Changing the conversation about health

International ambassadors

Dr Andrew Weil (USA) is a long standing champion of integrative medicine

in 2009.

Andy-weilAndrew Weil, physician, author, expert on medical botany, mind-body interactions and alternative medicine is to become International Ambassador to the College of Medicine, with a special interest in its Food programme.  Andrew is founder and Director of the University of Arizona Centre for Integrative Medicine, a centre of excellence that has graduated over 1,300 physicians from intensive two-year Fellowship training.

Andy was guest speaker at the College’s inaugural Food. The forgotten Medicine Conference in London in June 2016.  He has a special interest in the body’s innate capacity for healing.

The College of Medicine’s Chairman, Dr Michael Dixon, welcomes Andrew to the role, we are grateful to have such an esteemed voice as our latest International Ambassador; Andrew joins Dr Isaac Mathai (India) and Dr Kerryn Phelps (Australia).

Dr Isaac Mathai (India) is the founder of the SOUKYA holistic health centre in Bangalore

in 2009.

Dr Kerryn Phelps (Australia) is a medical practitioner and a former president of the Australian Medical Association



Rosena Johnston – Ambassador to the Far East

Rosena qualified as a chartered physiotherapist in UK in 1994, and gained her Masters degree in Sports Injury and Therapy in 2000. For ten years she worked with some of the UK’s elite sports men and women (both able bodied and disabled) travelling nationally and internationally as team physiotherapist. One highlight was Rosena’s appointment as part of UKAthletics medical team for 2000 Paralympic games in Sydney.

Rosena has worked in some renowned clinics prior to setting up her own clinic Johnston Clinic limited in SW London in 2000. During this time she trained in the Sarah Key Method which centres on understanding spinal pain. As a result Rosena practices a patient centred approach to back pain and is often the person who supports motivated clients when they wish to avoid surgical interventions. As a result Rosena’s passion for her work, she was appointed Chair of the Sarah Key Teacher Training Group to facilitate the training of the 1st cohort of teacher trainers.

Rosena’s passion and desire for providing the best patient care resulted in her being invited to the Neuromusculoskeletal faculty for the College of Medicine at its launch 6 years ago. This has involved creating links with Osteopaths, Chirpractors and Physiotherpists, organising joint seminars for all 3 professions and facilitating breakout sessions at conferences. Rosena was invited to speak at the colleges first International Conference in Bangalore in November 2013 “What To Do With An Acute Locked Back” with guest speaker Archbishop Desmond Tutu and HRH The Prince of Wales. Rosena came to Singapore in 2013 and was appointed overseas ambassador for the college.

Currently, Rosena is Team Lead and Principal physiotherapist at Changi Sports Medicine Clinic, she is sharing her knowledge and experience with the physiotherapists and Drs, facilitating Quality Review Projects and developing new services – RSWT (Radial Shockwave Therapy) and collaborating with SAF (Singapore Armed Forces) to improve service provision to the injured servicemen and women.


Prof Dean Ornish – Ambassador 

Dean Ornish, M.D., is the founder and president of the non-profit Preventive Medicine Research Institute and Clinical Professor of Medicine at the University of California in San Francisco and San Diego. He received his M.D. from the Baylor College of Medicine, was a clinical fellow in medicine at Harvard Medical School, and completed an internship and residency in internal medicine at the Massachusetts General Hospital. He earned a B.A. in Humanities summa cum laude from the University of Texas in Austin, where he gave the baccalaureate address.

For over 40 years, he has directed clinical research demonstrating, for the first time, that comprehensive lifestyle changes may begin to reverse even severe coronary heart disease, without drugs or surgery. He directed the first randomized controlled trial demonstrating that comprehensive lifestyle changes may slow, stop or reverse the progression of early- stage prostate cancer. His research showed that comprehensive lifestyle changes affect gene expression, “turning on” disease- preventing genes and “turning off” genes that promote cancer and heart disease, as well as the first controlled study showing that these lifestyle changes may begin to reverse cellular aging by lengthening telomeres, the ends of our chromosomes which regulate aging (in collaboration with Dr. Elizabeth Blackburn, awarded the Nobel Prize in Medicine & Physiology). He is currently directing the first randomized controlled trial to determine if comprehensive lifestyle changes can reverse the progression of early Alzheimer’s disease.

He is the author of seven books, all national bestsellers. UnDo It! (co- authored with Anne Ornish) was published by Random House as their lead nonfiction title in January 2019. His three main-stage talks have been viewed by almost six million people.

He was appointed by President Clinton to the White House Commission on Complementary and Alternative Medicine Policy and by President Obama to the White House Advisory Group on Prevention, Health Promotion, and Integrative and Public Health. He is also a member of The Lancet Oncology “Moonshot Commission.” He has been a member of the boards of directors of the San Francisco Food Bank and the J. Craig Venter Institute. Dr. Ornish and colleagues established a lifestyle medicine clinic at the St. Vincent de Paul Homeless Shelter in San Francisco where over 30,000 homeless people were treated.

The “Ornish diet” has been rated “#1 for Heart Health” by a panel of experts at U.S. News & World Report for eight years from 2011-2019.