Hello, this is the Global News podcast from the BBC World Service.

I'm Valerie Sanderson with your weekly bonus from The Global Story,

which brings you a single story with depth and insight from the BBC's best journalists.

There's a new episode every weekday.

Just search for the global story wherever you get your pods.

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a single episode. Here's my colleague Lucy Hawking's.

For thousands of years, people have dreamt of and searched for the Fountain of Youth.

It may have alluded the ancient Greeks in 16th century

Spanish explorers, and in the 20th century, the idea of turning back the clock might have been

resigned to science fiction. In recent years, though, scientists have slowly but surely been

understanding more about how our bodies age at a cellular level. And there's increasing evidence that some drugs might be able to reverse that process,

giving humans longer and healthier lives than ever before.

What's more, you might already know people taking some of these drugs.

So could we really drink from the fountain of youth in our lifetime?

With me today, hope not to crush all of our dreams, is Dr Andrew Steele,

a scientist, campaigner and author of the book, Ageless,

The New Science of Getting Older Without Getting Old.

Good to have you with us, Andrew.

Hey, how you doing? Andrew,

I'd love to know when you meet people for the very first time and you say to them, my work focuses on ageing. What sort of questions do they ask you? All kinds of things. I think one of the most

popular is obviously, what's the magic pill? If you got one for me, where can I sign up for the

...