A journey through time: The history of public health and wellbeing in Sri Lanka

The history of public health in Sri Lanka is one of extraordinary continuity, journey spanning more than two millennia, woven through with human endeavour, political commitment, scientific innovation and, above all, an enduring dedication to the health and wellbeing of its people.  
This manuscript traces that journey from the ancient kingdoms of Anuradhapura and Polonnaruwa, where hospital complexes, sanitation systems and irrigation networks embodied a remarkably holistic understanding of health – one that embraced the physical, mental, social, spiritual and environmental dimensions of human flourishing- to the complex, multi-layered public health landscape of our own times. Along the way, it pauses at the contributions of Ayurveda, indigenous healing traditions and community-based care; at the colonial periods contested but consequential legacy of health legislation, epidemiological surveillance and vaccination and at the landmark establishment of Asia’s first Health Unit at Kalutara in 1936, which gave birth to the preventive health infrastructure that sustains us today. 
The post-independence deceased brought bold commitments – free healthcare, free education a tax-funded public health system that transformed population health outcomes at a fraction of the cost achieved elsewhere. Sri Lanka eliminated disease, educed maternal and infant mortality, sustained immunization coverage and built primary care networks that reached the furthest corners of a geographically diverse island. These were not accidents of geography or fortune, they were the fruits of sustained political will, a dedicated health workforce, and communities that trusted and engaged with their health system. Yet, no honest reading of this history can avoid the challenges gathering at the horizon, non-communicable diseases, an ageing population mental health, antimicrobial resistance, climate change and emerging infections demand the same qualities that served us in the past – scientific rigour, equity of access, multisectoral collaboration and the courage to innovate. 
At the centenary celebrations of community health in Sri Lanka, this refection on two thousand years of public health history is offered not merely as a record of the past, but as a compass for the future – a reminder of who we are, what we have built and what we owe to those who will come after us.