This is not the first study to explore the healing force of humor. In 2006 researchers led by Lee Berk and Stanley A. Tan at Loma Linda University in Loma Linda, California, found that two hormones — beta-endorphins (which alleviate depression) and human growth hormone (HGH, which helps with immunity) — increased by 27 and 87 percent respectively when volunteers anticipated watching a humorous video. Simply anticipating laughter boosted health-protecting hormones and chemicals.
Research led by Swiss neuroscientist Pascal Vrticka and his U.S. colleagues at Stanford University has found that, among other things, humor plays a key role in psychological health. According to the study, recently published in the journal Nature Reviews Neuroscience, adults with psychological disorders such as autism or depression often have a modified humor processing activity and respond less evidently to humor than people who do not have these disorders. Vrticka believes that a better understanding how the brain processes humor could lead to the development of new treatments.