Persatuan Kajian Obesiti Malaysia or Malaysian Society for the Study of Obesity (MASSO) was registered (Bil:PPM 1102/93) with the Registrar of Society on the 15th February 1994 and was officially launched by YB Datuk Napsiah Omar on the 17th July 1994 at Padang Merbok, Kuala Lumpur. The Founding President (1994-1995) was Dato’ Dr Ismail Merican, Deputy Director General of Health Malaysia. At the 3rd AGM in 1996, Prof. Dr Mohd Ismail Noor, was elected President MASSO and it’s Secretariat moved from Servier Ltd (Malaysia), to the Department of Nutrition and Deitetics, UKM. In 1998, MASSO changed its name to 'Malaysian Association for the Study of Obesity (MASO)' to be in line with its international affiliate the International Association for the Study of Obesity (IASO) and other bodies around the world.
MASO members mainly comprise of nutritionists, dieticians, clinical psychologists, endocrinologists, medical doctors and other related health professionals. MASO strive to enhance the understanding of obesity including causes, manifestations, prevention and management principles through various local and international collaborative studies.
MASO organises Scientific Conferences once every 2 years, Workshops and International Conferences such as the 2nd Asia-Oceania Conference on Obesity (AOCO) in 2003 and Asia Pacific Obesity Conclave (APOC) in 2007. They also run weight management camps for the general public and institutions. MASO is also represented in several MOH health promotion activities and are active members in several MOH Committees including the National Coordinating Committee on Food and Nutrition (NCCFN) since 1996 and collaborated with other professional bodies namely the Nutrition Society of Malaysia and Malaysian Dietitians Association to organise Nutrition Month Malaysia since 2002 and various other scientific events.
As a professional body, MASO is affiliated with the International Association for the Study of Obesity (IASO) since 1998, a Founding Member of the Asia-Oceania Association for the Study of Obesity (AOASO) since 1998 and Confederation of Scientific and Technological Associations Malaysia (COSTAM) in 2000. MASO's greatest achievement thus far is the success in their bid to jointly organise the International Congress on Obesity 2014 with IASO.