What is type 1 diabetes and what is type 2 diabetes?

Type 1 diabetes and type 2 diabetes are distinguished according to different causes. The causes of type 1 diabetes are genetic factors, viruses or poisons. The most important is the destruction of islet B cell function by autoimmunity, resulting in an absolute lack of insulin secretion. Type 2 diabetes is caused by genetic factors, as well as environmental factors, such as obesity, high-calorie diet, low exercise and other environmental factors, resulting in insulin resistance and relatively insufficient insulin secretion.