The bioelectric impedance of the body is measured by communication device by capturing personal body data. The weight and fatty mass average are calculated by the measurement device using consecutive measurements. The measured values are compared with the previous values of the same body. The evolution of the body composition is displayed around the circular central zone of the graphic display device (11) corresponding to stability zone of the body composition. The stability zone is determined on the basis of the averages and standard deviations of the calculated parameters. The central zone is surrounded by an annular surface with four dials for message display.
