A meta-analysis links structured laughter therapy with lower depression, anxiety, and stress scores, but it should be viewed as support, not a stand-alone mental health plan.
Laughter is not a cure. It may still matter. This paper reviews trial evidence.
Quick summary
- What the study found: In Effects of laughter therapy on depression and anxiety: A dose-response meta-analysis with trial sequential analysis, 33 randomized controlled trials reported lower depression, anxiety, and stress scores after laughter therapy.
- Why it matters: Laughter-based approaches are practical, low-burden supports that may fit alongside broader wellbeing or clinical care.
- What to be careful about: The abstract does not give exact optimal durations, and the findings should not be read as treatment advice.
Structured laughter was linked with lower distress scores
The meta-analysis found significant reductions in depression, anxiety, and stress scores among people receiving laughter therapy in randomized controlled trials.
The reported effects were measured using standardized mean differences. That method lets researchers combine results from studies that may use different symptom scales.
The direction was consistent: symptom scores were lower after laughter therapy. The paper also examined treatment duration, aiming to identify how long interventions might need to run.
The evidence came from combined randomized trials
The review searched major databases from their start through November 12, 2023. It included 33 studies using laughter therapy for outcomes such as depression, anxiety, stress, pain, or quality of life.
The authors used trial sequential analysis. In plain English, that is a check on whether the accumulated evidence is strong enough, or whether more trials may still shift the estimate.
Where this fits in daily emotional regulation
For everyday readers, the useful idea is simple. Structured laughter may be one small way to lower emotional strain, especially when it is planned rather than left to chance.
That could mean group laughter sessions, guided humor-based activities, or other organized laughter therapy formats. The abstract does not specify which formats were most effective.
The finding fits a broader pattern many adults recognize: emotional regulation often improves through small, repeatable practices, not one dramatic fix.
Use the finding without overusing it
This paper does not mean laughter replaces mental health care. Depression and anxiety can be serious, and people should not use this finding to delay needed professional support.
A safer takeaway is that laughter therapy may be a helpful complementary support. Complementary means added alongside other care or coping strategies, not used as a substitute.
It may also be easier to adopt than many formal wellbeing practices. Still, what works for one person may feel awkward, inaccessible, or unhelpful for another.
What remains unclear
The abstract says optimal durations were identified, but it does not provide the exact lengths. That limits what readers can apply directly from this summary.
The included studies likely varied in participants, intervention types, and outcome measures. Those differences can affect how confidently the results apply to any one person or setting.
The careful takeaway: structured laughter therapy has supportive evidence for easing distress scores, but it belongs in the support category, not the cure category.