A computer-implemented method for indicating a long-term stress level of a person by means of a data processing unit, including the steps of acquiring stressor data having a set of stressor data items； analyzing stressor data values of the stressor data items by means of an artificial neural network to generate data representing a stress level, wherein the artificial neural network (ANN) is trained to provide output representing the stress level based on the stressor data values and an indication of previous stress state； and signaling the stress level.
