The relationship between diet of colon cancer
Colon cancer is a common one, to the age of 40 to 50 age group the highest incidence rate. According to the World epidemiological survey and found that colon cancer in North America, Western Europe, Australia and New Zealand, the highest incidence rate, ranking kinds of offal before the two, but in Asia, Africa, Latin America and other places is very low incidence rate. China’s incidence and mortality rate lower than the stomach, esophageal cancer, lung cancer, and other common malignancies. As the data show that in recent years around the improvement of living standards, structural changes in diet, the incidence rate was on the trend year by year. Chinese and Japanese colorectal cancer incidence rate was significantly lower than the United States, but immigration to the United States of the first generation to see the increased incidence of colorectal cancer, the second-generation Americans close to the incidence rate. From the epidemiological point of view, the incidence of colon cancer and the environment, living habits, particularly on the catering way.Is generally believed that high-fat diet and lack of cellulose is the main cause of morbidity. Studies have shown that polyunsaturated fatty acids in the diet to increase the colon of bile acid and neutral steroid concentrations, and to change the composition of coliform bacteria. The role of bile acid bacteria can generate 3 - gall-carcinogenic substances such as anthracene, steroids can also ring the role of bacteria was formed aroma of carcinogenic substances. Food and fiber, including cellulose, pectin, hemicellulose and lignin, absorb moisture and increase stool volume, diluted enteral remnants of concentration, to shorten the time stool through the large intestine and reduce the carcinogenic substances and intestinal contact time If lack of dietary fiber, the incidence of colon cancer is one of the factors.

Colorectal chronic inflammation, such as ulcerative colitis the incidence of colorectal cancer than the general population, inflammation of proliferative lesions in the development of polyps often can be formed, for the further development of colorectal cancer, Crohn’s (Crohn) disease, a colon , Who may suffer from rectal cancer. Schistosomiasis endemic areas and non-endemic area of colon cancer incidence and mortality rates are significantly different from the past that Chronic schistosomiasis patients, the intestinal wall schistosome eggs deposited with the toxin stimulation, leading to the chronic intestinal ulcers, inflammatory polyps, in turn cause cancer.

According to general statistics, there are patients with colon polyps and colon cancer incidence rate of colorectal polyps in patients with no five times. Family history of multiple intestinal income sarcoma, a higher incidence of cancer.

In recent years, there have been reports of colon cancer-positive family, their incidence rate is four times the general population that genetic factors may be involved in the incidence of colon cancer.