Today the news reported that the haze can make the lungs of mice black, our intestines are not the same! The water you drink and the food you eat every day, you can imagine. This year, one of the municipal government’s projects for the benefit of the public colorectal cancer screening, has screened a large number of patients with colorectal cancer, of course, many are relatively early. In fact, many of them are only positive for occult blood. Those who see bleeding with the naked eye should be more careful and should not simply think that it is hemorrhoids, anal fissure and so on. You should see your doctor as soon as possible and have a colonoscopy. There are many people who may just have intestinal polyps that can be removed directly by colonoscopy. However, polyps may become cancerous if delayed for a long time. Currently, colon cancer is the fastest growing tumor in Shanghai, so we should be highly alert.