Singapore has one of the best healthcare systems in the world, along with some of the healthiest citizens. But how is the healthcare system performing in terms of mental health? The recently released Singapore Mental Healthy Study conducted by the Institute of Mental Health, gave us important insights. However, it is also important to consider mental illness in Singapore through a historical and global lens to get a clearer understanding of how Singapore's mental illness landscape is evolving. Our study aims to answer this issue by focusing on what kind of mental illness is most prevalent in Singaporeans and how healthcare access and mental illness prevalence rates compare internationally and how mental healthcare has changed in Singapore over the years.