The incidence and prevalence of diabetes mellitus is increasing worldwide. World Health Organization (WHO) estimates that more than 350 million people worldwide have diabetes mellitus. According to the Malaysian National Health Morbidity Survey (NHMS) IV 2011, the prevalence of diabetes mellitus for both known and undiagnosed cases increased from 11.6% in 2006 to 15.2% in 2011.1 Prevalence in Malaysia is in the list of top 10 countries for diabetes in the world with the current diabetes population of approximately 3 million people.2 The warning by the WHO that diabetes is on the rise in developing countries make the primary prevention of diabetes mellitus a crucial task. Many believe that it is a disease that can be prevented by appropriate...