Metabolic syndrome is believed to develop due to insulin resistance. Insulin is a hormone that is produced by the pancreas (an organ located near stomach). It helps blood sugar enter cells, where it is used for energy. With insulin resistance, the body fails to recognize the insulin that is produced, causing the sugar to accumulate in the blood instead of being absorbed into other cells. Because blood sugar levels remain high, the pancreas keeps producing more and more insulin, leading to high insulin levels. While blood sugar levels are not high enough to be classified as diabetes, they do increase the risk of developing serious health problems.
Insulin is vital to patients with type 1 diabetes - they cannot live without a source of exogenous insulin. Without insulin, patients with type 1 diabetes develop severely elevated blood sugar levels. This leads to increased urine glucose, which in turn leads to excessive loss of fluid and electrolytes in the urine. Lack of insulin also causes the inability to store fat and protein along with breakdown of existing fat and protein stores. This dysregulation, results in the process of ketosis and the release of ketones into the blood. Ketones turn the blood acidic, a condition called diabetic ketoacidosis (DKA). Symptoms of diabetic ketoacidosis include nausea, vomiting, and abdominal pain. Without prompt medical treatment, patients with diabetic ketoacidosis can rapidly go into shock, coma, and even death may result.