Expressive writing is a therapeutic intervention designed by the psychologist James W. Pennebaker. Individuals write on three days for about 20 minutes about particularly stressful experiences in their life. Several studies showed that expressive writing can have beneficial effects on the frequency of health care utilization and well-being. Particularly in patients with rheumatism, kidney cancer and posttraumatic stress disorder expressive writing showed an positive effect on subjective well-being. Furthermore, in several studies expressive writing showed a positive effect on immune parameters.