Sun Yan, academician of China Academy of Engineering and chief physician of oncology department of Cancer Hospital of China Academy of Medical Sciences, once said, "I am an expert in clinical oncology, but I don't know when cancer will occur in my body. Our body is like a sophisticated car. Every organ works hard for 24 hours, and of course it needs maintenance and overhaul. Many tumors can be said to be "induced" by their bad habits. For example, eating too much high-fat diet and eating meat instead of vegetables is easy to induce more and more patients with intestinal cancer; The increase of smokers will lead to many innocent "second-hand smoke" lung cancer patients; Sexual dysfunction and human papillomavirus (HPV) infection increase the incidence of cervical cancer. Another study found that long-term negative emotions can cause stress response, and too strong stress response will reduce human immunity and give cancer cells an opportunity.

"However, these negative factors are completely controllable. Sleep when you should, eat when you should, exercise for a certain time every day, and don't smoke or drink. Develop regular living habits and keep a good pace of life. In short, don't artificially create many unfavorable factors for yourself, which is conducive to cancer prevention and control. "

2. Cancer prevention begins with walking.

The latest research by Rambler Association and Macmillan Cancer Aid Center, a British charity, found that walking 1.6 km within 20 minutes every day has obvious benefits for the treatment of breast cancer, prostate cancer and intestinal cancer, and can reduce the risk of death by up to 50%. Benedict Southworth, who led the study, said that the British government suggested that adults should do moderate exercise, such as walking in Zhong Jian for 65,438+050 minutes a week. Previously, a number of recent international studies clearly pointed out that walking can enhance immunity, improve endocrine and regulate hormone levels, and has outstanding effects in preventing cancer.

Liu Xin, chief physician of the Center for Disease Control and Prevention of Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, pointed out that you should not deliberately keep a fixed walking posture to avoid neck and shoulder discomfort. Warm up moderately before walking, and then accelerate when the soles of your feet start to heat up. If you choose to take a walk after meals, you should do it within half an hour after meals and two hours before going to bed.

Being overweight will increase the risk of cancer.

A recent study published by the University of Manchester in the United Kingdom shows that a significant increase in weight over a period of time will increase the risk of cancer. The study found that the risk of cancer in men whose body mass index increased from 22 to about 27 was significantly higher than that in men with normal weight. If the body mass index of women increases from 23 to around 32, the risk will increase 17%. Body mass index (BMI) is a commonly used index to measure the degree of obesity in the world. The calculation method is weight (kg) divided by the square of height (m). An index over 25 is overweight, and over 30 is obese.

Chen Shilin, chief physician of thoracic surgery in Jiangsu Cancer Hospital, pointed out that many previous studies on obesity and cancer confirmed that overweight or obesity was related to the risk of colorectal cancer, pancreatic cancer, breast cancer and other cancers. So losing weight should be one of the effective ways to prevent cancer.

No matter how good the vegetable oil is, it will also cause cancer.

A recent study in Australia found that the high incidence of female lung cancer in Asian countries may be caused by vegetable oil. It is found that vegetable oil is extremely unstable and may release substances harmful to nerves at high temperature, thus mutating DNA and causing cancer. Compared with animal oil, olive oil and coconut oil, cheap vegetable oil extracted from plant seeds contains a lot of polyunsaturated fats. When these fats exceed 180℃, they will produce highly toxic chemicals that induce cancer.

Liu Xin pointed out that, in fact, normal vegetable oil itself does not cause cancer, mostly because of cooking methods. Vegetable oil contains heat-labile unsaturated fatty acids, which are prone to produce carcinogens such as acrolein when exposed to high temperature, and will cause disease if ingested in large quantities for a long time.

5. The high glycemic index will actually increase the risk of lung cancer.

20 16 The most controversial cancer news is a new study by Texas State University. The results show that the risk of lung cancer will increase by 49% if you regularly eat foods with high GI, such as white rice and white bread. The researchers compared and analyzed 1905 lung cancer patients and 24 13 healthy people. Patients with the highest glycemic index in their daily diet also have a higher risk of lung cancer. The risk of lung cancer in smokers with high GI is 3 1% higher than that in smokers with low GI. Conclusion The hyperglycemia index is related to the occurrence of lung cancer. Foods with high glycemic index include white rice and white bread.

Chen Shilin pointed out that eating rice in a normal diet will not cause lung cancer. This study only proves that foods with high glycemic index are related to the occurrence of lung cancer, and it cannot be simply understood that eating white rice will cause cancer. Domestic studies have also confirmed that pre-diabetes will lead to an increased risk of cancer.

6, the prevention of breast cancer cruciferous vegetables help.

Researchers at Oregon State University have found that cruciferous vegetables such as broccoli are rich in a compound that can slow down the growth of breast cancer cells, especially for patients with early breast cancer. The researchers took 45 breast cancer patients as subjects, some of whom took placebos, while others took a certain dose of sulforaphane supplements. The research team reported in the new issue of Cancer Prevention Research that the results showed that taking sulforaphane supplements reduced the cell growth characteristic index, which means that this compound may help slow down the growth of cancer cells.

Chen Shilin pointed out that eating Chinese cabbage in winter is also beneficial to women's breast health. Besides, we should learn to be happy in life and try to sum up a set of methods to adjust stress and bad emotions. For women with high risk factors, special attention should be paid to regular physical examination.

7. Eating 3 servings of nuts a week can prevent colon cancer.

A recent study in South Korea found that a diet rich in nuts can reduce the incidence of colon cancer in individuals. According to Aesun Shin, assistant professor of preventive medicine at Seoul National University School of Medicine, people who eat no less than 3 servings of nuts per week have a lower risk of colon cancer than those who don't eat nuts. Among them, women are particularly obvious.

Wang Yuanzhao, director of the anorectal department of Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, pointed out that some compounds in nuts, including fiber and antioxidants, can reduce the risk of colon cancer. In addition, eat less "three highs and one low" foods such as foods with high protein, high fat, high calorie and low cellulose.

8. Eating saury regularly can reduce the risk of liver cancer.

A survey recently released by the National Cancer Research Center of Japan found that a group of people ate about 70.6 grams of mackerel and saury. The risk of liver cancer is lower than that of a group of people who only consume about 9.6 grams a day.

Sun Gang, a Chinese medicine doctor, deputy director of the outpatient department of liver disease in Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, pointed out that the first thing to do to nourish and protect the liver is to avoid clonorchiasis. The main thing is not to eat raw fish and live shrimp, but to cook them well and not to covet delicious food. Prevention of liver cancer is also very important, that is, active treatment of hepatitis, liver cirrhosis and other diseases.

9. Tomatoes can not only beautify but also prevent skin cancer.

The latest research by Leibniz Institute of Environmental Medicine in Germany points out that eating tomatoes regularly can reduce wrinkles and prevent skin cancer. The researchers found that volunteers who ate tomatoes every day had significantly fewer genes related to wrinkles. Professor Jane Kutman, a researcher, said that this study confirmed that eating tomatoes regularly can effectively resist the adverse consequences caused by ultraviolet radiation, reduce wrinkles and prevent skin cancer.

Du Changming, director of the dermatology department of Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, pointed out that besides improving diet, the way to prevent sunburn is to minimize the sun exposure time, avoid strong ultraviolet rays as much as possible, develop good sunscreen habits, and apply sunscreen all year round.

10, Mango recently joined the "Anti-cancer Food Team".

Scientists at the Texas Research Center in the United States have found that mangoes are very beneficial to the human body, and eating more mangoes can help reduce the risk of cancer. Through research, scientists found that although the antioxidant content in mango is 3-4 times less than that in pomegranate and blackberry, its pulp contains polyphenols, which can prevent and prevent the formation of cancer cells in human body without side effects. Chen Shilin pointed out that polyphenols have good antioxidant activity and can play an antioxidant role together with other antioxidants in the body. Eating fruits and vegetables containing these substances in moderation is beneficial to cancer prevention.