People are living longer than ever before. Globally and in the Western Pacific Region, the proportion of people aged 60 years and over is growing faster than any other age group. Some countries are already addressing population ageing and finding ways to meet the health needs of older people; others face a narrow window of time to prepare.All countries are exploring ways to help older people retain their health, functional capacity, social participation and security. Population ageing brings new challenges to health policy and health systems, but also new opportunities and areas for action. This explores these challenges and areas of action.