| http://www.w3.org/ns/prov#value | - Dr. Lee S. Berk, at Loma Linda University School of Medicine and Public Health in California, and endocrinologist Stanley Tan, studied various groups of adults and found that laughter also stimulates our endocrine system and the pituitary gland, which in turn, stimulates release of endorphins and enkephalins, natural painkillers that are chemical cousins to opiates such as morphine and heroin.
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