Katherine Ryan’s podcast What’s My Age Again is back for season two!

More celebrities are taking the age test, including Jameela Jamil, GK Barry and Alan Davies

Published 22nd Apr 2025
Last updated 30th Sep 2025

Season two of Katherine Ryan’s chart-topping podcast ‘What’s My Age Again?’ is back to provide you with your weekly dose of laughs, surprise and insight into the world of ageing, wellness and self-discovery.

The prolific Canadian comedian and television personality is asking her celebrity friends: how old are you? How old is your body? And what do you do to stay young? The big reveal comes when they take a Glycanage blood test to find out how old they ‘really’ are.

The first season saw huge guests like Katie Price find out she had a biological age of 70, while others like Jill Scott and Adam Buxton received 50 and 22 respectively.

What’s season two about?

In the new season, we find out about a host of famous faces including Jameela Jamil, Alan Davies, Natalie Cassidy, Katie Piper and Tim Spector, while Katherine will also take another test to see if she’s improved her biological age of 77 as revealed on season one.

“The first season gave us some really eye-opening moments when finding out our guests' real biological ages,” says Katherine. We had disappointment, delight and disbelief and I still can’t believe they all willingly handed over their blood to be tested. This season I am excited to be back again with more famous friends to find out whether their lifestyle is helping or hindering them in their quest for longevity. I’ll also get the chance to take the test again to see if I can improve on my own age of 77.”

New this season will be weekly bonus episodes hosted by our resident scientist Dr Nichola Conlon, who will be answering listener’s questions about biological age and the aging process.

The first episode is out now and features influencer GK Barry - the youngest guest to appear on the podcast so far. Listen on Rayo, Apple Podcasts, Spotify, Amazon Music or wherever you get your podcasts.

Listen NOW with new episodes every Tuesday

Who will take the test this season?

GK Barry

Grace Keeling, better known as GK Barry, is a television presenter and social media influencer. You might recognise her as the host of hit podcast Saving Grace or from killing it on ‘I’m a Celebrity Get Me Out of Here’. She was also the youngest panellist on British talk show Loose Women.

On her episode of What’s My Age Again, GK explains why she wants to die at 35, her public persona and why she doesn’t worry about how she will look as she ages. You can hear the episode here.

Alan Davies

Comedian, presenter, writer and actor Alan Davies is best known for being the only permanent panellist on BBC’s QI, as well as the duffel-coat wearing magician’s assistant Jonathan Creek on the mystery drama show of the same name.

His comedy career spans 5 decades, and he’s 59 on the outside – but how old is he on the inside?

Emma Barnett

British journalist and broadcaster Emma Barnett is a powerhouse, with high-impact work that consistently hits headlines. She’s currently on the presenting team of BBC’s ‘Today’, but was previously a BBC Five Live presenter and the host of BBC Radio 4’s Woman’s Hour.

Bobby Koostra

Katherine’s bringing her husband Bobby Kootstra onto the show to take the test. He’s 42 years old but how old is he on the inside?

Natalie Cassidy

Actress, podcaster and all-round national treasure, Natalie Cassidy is best known for her role as Sonia in Eastenders, which she played on and off for more than 30 years. More recently, you might have seen her in television shows ‘Motherland’ and ‘Mandy’, or on stage in the ‘Vagina Monologues’ and ‘The Cherry Orchard’. She also published an autobiography, ‘Happy Days’.

Tim Spector

British scientist and author Tim Spector co-founded the personal nutrition app Zoe back in 2017 and has written multiple bestselling books about nutrition, the microbiome and eating well. Tim’s newest book ‘Ferment’ draws on his own cutting-edge research to demystify the world of ferments and give practical tips for buying and making fermented foods.

Jameela Jamil

The multi-talented and outspoken Jameela Jamil needs no introduction. The British actor, writer and activist shot to universal fame in her role as Tahani on ‘The Good Place’, but was recognised in the UK long before that as a presenter on Channel 4 and the BBC. First and foremost, though, she’s a passionate advocate for disability rights, LGBTQ rights, body neutrality and social justice.

Rosie Jones

Comedian and screenwriter Rosie Jones is best known for appearing on some of the country’s biggest panel shows, including ‘The Last Leg’ and ‘QI’, and for her stand up comedy shows. The latter often incorporates Rosie’s experience of living with cerebral palsy. Catch Rosie on her upcoming stand up tour ‘I Can’t Tell What She’s Staying’ and ‘Pushers,’’ a new sitcom she co-wrote.

Sandro Farmhouse

In 2022, Sandro Farmhouse won over the nation in the Great British Bake Off with his superb baking skills and charm. Today, the celebrity cake maker is hot in demand, having made showstopping cakes for Stormzy, Little Mix and Katherine herself.

Katie Piper

In 2008, author, broadcaster and philanthropist Katie Piper survived a brutal acid attack that left her with life-changing injuries. She went on to share her story in award-winning documentary ‘Katie: My Beautiful Face’ and has since become a leading supporter of survivors of burns and other disfigurement injuries through her charity The Katie Piper Foundation. In 2022, she was appointed an OBE for her services to charity and victims of disfigurement.

Sara Pascoe

Comedian, actress, presenter and writer Sara Pascoe has appeared on plenty of well-known British tv shows including ‘8 Out of 10 Cats Does Countdown,’ ‘QI’ and ‘Taskmaster. She calls herself a ‘midlife mum’ after giving birth at 40. She’s now 44 – but what does the test say?

How can I listen to season two?

Listen on Rayo, Apple Podcasts, Spotify, Amazon Music or wherever you get your podcasts.

I haven’t listened to season one, can I catch up?

Of course! You can still find season one on all the usual channels including Rayo.

How can I stay up to date?

Follow @whatsmyageagain_pod on Instagram, YouTube and TikTok for all the latest updates.

Want to take the test yourself?

If you want to try the Glycanage test for yourself, they are offering 25% off for 'What's My Age Again' listeners with the code WHATSMYAGEAGAIN25. Head to glycanage.com to redeem. Terms and conditions apply.