1. A content output apparatus comprising: a detector for detecting a user; an extractor for extracting a feature of the user detected by the detector; an age estimator for estimating an age of the user based on the feature extracted by the extractor; and a controller for controlling: a reproduction speed of content to be output to a display according to the age estimated by the age estimator; a switching speed for switching the content to other content according to the age estimated by the age estimator; and a switching speed for switching menu items to be output to the display to other menu items according to the age estimated by the age estimator.