Metabolic Activation Therapy (MAT®) is a procedure which uses intravenous insulin pulses administered with oral glucose to deliver an insulin treatment regimen that improves the biochemistry and physiology of diabetic and non-diabetic individuals. If implemented preoperatively to patients with a history of hyperglycemia who undergo surgical and other stress inducing procedures, including those requiring hospitalization, postoperative glycemic control is improved and the insulin required during and after the operation is decreased with no increase in incidents of hypoglycemia. If implemented in patients not previously known to have diabetes but who are at high risk for becoming hyperglycemic in response to said surgical/medical procedures known to be physiologically stressful, it results in increased insulin sensitivity, lower circulating glucose levels post procedure, and shorter length of hospital stay. At the attending physician's discretion, patients already receiving MAT® treatment on a weekly or bi-weekly basis may not require any additional treatment prior to undergoing surgical or other stress inducing medical procedures.