Abstract: A diet management device which includes a housing; respective manually actuated detented slide members respectively associated with each of predetermined food groups; and a respective numerical display for each detented slide member for providing numerical indicia as a function of the position of the respective detented slide member. The diet management device further includes for predetermined daily calorie limits respective removable encoded card inserts for cooperating with the slide members to set the initial positions of the slide members. The initial positions provide for the predetermined food groups indications of the respective maximum amounts of food which can be consumed for a predetermined daily calorie intake. The respective slide members are moved to decrement the respective displayed numerical indicia pursuant to the intake of food.