Precautions for preventing cancer
Eat less sugar.
The favorite "food" of cancer cells is sugar.
Japan's book How to Prevent Cancer points out that when blood flows through a tumor, about 57% of its blood sugar will be consumed by cancer cells and become a nutrient to nourish it.
According to the American Journal of Clinical Nutrition, as long as you drink two sweet drinks a day, the risk of pancreatic cancer is 90% higher than that of people who don't drink.
Hao, director of the Department of Pancreatic Oncology of the Cancer Hospital affiliated to Tianjin Medical University and a member of the American Cancer Fund Research Association, said that it is best to eat less or no sugary food. It is generally believed that the sugar intake per person per day should be less than 50 grams.
Have a glass of red wine with meat.
Grape skins used to brew red wine contain a substance called resveratrol, which has a certain preventive effect on digestive tract cancer.
In addition, the intake of red meat such as pork, beef and mutton recommended by the American Association for Cancer Research is about 500 grams per week. Eating too much will increase the risk of colon cancer.
However, a recent study found that if you drink a glass of red wine while eating meat, the polyphenols in it can prevent the meat from decomposing into harmful substances in your stomach.
Open the window for at least half an hour.
Few people know that in addition to formaldehyde, there is also a strong carcinogenic gas-radon and its daughters. It is usually hidden in granite, cement and ceramic tiles. It spreads indoors along the gaps in these places and enters the human body through the respiratory tract. After a long time, it will induce lung cancer.
In fact, as long as the window is opened for half an hour every day, the concentration of radon can be reduced to the same as that outside. In addition, natural gas will also produce radon after burning, so when boiling water in the kitchen, it is best to open the window and close the door connected to the living room.
Wipe your back with a dry towel.
In Japan, there is a craze to wipe your back with dry towels. Professor Mizuno, vice president of the University of Tokyo, pointed out that this can play a role in preventing cancer, because friction and heating will activate a cell in the subcutaneous muscle tissue of the back, which can devour and destroy cancer cells.
For middle-aged and elderly people, rubbing, rubbing or scratching their backs is a good health care method. Or use both ends of a dry towel to repeatedly rub the whole back in a straight or horizontal way for about 10 minutes until the skin is red and hot.
Bring onions and garlic to dinner.
In China, the province with the lowest incidence of gastric cancer is Shandong, a big onion and garlic planting province. Cangshan County, Shandong Province is the first of the four counties with the lowest mortality rate of gastric cancer in the north of the Yangtze River, with an average of 6 kilograms of garlic per person per year.
Wang Xingguo pointed out that this is related to the antioxidant effect of allicin, which can reduce the content of carcinogen nitrite in human body.
Studies have shown that people who eat more garlic will reduce the risk of gastric cancer by 60%. Garlic can only be produced when it is crushed and fully combined with oxygen, and it is very unstable and will soon lose its effect once heated. So it's best to crush garlic and eat it raw, or chop it into garlic paste and put it in the cold salad.
Drinking soybean milk can prevent "female cancer"
The American Association for Cancer Research points out that women who regularly drink soy milk have a much lower risk of breast cancer. According to Wang Xingguo, Deputy Secretary-General of Dalian Nutrition Society and Director of Nutrition Department of Dalian Central Hospital, this is because there is a substance in soybean milk that is very similar to estrogen, called "soybean isoflavone", which can play the role of confusing the fake with the real, and its mechanism is very similar to that of anticancer drugs. It can prevent all estrogen-related cancers, such as breast cancer, endometrial cancer, cervical cancer and prostate cancer.
However, Wang Xingguo warned that people who already have these cancers had better not drink soy milk, so as not to stimulate cancer cells. In addition, people suffering from peptic ulcer, gastritis and gout should also drink less.
In addition, it is best to drink your own ground soybean milk. Many products sold on the street are made of soybean milk powder, and the content of soybean isoflavones is very low.
Walk every day 1 hour.
The American magazine Reader's Digest once told everyone that walking for 30 minutes after meals every day or walking for 4 hours every week can reduce the risk of pancreatic cancer by half. A long-term study of 70,000 people by Harvard School of Public Health also found that walking 1 hour every day can reduce the risk of colorectal cancer by half.
Sun Cun, member of the Chinese People's Political Consultative Conference and deputy director of the Institute of Cancer Research of Tianjin Medical University, explained that this is because pancreatic cancer is related to excessive body heat. Walking can consume calories and can directly prevent pancreatic cancer.
In addition, sweating after exercise can cause carcinogens such as lead and strontium in the body to be excreted with sweat, thus playing a role in preventing cancer.
Drink 6 glasses of water every day.
A study in the New England Journal of Medicine, one of the most authoritative medical journals in the world, shows that men who drink 6 glasses of water a day (240 grams per cup) have a reduced risk of bladder cancer by half, and women have a reduced risk of colon cancer by 45%.
Peng Yifan, deputy director of colorectal surgery at Beijing Cancer Hospital, said that this is because drinking water can increase the number of urination and defecation, and discharge harmful substances that may irritate bladder mucosa and colon, such as urea and uric acid.
He also reminded that it is best for people over 40 to have a colonoscopy every two or three years. If there are polyps, early detection can reduce the chance of cancer.
Sunbathing 15 minutes
Among the cheapest anti-cancer prescriptions, sunbathing is the ultimate. It can prevent cancer by increasing the content of vitamin D in the human body, and there is no cost.
Professor Hong Zhaoguang, the chief health education expert of the Ministry of Health, told the reporter of Life Times that insufficient vitamin D will increase the risk of breast cancer, colon cancer, prostate cancer, ovarian cancer and gastric cancer.
In order to avoid increasing the risk of skin cancer, it is enough to get 15 minutes of sunshine every day.
Four cups of green tea a day.
Japanese who love tea once spent nine years doing a survey and found that drinking four or five cups of tea a day can reduce the risk of cancer by 40%.
Professor Han Chi, a researcher at the Institute of Nutrition and Food Safety of China Center for Disease Control and Prevention, has studied the anticancer effect of tea for 17 years. He found that oolong tea, green tea and black tea have good preventive effects on oral cancer, lung cancer, esophageal cancer and liver cancer. Among them, green tea, including Longjing, Biluochun and Mao Feng, has the most remarkable effect, and its anticancer components are five times that of other teas. www.ff70.com
But it is best not to drink tea that is too thick and hot, otherwise it will affect its anti-cancer effect. The optimum temperature for drinking tea should be about 60 degrees Celsius, and the effective components can only be dissolved in water after the tea leaves are soaked for 5 minutes.
Chew rice 30 times in one bite.
According to a survey, people who always gobble up food are more likely to get stomach cancer. Chewing more can reduce the burden of food on the digestive tract and reduce the risk of gastrointestinal cancer.
In addition, experiments at the University of Georgia in the United States found that saliva has a strong "toxic" effect, which can make the toxicity of aflatoxin, the chief culprit of liver cancer, disappear almost completely within 30 seconds.
Therefore, according to the calculation of chewing once a second, it is best to chew a meal for 30 times to prevent cancer.
Sleep enough for 7 hours
A survey by the American Cancer Society found that women who sleep less than 7 hours a night have a 47% higher risk of breast cancer. This is because melatonin is produced during sleep, which can slow down the production of estrogen in women, thus achieving the purpose of inhibiting breast cancer.
Shi Ming, deputy director of Shanghai Chinese Medicine Insomnia Medical Cooperation Center, suggested that it is best to start washing before 10: 30 in the evening, make good preparations before going to bed, and ensure that you fall asleep before 1 1 and get up at 6-7 in the morning.
In addition, German sleep experts pointed out that noon 1 is the obvious sleep peak during the day. At this time, taking a nap can also enhance the activity of immune cells in the body and play a certain role in preventing cancer.
1, what do you know about cancer physical examination?
1. Imaging detection: such as chest film, chest X-ray, PET-CT, etc.
The current research shows that chest radiograph is not enough to detect nodules with smaller diameter, and low-dose spiral ct can only detect nodules with cm size, but most of these nodules are benign. The current clinical research data support the detection of low-dose spiral CT in tumor patients over 50 years old who smoke regularly. It is not recommended for ordinary people to test, because the accumulation of radiation will cause cancer risk.
PET-CT is a very expensive examination, ranging from 8000 to 10000. It is generally used to judge whether the tumor has metastasis. Some testing structures that have no bottom line regard this test as part of the physical examination. You should know that the radiation of this physical examination is very high, and no authoritative organization recommends using PET-CT for health examination. Moreover, even PET-CT can only detect nodules with a diameter of 1cm. Negative results of PET-CT can't completely rule out a person without cancer. This crime is not worth committing, and the money spent is really wrong.
Second, blood tumor markers
Some tumor markers, including carcinoembryonic antigen (CEA) and alpha-fetoprotein (AFP), claim to reach more than ten items. However, the increase of these tumor markers does not necessarily mean cancer, but only indicates that there are certain health problems. These tumor markers exist not only in malignant tumors, but also in benign tumors, embryonic tissues and even normal tissues. The blood tumor markers of many cancer patients are normal in clinic, so tumor markers are not sensitive and specific indicators of whether a person has cancer or not. It is said that a few drops of blood are used to detect tumor markers and judge the risk of cancer. In fact, it is no different from prescribing drugs indiscriminately.
Third, genetic testing, there are some things you need to know.
Through genetic testing, we can know two things, one is whether the risk of cancer is high or not, and the other is whether you have cancer but have no symptoms, so you can be cured without metastasis and resection. This is a very beautiful idea.
Judging cancer risk through genetic testing is genetic tumor genetic testing, which is to detect the genes of normal cells in human body to see if there are natural tumor susceptibility genes. There is no more here, the better. For example, in lung cancer, no gene mutation related to cancer risk has been found at all, so it is nonsense to measure a few points casually to tell a person the risk of lung cancer. Moreover, the genetic detection of hereditary tumors must detect the coding regions of all genes, not a few hot spots, so although several hundred dollars is very cheap, it is irresponsible and immoral for the subjects.
On the other hand, the detection of DNA fragments released from blood collection (circulating tumor DNA) or intact tumor cells (circulating tumor cells CTC) is in the scientific research stage, and there is no convincing data to prove that these can be used for early diagnosis of tumors. It may be possible in the future, but it is not possible to find tumors at a very early stage. We can look forward to this bright future, but we can't sell it by this.
Then the question is coming, what is reliable?
The problem is that most of the current physical examinations are cursory, and the results of physical examinations have been greatly discounted. There are some scientific physical examinations as follows:
1.Patients over 45 years old with hepatitis B should have regular abdominal B-ultrasound examination.
2. Two years after having sex for the first time, women made cervical smear cytological examination and found cervical cancer.
People over 3.50 years old who smoke more than/kloc-0 per pack every day for more than 20 years need low-dose spiral CT.
4. People who live irregularly for a long time, overeat and have bad eating habits do gastroscopy.
5. Anal digital examination, the simplest way of rectal cancer screening, is to check for abnormal stool habits or long-term bloody stool.
6.b-ultrasound and abdominal B-ultrasound can detect the status of abdominal organs, and patients with chronic hepatitis and cirrhosis should check. Pelvic B-ultrasound can learn about ovaries and accessories.
7. The abnormality of three routine tests, especially blood routine tests, is probably the manifestation of blood tumor.
8. Liver and kidney function, can find out the function of liver and kidney, patients with chronic hepatitis and liver cirrhosis must check.
9. Tumor markers, such as CEA, AFP, CA 125, have indirect suggestive effect, but are not specific.
10. Chest X-ray. Non-high-risk groups can check chest radiographs to exclude some risks.
1 1. Genetic testing, that is, genetic testing of hereditary tumors, can be checked for patients with family history, but it pays attention to authority.
In short, what needs to be understood about cancer prevention physical examination is that any physical examination is not 100% sensitive and accurate, but only an indirect reference. It does not need to spend too much money on radiation, but it increases the risk of cancer.