Cancer is divided into poor cancer and rich cancer.
A recent study published in Cancer magazine found that there is an important correlation between socio-economic status and cancer types. Rich and poor people are prone to different types of cancer.
For those who are frightened by the news such as "Julie cuts twice every three years" and "Liver cancer can be inherited", please note that this discovery shows that cancer is the result of the interaction between genetic factors and environmental factors in a long process, just like an egg can’t become a chicken without proper temperature, it is mainly environmental factors. Even if you are related to cancer patients, as long as you pay attention to prevention, it is still possible to shut cancer out!
Interview expert: Professor Qin Shukui, vice president of Bayi Hospital and director of the Cancer Center of the whole army.
1 Carcinogenic environment leads to the distinction between "rich cancer" and "poor cancer"
A recent study published in Cancer magazine found that cancer can be divided into "rich cancer" and "poor cancer".
In this study, researchers followed up 3 million cancer cases diagnosed in the United States from 2005 to 2009, covering 42% of the population in the United States and covering the richest and poorest communities in the United States.
The results show that there is an important correlation between socio-economic status and cancer types. Richer people are more likely to suffer from melanoma, thyroid cancer, skin cancer and testicular cancer; The poorer people are more likely to suffer from Kaposi sarcoma, laryngeal cancer, cervical cancer, penile cancer and liver cancer.
Why is this so?
The reason is that the causes of cancer (environment and living habits) are different, and eventually different types of cancer will be produced.
Cancer is the result of the interaction of heredity and environment.
Case: There is a family. The eldest son was admitted to the university and went to other places, and then he stayed to work in other places, while the youngest son stayed with his mother all the time. Later, the mother died of cancer, and then, the youngest son died of cancer.
This case shows that there are genetic defects in cancer families, but "common living environment and way" may play an important role.
Case: Ms. Leah in Britain divorced her husband because of rectal cancer. She believes that her husband likes red meat, drinks and spicy food, and has a bad temper, insists on smoking and is getting obese year by year. This lifestyle will affect her and her children, and she wants to get rid of this living environment.
There is an article in the British Medical Journal detailing "marital diseases", saying that if one of the spouses is sick, the prevalence rate of the other will increase a lot, from cancer, diabetes, hypertension to ischemic heart disease. The reason is that people who live together for a long time have many diseases at the same time because of the same eating habits and similar lifestyles.
Modern genetics shows that cancer depends not only on genetic factors, but also on "being affected by acquired carcinogens and cancer promoters". Breast cancer, lung cancer, liver cancer, esophageal cancer, cervical cancer and colorectal cancer are greatly influenced by bad living habits and environmental factors.
China also has "poor cancer" and "rich cancer"
Case: The 31-year-old "True Water Without Fragrance" (net name) has been feeling intense nausea for more than a month. She usually pays great attention to maintaining her health. She eats miscellaneous grains for breakfast every day, drinks tea and doesn’t touch alcohol and tobacco. She has regular physical examination every year and has never had any major problems. This time, she thought vomiting was a sign of pregnancy, but after a check, the result was: advanced rectal cancer!
"True water has no fragrance" slowly pieced together the clues of his illness: although he sometimes eats miscellaneous grains, he eats a lot of meat, and he rarely exercises. He is 155 cm tall but 128 kg fat. At this time, her mother told her that her grandmother died of esophageal cancer, her grandfather died of lung cancer, and an uncle also had rectal cancer!
Her grandmother’s esophageal cancer belongs to "poor cancer" and her rectal cancer belongs to "rich cancer".
What are the poor and rich cancers in China?
"Poor cancer" also includes liver cancer, stomach cancer, esophageal cancer and cervical cancer. "Cancer-rich" also includes lung cancer, colorectal cancer, breast cancer, lymphoma and prostate cancer.
4 "poor cancer" is related to long-term chronic infection.
Why do liver cancer, gastric cancer, esophageal cancer and cervical cancer belong to "poor cancer"?
A study in the Annals of Oncology shows that some cancers can be caused by long-term chronic infection. In China, hepatitis B virus, Helicobacter pylori, human papillomavirus (HPV) and EB virus are the most common infectious and carcinogenic factors.
Infected with hepatitis B virus, it further evolves into cirrhosis through acute and chronic inflammation, and a small number of patients can eventually lead to liver cancer.
Helicobacter pylori is the most common infectious bacteria, which may cause gastritis and peptic ulcer, and long-term infection may promote gastric cancer.
The bane of cervical cancer and its precancerous lesions has been proved to be human papillomavirus infection.
The high incidence of nasopharyngeal carcinoma is closely related to EB virus infection.
Generally speaking, these cancers related to long-term chronic infection mostly occur in economically underdeveloped areas, where the natural environment is often bad, the nutritional conditions are poor, the hygiene level is low, and the living habits are not good. Therefore, these cancers are easy to develop.
5 "cancer-rich" is related to modern lifestyle.
Why are lung cancer, colorectal cancer, breast cancer, lymphoma and prostate cancer called "rich cancers"?
Rectal cancer with "true water without fragrance" is regarded as a typical "cancer-rich". In terms of pathogenesis, colorectal cancer is influenced by related genes, such as diabetes, hypertension and coronary heart disease. Lifestyle, perennial high-fat diet, lack of dietary fiber intake, sedentary inactivity, untimely defecation or habitual constipation are all common causes.
Why excessive intake of high-fat food is one of the carcinogenic factors?
A new study found that a high-fat diet can change the intestinal microecology (that is, microbial composition)-some bacteria increase, while others decrease. As a result, the immune defense against intestinal cancer is reduced, and the incidence of cancer is increased.
Why sedentary, more susceptible to cancer?
The immune function in human body is enhanced with the increase of activity, and sedentary can make the human body lack enough immune cells.
An epidemiologist in Canada found that in the United States, 49,000 cases of breast cancer and 43,000 cases of colon cancer are associated with inactivity every year, and breast cancer and colon cancer seem to be two cancers closely related to exercise.
Blocking infection can effectively prevent "poor cancer"
6 How to prevent "poor cancer"?
There is no direct causal relationship between infection and cancer, and it will not be "killed in one blow". Viruses and germs lurk quietly in our bodies, waiting for an opportunity to attack. This process takes about 10 years or more. If we can stop their spread and eliminate them in the cradle, we can effectively prevent the occurrence of cancer.
First, get vaccinated. According to statistics, 95% of infants and children in a certain area were injected with hepatitis B vaccine in 1984. Twenty years later, the number of hepatitis B carriers dropped from 10% to 20% to 0.2%, and the incidence of liver cancer decreased by 70% to 80%.
Second, early treatment. Helicobacter pylori can be completely eradicated by antibiotic combined therapy, which can not only relieve gastritis and gastric ulcer, but also play a good role in resisting the further development of gastric cancer.
Third, do screening. Women over the age of 30 must have regular cervical screening. At the same time, protect yourself, pay attention to using condoms, don’t have sex too early and limit the number of partners.
Finally, the dining system. Helicobacter pylori and other germs are highly contagious, and can be transmitted through hands, food and tableware. It is also best to implement a separate meal system in family life.
Healthy lifestyle can prevent "cancer-rich"
7 How to prevent "cancer-rich"?
"Cancer-rich", such as colorectal cancer, breast cancer and lymphoma, has no unique and significant inducement, and some people think it is difficult to prevent it.
However, this kind of rich disease also has some common causes-eating too much, eating a high-fat and high-protein diet, and lack of exercise.
Therefore, the way to prevent it is to establish a healthy lifestyle. Compared with the "poor cancer" caused by chronic infection, it is more difficult to do and requires greater determination and perseverance! (Li Lanling)