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Type 2 diabetes (T2D), formerly known as adult-onset diabetes, is a form of diabetes mellitus that is characterized by high blood sugar, insulin resistance, and relative lack of insulin. [6] Common symptoms include increased thirst , frequent urination , fatigue and unexplained weight loss . [ 3 ]
Most cases of type 2 diabetes involved many genes contributing small amount to the overall condition. [1] As of 2011 more than 36 genes have been found that contribute to the risk of type 2 diabetes. [2] All of these genes together still only account for 10% of the total genetic component of the disease. [2]
Obesity has been found to contribute to approximately 55% of cases of type 2 diabetes; [10] chronic obesity leads to increased insulin resistance that can develop into type 2 diabetes, [11] most likely because adipose tissue (especially that in the abdomen around internal organs) is a source of several chemical signals, hormones and cytokines, to other tissues.
Diabetes was the 9th-leading cause of mortality globally in 2020, attributing to over 2 million deaths annually due to diabetes directly, and to kidney disease due to diabetes. [2] The primary causes of type 2 diabetes is diet and physical activity, which can contribute to increased BMI, poor nutrition, hypertension, alcohol use and smoking ...
Diabetes mellitus cases due to a known defect are classified separately. Type 2 diabetes is the most common type of diabetes mellitus accounting for 95% of diabetes. [2] Many people with type 2 diabetes have evidence of prediabetes (impaired fasting glucose and/or impaired glucose tolerance) before meeting the criteria for type 2 diabetes. [57]
The Journal of Diabetes is a monthly peer-reviewed medical journal that covers research, therapeutics, and education in the field of diabetes mellitus. It is published by Wiley and is an official journal of the Chinese Society of Endocrinology and endorsed by the Chinese Endocrinologist Association .
An important factor for beta cell functionality is proper glycemic control, a factor it shares with type 2 diabetes. Patients who maintain proper glycemic control to protect their functioning beta cells exhibited lesser disease courses and regained beta cell functionality at a much higher rate than patients who had looser or less stringent ...
The leading cause of hyperglycemia in type 2 diabetes is the failure of insulin to suppress glucose production by glycolysis and gluconeogenesis due to insulin resistance. [39] Insulin normally inhibits glycogenolysis, but fails to do so in a condition of insulin resistance, resulting in increased glucose production. [40]