Once diagnosed with diabetes, patients are basically doomed to a daily life without the link of sugar control, which is one of the effective ways to prevent complications from diabetes. In general, in addition to the use of drugs, it is also necessary to adhere to long-term life interventions. With regard to these almost invariable methods of sugar control, why is it said that complications are more likely to occur in winter? Dieting is a very important presence in the sugar control process of life interventions. The winter season will prompt the body to increase digestive enzymes and improve appetite. Excessive eating will only make the body absorb more sugar, which will make it more difficult for diabetics to control their blood sugar. In addition, the drop in temperature will lead to a rise in blood pressure, even if the diabetic patient has been able to control blood sugar smoothly for a long time, but compared to healthy people, the cardiovascular and cerebrovascular aspects are more fragile, which can lead to complications such as blood vessel blockage and cerebral hemorrhage in serious cases. Although winter is more dangerous for diabetic patients, with the current level of medical development, most type 2 diabetes can avoid this crisis, especially for type 2 diabetes patients who are triggered by severe obesity, and can be treated with weight loss surgery. It is already relatively common to have both obesity and type 2 diabetes in one person, and it is for this group of patients that bariatric surgery is aimed at treating diabetes through weight loss. The results derived from the surgery are unmatched by traditional medical medication, and the patient is able to stay in a healthy blood sugar range for a long time after the surgery and is no longer dependent on medication.