The phrase “rule out the impossible” applies not only to detectives, but also to doctors. Because different causes or multiple causes can cause the same condition. For example, a chest pain may be a stomach problem or a heart problem. Only through examination can the patient’s health and the cause of the disease be correctly assessed. I remember a patient in the clinic who had a test result that looked very much like gastric reflux, but the indication was not significant. Although the patient wanted to have a surgical procedure to relieve the condition, he was asked to undergo further tests to be on the safe side. It was found to be an esophageal dysfunction due to gastric insufficiency, which is mostly caused by psychological stress, and I advised the patient to go home and recuperate. At that time, I felt a sense of accomplishment as a doctor. If I had not made the right judgment, I think the patient would have gone under the knife for nothing. Before weight loss surgery, we will be asked to diagnose, and some patients who say they have normal preprandial blood glucose are found to have diabetes. This is because a normal preprandial blood glucose does not confirm the absence of diabetes, but a normal preprandial blood glucose and a high postprandial blood glucose can also be defined as diabetes. This is why I mainly refer to the glycated blood glucose protein index. There are patients who are afraid to go to the hospital, a check all over the disease! There are also naughty patients who go to the hospital for their own “selected items”. The body has a compensatory function, although there is a disease, but can be “overdrawn” to make the body seem healthy, when the onset of the disease and then go to the doctor is just a sheep mending. Doctors and patients need to reach a mutual trust in order to better cure the disease.