The Queen is going to be terribly busy during the final years of her reign, writing birthday telegrams to Britain's rapidly growing number of centenarians. Her successors, it would appear, will be even busier.
There are currently 6,500 people aged 99 in the UK, which means that Her Majesty will post birthday felicitations to around 18 people every day over the coming year. But by 2047, the new monarch may have to raise the age bar – otherwise he will be penning 260 birthday telegrams every day.
A third of babies born this year are expected to survive to celebrate their 100th birthday, according to new projections by the Office of National Statistics, compared to 12 per cent of people aged 65 in 2012. In 1961, when records began, there were just 626 centenarians in the UK; there will be 455,000 by 2060.
Before panic sets in about an "age time bomb", let us not forget that this is a good news story, which began unfolding in the 20th century as killer childhood infectious diseases were largely irradicated in the developed world. It is a success of humanity that developing nations strive to replicate.
Avan Aihie Sayer, professor of geriatric medicine at the Medical Research Council unit at the University of Southampton, said: "We are living longer and healthier... yet there is such bad PR about the whole thing. Ageism is so pervasive, yet is it an odd form of discrimination because unlike racism and sexism, we are all ageing."
The fact that most babies now survive childhood is the most significant reason for massive increases in life expectancy during the first two- thirds of the last century. In addition, improvements in maternal health over the same period means we are no longer as biologically old as we used to be: we are not only dying later, but we are also developing disabling illnesses later, according to Professor Finbarr Martin, President of the British Geriatrics Society.
"The things that kill people when they are old are affected by public health measures, in particular immunisation, central heating, and great improvements in social care, which means people are more likely to recover if they become ill or disabled," said Professor Martin. "The challenge for us is to try and squeeze disability and disease into the last few years of life."
One condition that becomes substantially more likely the older we get is dementia, which affects one in 14 people over 65, one in six over 80, and one in three over 90. Research into it received a cash injection yesterday as David Cameron announced a 140 per cent increase of public funds by 2015.
Hannah Clack, from The Alzheimer's Society, said: "As we all live longer and get better at curing other conditions, the number of people with dementia is going to rise exponentially. There are already 800,000 in the UK and this will double and cost triple within a generation."
But it is not only dementia that is a concern. Our buckling health service was set up to deal with single-organ acute conditions mostly affecting middle-aged people or younger pensioners. Yet the NHS, like the social care system, is now mainly used by frail very old people with multiple conditions, who have a range of complex problems that affect their ability to function independently.
Professor Sayer said: "This is where the big buck stops for government: how to provide health and social care for frail people with complex needs when you have a system that is currently not fit for purpose."
It is, in some respects, all about the money as a rapidly ageing population means there are proportionately less taxpayers to foot the bills.
Jonathan Clifton, from the Institute for Public Policy Research think tank, said: "No solution to the funding of social care is fair or plausible without tapping into the wealth of the baby-boomers in some shape or form. We will need to find ways to release the equity pensioners have built up in their homes to help cover the cost of care, as well as encouraging the younger generations to insure themselves against future costs of care."
Michelle Mitchell, charity director of Age UK, said: "Increasing life expectancy is one of the great triumphs of medical and social progress – we now need to work to ensure that those extra years of life are as fulfilling as possible for older people. To do this we need, as a society, to jettison traditional views of what life should be after 65 without losing sight that many older people need increasing care and support in their later years."
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