In the Yamagata study, individuals who laughed more than once a week had lower risk of cardiovascular disease and mortality.11 Similar results are available for persons with diabetes.12 Apart from end points such as cardiovascular disease, laughter also favourably influences softer end points like self - compassion13 and promotes resolution of hyperglycaemia.14 Results suggest that people with either type of diabetes are more inclined toward self-enhancing humour, less inclined toward aggressive humour, and score better on self-defeating humour.
Trong nghiên cứu của Yamagata, những người cười nhiều hơn một lần một tuần có nguy cơ mắc bệnh tim mạch ít hơn và tỷ lệ tử vong thấp hơn.