When it comes to maintaining that youthful luster, we have, over the years, concocted all manner of things - from cosmetics, dietary plans, and exercise regimes - to get the job done.

But unless you’ve got the actual fountain of youth in your back garden or the holy grail sitting on your mantle you’re probably plum out of luck when it comes to reversing the aging process completely.

That being said, researchers at the University of Rochester have uncovered more evidence that the key to longevity resides instead with a simple enzyme.

Vera Gorbunova, Professor of Biology and Medicine & co-director of the Rochester Aging Research Center at the University of Rochester joins Jonathan to discuss.

Dr.Ruth Freeman from the SFI & Shane Bergin, Physicist & Assistant Prof in Science Education at UCD also joined Jonathan for Newsround.