A major new Series on health and ageing, published in "The Lancet," warns that unless health systems find effective strategies to address the problems faced by an ageing world population, the growing burden of chronic disease will greatly affect the quality of life of older people. As people across the world live longer, soaring levels of chronic illness and diminished wellbeing are poised to become a major global public health challenge.
Worldwide, life expectancy of older people continues to rise. By 2020, for the first time in history, the number of people aged 60 years and older will outnumber children younger than 5 years. By 2050, the world’s population aged 60 years and older is expected to total 2 billion, up from 841 million today. Eighty per cent of these older people will be living in low-income and middle-income countries.