The final objective of this study was to evaluate the potential effectsof the group-based laughter yoga (LY) intervention on depression, anxiety, stress and health related quality of life. The results were encouraging as there were statistically greater improvements in depression and mental health related quality of life in the LY group comparedto the control group immediately after the intervention. However, thesestatistically significant improvements were not apparent from baselineto 3 months follow-up. There were no significant differences betweengroups in other outcome measures.