5/5. The NHS is under huge strain as it struggles to cope with an ageing population and illnesses caused by unhealthy lifestyles on top of increasingly expensive drugs, procedures and treatments. It's an unsustainable situation, says former NHS chief executive Nigel Crisp, and requires a complete...

4/5. In 1900 about 4% of the population was aged over 65 - now it is over 20%. And within the foreseeable future we can expect most people to live to the age of 90 . This, says Professor John Ashton of the Faculty of Public Health, means we need big changes to how older people live - especially...