose no threat to human health, if they contain the following three kinds of ingredients, they will bring their own "toxins", so they must be blanched before eating.

1. Containing oxalic acid: Vegetables such as spinach, pods and purslane contain oxalic acid. Excessive intake of oxalic acid will crystallize with minerals such as calcium and iron in the body, and there is a risk of stones.

2. Contains plant agglutinin: Generally, legumes and vegetables are high in content, which will affect the absorption and digestion of nutrients in the small intestine after being ingested by the human body. When the body accumulates too much of this substance, it may also cause poisoning events such as nausea, vomiting and diarrhea.

3. Contains colchicine: Like fresh daylily, it contains colchicine. The substance will be oxidized into toxic colchicine after entering the human body, which may cause discomfort symptoms such as nausea and diarrhea when accumulated in large quantities in the body, and may affect normal urine excretion in severe cases.

If you want to prevent cancer, it is these five foods that you really need to eat less.

In fact, natural vegetables have almost no cancer risk. If we want to prevent cancer, we should really eat less of the following five foods.

Step 1 process meat

Nitrite itself is not carcinogenic, but when it reacts with protein and is converted into nitrosamine, nitrosamine becomes a carcinogen. Intake of nitrosamines will increase the risk of cancer.

Generally speaking, intake of 0.3~0.5 grams of nitrite will lead to poisoning, while 3 grams may lead to death. Salted food and processed meat may contain nitrosamines, so the intake should be minimized to avoid harm to the body and increase the risk of cancer.

2. Alcohol

Have you ever wondered why drinking alcohol can cause blushing? This is actually the influence of acetaldehyde, which can also be called "acetaldehyde poisoning". Studies have shown that the mutation of acetaldehyde dehydrogenase 2 gene is also one of the factors that induce esophageal cancer.

3. Betel nut

Long-term consumption of betel nut will cause damage to oral mucosa and teeth, and the alkaloids contained in it will also have certain toxicity to human body. At present, betel nut has been classified as a first-class carcinogen.

In addition to the above foods, there are many similar foods that may cause cancer in our daily life. Long-term intake of these foods will also increase the risk of cancer, so no matter how tempting the food is, we should enjoy it in moderation.

4. Chinese salted fish

Chinese salted fish is similar to processed meat products and contains a lot of nitrite. This is the product caused by high salt, exposure and dehydration in the curing process of salted fish. After being ingested by human body, ammonium nitrite, a strong carcinogen, will be produced under the action of gastric acid.

5. moldy food

Mildew food contains a carcinogen, namely aflatoxin. Aflatoxin is 68 times as toxic as arsenic, even if ingested in a small amount, it is harmful!

It can not only cause liver cancer, but also induce bone cancer, rectal cancer, breast cancer and ovarian cancer. In daily life, moldy leftovers, rice, corn, peanuts and locally pressed edible oil are important sources of aflatoxin.

Original title: "Five kinds of vegetables have been included in the" carcinogenic list ".Will eating too much cause cancer? These things really need to be eaten less. "

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