A health management device according to this invention comprises: an exercise quantity measurer for measuring a quantity of exercise; an intake calorie calculator for calculating an intake calorie on the basis of input information of meal including the types and quantities of foods; a consumption calorie calculator for calculating, on the basis of the information of a quantity of exercise measured by the exercise quantity measurer, a calorie consumed by the exercise; a calorie balance analyzer for analyzing a calorie balance on the basis of the calculation results of the intake calorie and the consumption calorie; a diet effect simulator for simulating a diet effect on the basis of the information of the analyzed calorie balance and personal information; and a moving image display controller for changing a display character to display the diet effect with a moving image.