Most babies born in the past few years will live to be 100 if current trends continue, experts say.
And people could be living not only longer, but better, according to doctors writing in the Lancet medical journal, who say that most evidence shows the under-85s are tending to remain more capable and mobile than before. They have more chronic illnesses, such as cancers and heart conditions, but people survive them because they are diagnosed earlier and get better treatment.
Professor Kaare Christensen and colleagues at the ageing research centre at the University of Southern Denmark calculate that at least half the babies born in the UK in the year 2000 will reach their 100th birthday. Life expectancy is increasing so fast that half the babies born in 2007 will live to be at least 103, while half the Japanese babies born in the same year will reach the age of 107.
南丹麦大学（University of Southern Denmark）衰老研究中心Kaare Christensen教授和他同事，通过计算后提出，英国2000年出生的小孩至少有一半能活到100岁。人的平均寿命在加速增加，可以推算出，2007年出生的小孩有一半至少可活到103岁，日本同年出生的小孩最少有一半可达到107岁。
The bad news is that the ageing populations of rich countries such as the UK threaten to unbalance the population. It "poses severe challenges for the traditional social welfare state," write Christensen and colleagues.
But they have a radical solution: young and old should work fewer hours a week. Over a lifetime, we would all spend the same total amount of time at work as we do now, but spread out over the years.