There is extensive research on laughter publicly available showing vast benefits of laughter and the need for making laughter the important part of our daily life.  -  Citation:  Tremayne P, Sharma K (2019) Implementing laughter therapy to enhance the well-being of patients and nurses. Nursing Standard. doi: 10.7748/ns.2019.e11064 - Laughter and positive therapies: modern approach and practical use in medicine. - Ripoll RM1, Casado IQ.  Rev Psiquiatr Salud Ment. 2010 Jan;3(1):27-34. doi: 10.1016/S1888-9891(10)70006-9. Epub 2010 Apr 14.  -  PMID: 23017490 DOI: 10.1016/S1888-9891(10)70006-9  -  Laughter Yoga, Adults Living With Parkinson׳s Disease, and Caregivers: A Pilot Study.  -  DeCaro DS1, Constantine Brown JL2.  -  Explore (NY). 2016 May-Jun;12(3):196-9. doi: 10.1016/j.explore.2016.02.005. Epub 2016 Mar 3.  -  PMID: 27033323 DOI: 10.1016/j.explore.2016.02.005  - The effect of laughter therapy on the quality of life of nursing home residents. -  Kuru N1, Kublay G1.  -  J Clin Nurs. 2017 Nov;26(21-22):3354-3362. doi: 10.1111/jocn.13687. Epub 2017 Feb 9.  PMID: 27982486 DOI: 10.1111/jocn.13687 - [Changes in depression and loneliness after laughter therapy in institutionalized elders].  -   Quintero Á1, Henao ME1, Villamil MM1, León J1. -  Biomedica. 2015 Jan-Mar;35(1):90-100. doi: 10.1590/S0120-41572015000100012.  PMID: 26148038 DOI: 10.1590/S0120-41572015000100012 - The effect of laughter therapy on radiation dermatitis in patients with breast cancer: a single-blind prospective pilot study  -  Moonkyoo Kong,1 Sung Hee Shin,2 Eunmi Lee,3 and Eun Kyoung Yun2  Published online 2014 Nov 4. doi: 10.2147/OTT.S72973  PMCID: PMC4226447   PMID: 25395864 - Intradialytic Laughter Yoga therapy for haemodialysis patients: a pre-post intervention feasibility study.  -  Bennett PN1, Parsons T2, Ben-Moshe R3,4, Neal M5, Weinberg MK6, Gilbert K7, Ockerby C8, Rawson H9, Herbu C10, Hutchinson AM11.  -  BMC Complement Altern Med. 2015 Jun 9;15:176. doi: 10.1186/s12906-015-0705-5. - Laughter therapy as an intervention to promote psychological well-being of volunteer community care workers working with HIV-affected families  -  Irene Hatzipapas, Maretha J. Visser, and Estie Janse van Rensburg  Published online 2017 Nov 23. doi: 10.1080/17290376.2017.1402696  PMCID: PMC5706473     PMID: 29169302 - Laughter therapy as an intervention to promote psychological well-being of volunteer community care workers working with HIV-affected families.  -  Hatzipapas I1, Visser MJ2, Janse van Rensburg E3.  SAHARA J. 2017 Dec;14(1):202-212. doi: 10.1080/17290376.2017.1402696.  PMID: 29169302 PMCID: PMC5706473 DOI: 10.1080/17290376.2017.1402696 - The effects of laughter therapy on mood state and self-esteem in cancer patients undergoing radiation therapy: a randomized controlled trial.  -  Kim SH1, Kook JR, Kwon M, Son MH, Ahn SD, Kim YH.  J Altern Complement Med. 2015 Apr;21(4):217-22. doi: 10.1089/acm.2014.0152.    PMID: 25875938 DOI: 10.1089/acm.2014.0152 - [Laughter: gender differences].  -  Mora-Ripoll R1, Ubal-López R.  -  Rev Clin Esp. 2011 Jul-Aug;211(7):360-6. doi: 10.1016/j.rce.2010.10.013. Epub 2011 Apr 12.  -  PMID: 21489520 DOI: 10.1016/j.rce.2010.10.013 - Therapeutic Benefits of Laughter in Mental Health: A Theoretical Review.  -  Yim J1.  -  Tohoku J Exp Med. 2016 Jul;239(3):243-9. doi: 10.1620/tjem.239.243.  -  PMID: 27439375 DOI: 10.1620/tjem.239.243 - Homeostatic effect of laughter on diabetic cardiovascular complications: The myth turned to fact.  -  Noureldein MH1, Eid AA2.  -  Diabetes Res Clin Pract. 2018 Jan;135:111-119. doi: 10.1016/j.diabres.2017.11.014. Epub 2017 Nov 21.  -  PMID: 29162513 DOI: 10.1016/j.diabres.2017.11.014 - Therapeutic Benefits of Laughter in Mental Health: A Theoretical Review.  (Yim J. - 2016)  - Neuroendocrine and stress hormone changes during mirthful laughter.  (Berk LS, Tan SA, Fry WF, Napier BJ, Lee JW, Hubbard RW, Lewis JE, Eby WC - 1989) - The dynamics of laughter. (Davidhizar R, Bowen M -  1992) - Social laughter releases endorphins in the brain.  (University of Turku 2017) - The social life of laughter.  (Sophie Scott, Nadine Lavan, Sinead Chen, Carolyn McGettigan - 2014)  - Play doesn’t end with childhood: why adults need it too - (2014)

( - (Joan M Erikson on The importance of play in adulthood, an interview with Joan M Erikson 1902 - 1997) by Daniel Benveniste - Laughter Prescription (William B Strean - 2009) - Social laughter is correlated with an elevated pain threshold. (Dunbar RI, Baron R, Frangou A, Pearce E, van Leeuwin EJ, Stow J, Partridge G, MacDonald I, van Vogt M - 2012)  -  The therapeutic value of laughter in medicine (Mora-Ripoli R - 2010) - Effects of Laughter Therapy on Anxiety, Stress, Depression and Quality of Life in Cancer Patients (Melike Demir - 2015) - Laughter is the best medicine? A cross-sectional study of cardiovascular disease among older Japanese adults  (Kei Hayashi, Ichiro Kawachi, Tetsuya Ohira, Katsunori Kondo, Kokoro Shirai, Naoki Kondo - 2016) - Effect of laughter yoga on mood and heart rate variability in patients awaiting organ transplantation: a pilot study.  (Dolgoff-Kaspar R, Baldwin A, Johnson MS, Edling N, Sethi GK - 2012) - iplayer Radio 4 Sophie Scott on The Life Scientific (2013) - Laughter on the brain: the science behind our sniggers  (Sophie Scott 2012)

Professor Robin Dunbar - Oxford University – 14 Sept 2011 - Research 

( reveals laughter really is the best medicine (2011) - Sophie Scott from University College London (UCL) says laughter is a universally recognised social emotion, and it is physically contagious.       

Learning and Laughter – Sophie Scott

http://www.thechildrensmediaconference.co  - (2014) - LLU researcher finds that anticipating happy times may have health benefits. Lee Berk, DrPH at Loma Linda University professor - Laughter may be the best medicine for age-related memory loss (2014) 

Dr Lee Burk, co-author of the recent study conducted in Loma Linda University, California, suggested that the less stress a person has, the better their memory performance, and humour may be the key to reducing stress levels. 

National Geographic : Is Laughter the Best Medicine?

Link to Professor Robin Dunbar’s paper

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