A lot of patients and their families ask why some diabetic foot patients are old and some are young. To what extent does a diabetic foot develop before it rots? Our hospital diabetic foot specialist tells you that as long as the blood sugar is not well controlled, the foot can rot at any time. Diabetes itself is not terrible, what is terrible is the complications, I believe many people know this saying. Long-term high blood sugar or large blood sugar fluctuations will have a variety of effects on the body. For example, the effect on the blood vessels of the lower extremities. Diabetes affects blood vessels throughout the body, with the distal extremities, especially the lower extremities, having a greater impact. Diabetes can lead to narrowing or even occlusion of the blood vessels in the lower extremities, insufficient local blood supply, tissue ischemia and easy breakage, resulting in wounds that do not heal easily or that appear for unknown reasons, causing diabetic foot. Many young patients, because of work, life and other reasons do not pay attention to blood sugar control, do not take medication on time or even do not take medication, the wound will be infected and not heal. In contrast, patients who have had diabetes for 20 years and 30 years have good blood glucose control but no complications. So, blood sugar control is a big hurdle. Of course, there are other reasons for the occurrence of diabetic foot, such as blood pressure, blood lipids, age, living habits, economic conditions, literacy level and trauma, etc. But in any case, with early prevention and regular treatment, it is possible to reduce the chance of diabetic foot occurrence. We hope that we should develop good habits in our daily life, combine diet and exercise on the basis of medication, and keep our blood sugar in the ideal range, and we will not lose our health. If you already have a diabetic foot ulcer, you should be transferred to a department or hospital specializing in the treatment of diabetic foot in time to avoid aggravation.