A device for assisting lifestyle disease improvement, provided with a condition classification unit, a representative value calculation unit, and an output unit. The condition classification unit reads biological information measurement values and a lifestyle status, for which there are two or more categories as regards a plurality of lifestyle improvement items, associates each of the biological information measurement values with the lifestyle status on the basis of information on the date and time when the lifestyle status was reached and information on the date and time when the biological information measurement values were measured, and classifies the biological information measurement values into at least two measurement value groups on the basis of the lifestyle status. The representative value calculation unit calculates a biological information measurement representative value for each of the measurement value groups. The output unit outputs each of the biological information measurement representative values corresponding to the lifestyle status.
