There is provided a mechanism of a diagnosis support system which performs computer processing of data obtained from an object to be examined and presents the obtained diagnostic information. A diagnosis support apparatus includes a diagnosis support processing means which processes data obtained from the object to extract diagnosis support information, a storage means which stores the examination history of the object, and a changing means which changes a processing method in the diagnosis support processing means in accordance with the examination history of the object stored in the storage means. For example, diagnosis processing is executed to obtain medical diagnostic information by performing computer processing of data obtained from the object, and the processing method for diagnosis support processing is changed in accordance with the examination history of the object.