emergency endocrinology member of the european association for the study of diabetes , international diabetes federationropean and belarusian association of endocrinologists. let's first find out what is insulin and what is glucose and in general how are they connected to each other and are connected insulin is a hormone that is produced by the pancreas by beta cells and insulin lowers blood glucose levels. insulin - this is the main hormone that regulates the entire metabolism of the entire metabolism, that is, insulin regulates the metabolism of glucose under the action of insulin , protein is synthesized and muscles grow. under the action of insulin, fat is synthesized and under the action of insulin, slow carbohydrates, starch , or as we call it glycogen, are synthesized in the muscles and in the liver. that is, it is one of the main metabolic analytical human hormones, what happens to this hormone and why this happens to it. e, if a person is diagnosed with diabetes, usually a diagnosis of diabetes indicates that the a person does not have enough insulin to ensure normal metabolism and, first of al