Abstract: A method and apparatus for providing for the insulin needs of a diabetic individual utilizes blood flow in the digestive tract as the operative variable. Such blood flow is monitored and when deviations from a base level are sensed insulin is provided in measured amounts. The blood flow may be monitored on a continuous basis to provide real-time analysis and delivery. The system may be under microprocessor control, and may include recording means to allow a record of blood flow and insulin delivery to be made either for insulin need computation or for later review.