The present invention is to present a diagnostic support apparatus for diabetes including a diagnostic support information generating unit which generates diagnostic support information of a patient based on a biological model for reproducing a pseudo-response which simulates a result of a glucose tolerance test for the patient. The biological model comprises a plurality of simulated organ blocks which are configured in such manner that inflow and outflow of glucose and/or inflow and outflow of insulin are reciprocally produced between each of the simulated organ blocks. The plurality of the simulated organ blocks respectively calculate at least one of a cumulative quantity and a concentration of glucose and/or at least one of a cumulative quantity and a concentration of insulin in the respective simulated organ blocks, based on a quantity of inflow and outflow of glucose and/or a quantity of inflow and outflow of insulin in the respective simulated organ blocks.