Type 1 diabetes and type 2 diabetes both have genetic and environmental factors involved, genetic factors play a more important role in type 2 diabetes than in type 1 diabetes. type 1 diabetes is more closely related to autoimmunity. Diabetes is mainly triggered by the following factors: 1. Obesity: Obesity is one of the most important factors triggering type 2 diabetes. It is reported that more than 40 years of age onset of about 2 / 3 patients in the onset of overweight 10%, women more obvious. Obese people have fewer insulin receptors in tissue cells and reduced sensitivity to insulin. 2, less movement: less activity will cause obesity, so that insulin sensitivity is reduced. 3, more food: eating too much easily cause obesity, high fat, high sugar diet may induce diabetes. Long-term eating refined flour, rice, etc. will cause a lack of trace elements and vitamins, and certain trace elements such as zinc, magnesium, chromium, etc. play a very important role in pancreatic islet cell function, insulin synthesis, energy metabolism. Long-term sweets will increase the burden on the pancreatic beta cells, which may induce diabetes. 4, age: as we age, glucose tolerance is decreasing, and people over 45 years old are prone to type 2 diabetes. 5.Pregnancy: Pregnancy is a stimulating factor for diabetes. Human lactating growth hormone, estrogen and corticosteroid secreted by the placenta during pregnancy have antagonistic effects on insulin, which can raise blood sugar. Pregnancy can accelerate the degradation of insulin, and about 80% of normal pregnant women’s tissues have reduced sensitivity to insulin, making their insulin production relatively insufficient. 6, infection: some diabetes and viral infections have a significant relationship. Virus may damage islet tissue directly or indirectly by stimulating autoimmune response. 7, stress factors: In stressful situations such as trauma, surgery, acute cardiovascular disease, the body increases glucagon, which accelerates the conversion of liver glycogen into glucose and hyperglycemia occurs, which can induce diabetes. At present, it is believed that obesity is the most common risk factor among type 2 diabetes patients, and eating more and moving less is the main cause of obesity, so it is very important to change lifestyle and control weight to prevent diabetes!