Fatty foods, the fat content of pork fat and lean are the large yellow croaker is 75 times too fat to have the lamb 4l times higher than the shrimp, pigs, cattle, lamb, cholesterol and saturated fatty acids than fish , chicken, shrimp. Intake of animal fat is more, the greater the risk of dissolution and absorption of the carcinogen. Gastrointestinal tract requires more bile in the digestion of high fat foods, excess bile decomposition by intestinal bacteria, resulting in the carcinogenic effects of two bile acids, the perennial role of such carcinogens in the intestinal mucosa. easy to make the intestinal mucosa cancer. Likes to eat high-fat foods stool of colorectal cancer detection, the bile acid content is many times higher than the low-fat diet and normal cholesterol content in the faeces of colorectal cancer patients than healthy subjects more than doubled.
Preserved foods have higher amounts of nitrate and nitrite with secondary amines in the flesh of nitrite synthesis, leading to the direct culprit of gastrointestinal cancer. Smoked foods contain up to 107 micrograms strong carcinogenicity of 3,4 - benzopyrene; toaster bacon containing 23 micrograms per kilogram of meat; in the smoked meat and fried foods also contain more heterocyclic amines. World Health Organization provides per kg of acrylamide in food should not exceed 1 mg acrylamide can cause genetic mutations, induce benign or malignant.
In addition, long-term alcohol abuse, smoking, and living without the law, psychological stress, too much pressure, not love sports, these factors that lead to colorectal cancer is far greater than the genetic and ethnic factors.
Performance of young people with colorectal cancer and the elderly
First, more occur in parts of the right side of the cecum and ascending colon cancer. In elderly patients with colorectal cancer, about 70 percent of people in the left side of the rectum, sigmoid and descending colon at; young people with colorectal cancer, mostly in the right side of the cecum or ascending colon site. The right half side of the large intestine fixed activity, the intestine is also wide-cancer activity is also relatively larger, less occurrence of the phenomenon of obstruction. Long in the left side of the colorectal cancer, the tumor than fixed, so prone to intestinal obstruction.
Second, more intense abdominal pain. Young people suffering from colorectal cancer, the progress of the disease foci of infiltration to the serosa, or diseases caused by inflammation, is easy to cause intestinal cramps, caused by severe abdominal pain. The organs of the middle-aged due to aging degradation, decreased sensitivity to pain, abdominal pain that appears lighter or dull pain. Mostly bloody mucus. The blood is the most common symptoms of patients with colorectal cancer in the elderly colorectal mostly the left side of cancer bleeding can be seen by the naked eye new blood will be discharged. Young people with colorectal cancer on the right, because the feces are not yet fully formed in the right half side of the colon, so the bleeding often mixed with the stool. Some patients also obvious anemia.
Fourth, and more invasive type of cancer. Young people with colorectal cancer to the majority of invasive type of cancer, cell differentiation, infiltration ability. More likely to spread to the surrounding deep tissue and poor prognosis, their 5-year survival only in elderly patients with colorectal cancer 1/4.