In diabetes there is defect in insulin secretion and or action, and this condition leads to increase in blood sugar level. Insulin is a hormone that is produced and secreted by pancrease. It helps to move glucose from the blood into the cells of a human body.
Type 2 diabetes is the commonest among all forms of diabetes. It develops slowly over the years and symptoms are usually not intense before diabetes is fully developed. Prior to the progression to diabetes there is a period of abnormal glucose levels, and this period is particularly important because during this period the development of diabetes can be prevented by adopting healthy lifstyle.
Above figure (fig 1) shows some of the important organs of a human body where insulin acts. In obesity, the action of insulin is usually resisted in muscles, fat cells and liver, causing a condition called ‘insulin resistance syndrome. This condition is usually followed by development of type 2 diabetes.