1. A glucose tolerance analyzer comprising: an accepting section configured to accept inputs of information regarding a type of food or drink ingested by a subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in the subject after the ingestion of the food or drink; an output section configured to output an analysis result of glucose tolerance; and a controller configured to: calculate a reference value for analyzing glucose tolerance of the subject based on the accepted information regarding the type of the food or drink ingested by the subject and the information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink; analyze the glucose tolerance of the subject based on the accepted information regarding the amount of glucose and based on the calculated reference value; and control the output section to output an obtained analysis result as an analysis result of glucose tolerance.