1. An information processing device, comprising; holding means for holding as reference information a captured image of at least one dish or a drink and nutrition value information set for the item of food or drink included in the image, so as to be correlated to each other; means for receiving an image including at least one dish or a drink; and retrieving means for retrieving a plurality of images similar to the image received from the reference information held in the holding means; means for calculating a statistic of a plurality of nutrition value information pieces correlated to the plurality of respective images retrieved; and means for outputting the statistic calculated.