It is impossible for 55-year-old rectal cancer to heal itself. Rectal cancer is a common malignant neoplastic disease of the digestive system, and the cause of the disease is generally related to the individual’s dietary habits, genetic factors and so on. The clinical symptoms of this disease include change of bowel habit, bloody stool, pus-blood stool, urgency, constipation, diarrhea and other conditions. Whether you are 55 years old or any other age with rectal cancer, it cannot be cured by itself. Since rectal cancer cannot be cured by itself, once diagnosed it should be treated proactively according to the doctor’s requirements, and the main treatment is surgical resection assisted by radiotherapy. In the meantime of active treatment, one should actively exercise, have a balanced diet and keep a happy mood. Although rectal cancer cannot be cured by itself, it should be treated correctly under the guidance of doctors and should not be neglected.