Technologies are generally described for controlling food intake. Example devices/systems described herein may include an image sensor, a dietary information identifier, a dietary management unit, and an image display unit. The image sensor may capture an image of a dish or a menu. The dietary information identifier may identify the dish or menu from the image and provide meal dietary information based on the identified dish or menu. The dietary management unit may store personal dietary information and determine combined dietary information based on the personal dietary information and the meal dietary information. The image display unit may process the captured image based on the combined dietary information in such a manner that a part of the captured image is hidden on an image display unit or a part of color or text information of the captured image is changed on the image display unit.