Stop, rewind: the scientists slowing the ageing process

Scientists are slowly unlocking the secrets of ageing, and some suggest treatments may soon be at hand to slow or even reverse the ageing process.

But what can science really achieve, and what are the dangers of meddling with our biological clocks?

Could such treatments induce cancers in humans, for example, and what about the world's burgeoning population and the West's "pension time bomb"?

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