How many studies support Journaling?

Expressive-writing and journaling interventions — writing about a stressful or traumatic experience for a set period, following the classic Pennebaker paradigm — have been tested in numerous randomized controlled trials, and the accumulated evidence has not shown the general health benefit the practice is often assumed to have. That's backed by 5 published studies in Vitaebase's database, including 4 randomized controlled trials and 1 meta-analysis, the most recent from 2021 -- a modest but real research base.