Writing about your feelings improves mental and physical health.
Verdict: supported
Brief expressive writing produces small but reliable benefits across many outcomes.
What the evidence shows
Pennebaker & Beall (1986) asked people to write about their deepest thoughts on a traumatic event for a few sessions. Those who did later made fewer health-centre visits than those who wrote about trivial topics — suggesting that putting emotional experience into words has real effects.
A meta-analysis of 146 experiments (Frattaroli, 2006) confirmed a small but genuine benefit of expressive writing across psychological and physical health measures, stronger when people wrote about recent, unresolved events. It is not a cure-all, and the effect sizes are modest, but as a free, low-risk practice, expressive writing has a solid evidence base — one of the better-supported everyday interventions in this collection.
Sources
Pennebaker, J. W., & Beall, S. K. (1986). Confronting a traumatic event: Toward an understanding of inhibition and disease.
Journal of Abnormal Psychology, 95(3), 274–281
Participants who wrote about traumatic experiences later had fewer health-centre visits than controls.
DOI: 10.1037/0021-843X.95.3.274 →Frattaroli, J. (2006). Experimental disclosure and its moderators: A meta-analysis.
Psychological Bulletin, 132(6), 823–865
Across 146 studies, expressive writing produced small but significant improvements in health and well-being.
DOI: 10.1037/0033-2909.132.6.823 →