In recent years, people pay more attention to nature and want to eat some pure natural food, so they go to the fields to find some wild vegetables, and Houttuynia cordata has become a wild vegetable on the public table.
Houttuynia cordata, also known as broken ear roots and pig nostrils, generally grows in ditches, streams and wet Woods. Houttuynia cordata Thunb, as a medicine, has the functions of clearing away heat and toxic materials, eliminating carbuncle and expelling pus, and inducing diuresis and treating stranguria.
According to "Science-Translational Medicine" published on 20 17, nearly 80% of liver cancer is closely related to aristolochic acid, and Houttuynia cordata contains aristolochic acid. As soon as I heard that it is easy to get liver cancer, many people stopped eating Houttuynia cordata Thunb., Others said that eating Houttuynia cordata Thunb can also lead to nephrotoxicity.
Aristolochic acid is extracted from Aristolochia plants, which are widely used in traditional Chinese medicine. Aristolochic acid was listed as a carcinogen in 2008, and its nephrotoxicity is also obvious. Long-term intake of aristolochic acid may lead to renal cancer.
The binding force between aristolochic acid molecule and DNA molecule is very strong. Every aristolochic acid molecule you eat will be permanently combined with DNA, which will continue to cause harm and cause genetic mutation.
Studies have shown that aristolochic acid has a certain correlation with the pathogenesis of liver cancer.
However, aristolochic acid metabolite aristolochic lactam I has nephrotoxicity.
Therefore, the carcinogenicity of aristolochic acid is beyond doubt.
In China, drugs containing aristolochic acid have been basically controlled or banned, and ordinary people generally can't buy them, including aristolochic acid and Aristolochia manshuriensis.
However, there is a rumor about Houttuynia cordata Thunb. Houttuynia cordata Thunb is not aristolochic acid, but aristolochic lactam, a metabolite of aristolochic acid. These two substances are different and cannot be confused.
Moreover, only aristolochic lactam -Bll, All and Fll were detected in Houttuynia cordata Thunb, and the content was very low.
At present, there is no clinical data showing that these substances can cause cancer, and aristolochic acid does cause cancer, but there is no such chemical component in Houttuynia cordata Thunb.
Speaking of carcinogenicity, in fact, many things may contain carcinogens. For example, alcohol can cure liver cancer, dust can cause lung cancer, and ultraviolet rays from the sun can cause skin cancer. But it is not rigorous to talk about toxicity without dose.
It is also unscientific to talk about toxicity without benefits. As long as you don't eat too much, there is no need to worry about cancer.
At present, there is no evidence to prove that Houttuynia cordata Thunb is carcinogenic, and even some studies show that Houttuynia cordata Thunb has a certain anti-cancer effect. Houttuynia cordata Thunb has a certain inhibitory effect on transplanted tumors in mice, and the division index of cancer cells decreases.
Cancer really scares many people, but everyone should learn to judge correctly and not blindly follow suit. There are many factors that induce cancer. Besides their age, they also have their own diet and living habits. If you want to stay away from cancer, you'd better start with your own diet.