A meta-analysis of randomized controlled trials of laughter and humour interventions on depression, anxiety and sleep quality in adults.

This review synthesized current evidence using laughter and humour interventions to reduce negative emotion and promote better results in adults, especially with respect to target the applicability between different populations or intervention methods. In addition, humour and laughter interventions are safe, convenient, interesting and can promote interpersonal relationship in both patients and medical workers, which have great feasibility and potential to be used as an aspect of psychotherapy for clinical and nursing to improve well-beings in adults.