The purpose of this research is to prove the feasibility of a novel device and software, which will allow IDDM patients to evaluate and predict the degree of metabolic control they achieved, and to perform minor corrections to their diet and exercise regiments, before an out-of-control condition occurs. Phase I, concept validation, will be performed using a personal computer and specifically developed software, in conjunction with a commercially available glucose monitor. Preliminary animal testing will be used. Phase II will consist of expanding the validation to human data, completing and expanding the software design, and developing a commercial device capable of plugging into and downloading data from a blood glucose monitor, as well as receiving information from the user, on the food and insulin intake, and exercise. The device will have the capability to communicate to the user the expected glycemic index at several time intervals. The equipment will have the capability of determining the patient-specific parameters of the model. The company will work closely with diabetes experts in order to design a device which will be likely to achieve a satisfactory level of patient compliance.National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)