Rapid advances in medical technology have prompted predictions that by 2040, lifespans will increase by one year for every two years that pass. Obviously this is good news if the extra years are spent in good health with a good quality of life. The downside of course is that older people work less and are likely to need much higher spending on healthcare.
Demographic predictions show a rapid increase in people aged 70 over all over the world. This will be accompanied by a fall in the working age population, meaning fewer people working to pay for the care of a rapidly increasing retired and frail elderly population. After your 70th birthday, you will use 90% of the medical resources you will use in your life.
This will be a major problem for governments who will be receiving less income in tax receipts but will be spending much more to look after their elderly population. This will lead to much higher spending on healthcare. The US Congressional Budget Office estimated that in 2015 spending on every aspect of healthcare was $3 trillion. By 2025, just nine years from now, they estimated this will be $5.4 trillion, an increase of 80% in just ten years.