Effects of laughter therapy on prevention of life-style diseases incident and its complication: a randomized intervention study - Effects of laughter therapy on life-style diseases: a randomized intervention study

The comprehensive laughter program significantly improved the mean body weight (p = 0.008), BMI (p = 0.006), subjective stress (p = 0.004), subjective well-being (p = 0.002), optimism (p = 0.03), and physical component summary (PCS) scores of HRQOL (p = 0.04). A similar tendency was observed for the mean changes in BMI and subjective stress score by area, sex, and age. Moreover, there was a significant and negative correlation between the change in BMI and the change in PCS (p = 0.03).