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.
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