There is no link between Keflex and bowel cancer. The main ingredient of Kefir is glycerin, which is not harmful to human body, so there is no need to worry too much. In clinical practice, Keflex is commonly used in the treatment of constipation. In the process of using Keflex, if it is not used properly, it may damage the mucous membrane of the rectum or anal canal, causing bleeding and scratching, and even causing infection. Prolonged use of corkscrew may also lead to perianal sphincter function incoordination, but aggravate constipation. Therefore, it is not recommended that patients use Kefir for a long time to regulate constipation. Long-term constipation patients are recommended to go to the hospital gastroenterology department, can take some simple laxative under the guidance of the doctor for treatment. Meanwhile, patients should pay attention to dietary adjustments, eat more high-fiber foods, such as corn, potatoes, groundnuts, as well as fresh fruits and vegetables, and develop a good habit of regular defecation every day, so as to relieve constipation. Bowel cancer is a common malignant tumor, including colon cancer and rectal cancer. The cause of bowel cancer is still unclear and may be related to a variety of factors such as heredity, intestinal inflammation, intestinal polyps, radiation, environmental factors, mood, and intake of irritating foods. It is currently believed that intestinal polyps are a high-risk factor for the development of bowel cancer, while the long-term use of corkscrew is not closely related to the development of cancer in the bowel.