A health management guideline advising device includes input means for inputting personal information of a measuring subject； measurement means for measuring weight and body impedance of the measuring subject； estimation means for estimating a body composition distribution of the measuring subject from the inputted personal information and the measurement result by the measurement means； storage means for storing the measurement result by the measurement means and an estimation result by the estimation means with a measurement date and time, prediction means for predicting future weight fluctuation from the stored weight and the body composition distribution； and display means for displaying the predicted future weight fluctuation. Furthermore, target setting means for setting a weight reduction target and determination means for determining whether or not the weight reduction target can be achieved based on the prediction result by the prediction means are preferably arranged.
