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South Korea is an ageing society, where one in five people are at least 65 years old.

Industry leaders have said tens of thousands of new recruits will be needed to deliver the government's target, with the sector facing a skills shortage and ageing workforce.

Similarly to the situation in Jamaica, it objects to the proposed rules against ageing overseas.

"Every month, about 1% of their bone and muscles are going to wither away – it's accelerated ageing," Prof Bailey says.

With a population of just over 2,000, the island has an ageing demographic which is making some fear for its future.