The purpose of the present invention is to make it possible to provide information for designing and offering a reasonably- and profitably-priced insurance product and service, taking into account risk of future disease development in persons to be insured. The insurance information service system (100) according to the present invention is provided with a communication device (105) which communicates with other communication devices, and is also provided with a calculation device (104) which: applies a predetermined algorithm (110) to test data (125) of a predetermined number of persons, the test data being obtained from a predetermined device and including predetermined items relating to one or more diseases; calculates a predicted value of the probability of a person with one or more predetermined attributes developing a predetermined disease during a predetermined future period of time, and/or a predicted value of the medical cost incurred by that person during the predetermined future period of time, sai
