One in five to live to 100, but do you want to?
30 December 2010 Last updated at 08:19 GMT
Nearly one in five people currently in the UK will live to see their 100th birthday, according to the government.
The Department for Work and Pensions (DWP) said its figures suggested 10 million people - 17% of the population - would become centenarians.
Ros Altman, Director General of the Saga Group and a former government advisor on pensions, spoke to the BBC about the benefits and disadvantages of living to 100.