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PODCAST

Sliced Bread

Sliced Bread is the series that investigates the latest ad-hyped products and trending fads promising to make us healthier, happier and greener. Are they really "the best thing since sliced bread"? Science presenter Greg Foot finds out.Greg speaks to experts on a bunk-busting mission to test the latest consumer trends chosen by listeners. Do they live up to the hype? Or are they just marketing BS?Greg chats to the experts, dives into the data, performs tests and crunches the numbers before putting

health & fitness

All Episodes

36:41

Collagen (2026 update)

Sliced Bread ·

2026/04/09

What's the latest on Collagen?The new series of Sliced Bread kicks off with an update on one of the wonder products most-requested by listeners. Presenter Greg Foot first looked at Collagen in 2022 and returns to the subject to find out what has changed in the scientific landscape since then. Could there be new evidence that it really can do what the manufacturers claim: rejuvenate skin, nails and hair - and even help with joint and bone health? To find out, Greg is rejoined by the expert from that

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27:54

Dough - Food

Sliced Bread ·

2026/04/02

What will the food of the future look like? Greg Foot finds out.Greg Foot, host of BBC Radio 4’s Sliced Bread, returns with Dough — the series exploring the rise of future wonder products that could transform the way we live.Each episode examines the emerging technologies and innovations poised to shape tomorrow’s world. Greg speaks with experts and entrepreneurs to uncover the trends influencing how today’s everyday essentials might evolve, before a leading futurist offers their predictions for

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33:12

Dough - Eyewear

Sliced Bread ·

2026/03/26

Could smart glasses with built-in video cameras become widely accepted?Greg Foot, host of BBC Radio 4's 'Sliced Bread' brings you 'Dough', examining the rise of future wonder products.Greg is joined by experts, entrepreneurs and industry innovators to discuss the trends we're seeing today and where they may lead us tomorrow, before a leading futurist offers their predictions on what life might be like within five, ten and fifty years.This time we’re looking at the future of eyewear - asking whether

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24:42

Dough - The Office

Sliced Bread ·

2026/03/19

What will the office be like in future? Greg Foot, host of BBC Radio 4's 'Sliced Bread' brings you 'Dough', examining the rise of future wonder products.Greg is joined by experts, entrepreneurs and industry innovators to discuss the trends we're seeing today and where they may lead us tomorrow, before a leading futurist offers their predictions on what life might be like within five, ten and fifty years.This time we’re looking at the future of the office - asking whether in years to come, we’ll even

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30:15

Dough - Trains

Sliced Bread ·

2026/03/12

Could ticketless travel and satellite connectivity be coming to our rail network? Greg Foot examines the rise of future wonder products.He's joined by experts, entrepreneurs and industry innovators to discuss the trends we're seeing today and where they may lead us tomorrow, before a leading futurist offers their predictions on what life might be like within five, ten and fifty years.In this episode Greg hears how renationalisation, digital signalling, satellite connections, ticketless technology

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26:36

Dough - Mobile Phones

Sliced Bread ·

2026/03/05

What will mobile phones be like in future? Greg Foot investigatesGreg Foot, host of the BBC Radio 4 show 'Sliced Bread', brings you 'Dough'.Each episode explores future wonder products that might rise to success and redefine our lives.Experts and entrepreneurs discuss the trends shaping what today's everyday technology may look like tomorrow, before a leading futurist offers their predictions on what life might be like within five, ten and fifty years.This time we’re looking at the future of mobile

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26:41

Baby Sleep Products

Sliced Bread ·

2026/02/26

Sleep deprived parents everywhere are tempted to reach for anything that might help them get a little more sleep overnight – but can products promising to encourage babies to snooze for longer – really do that? And is there any science to back it up?That is exactly what tired Dad-of-three Dave wanted to know – and whether there were any future implications from using these gadgets, docks, blinds and sleep bags? New Dad Greg Foot speaks to Director of the Durham Infancy and Sleep Centre Professor

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30:22

Kitchen Knives and Sharpeners

Sliced Bread ·

2026/02/19

Which knife is best for the kitchen and how do you keep it sharp?After buying various knives over the years that ended up blunt, listener Susan is looking for one that will last. She's seen an array of different types and materials: Damascus steel, Japanese Gyuto knives, as well as alloys and additions that promise a sharper edge. They vary hugely in price - anything from £50 to £1,000. And if you do invest, how do you keep a knife sharp?To cut through the marketing BS, presenter Greg Foot is joined

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27:47

VPNs

Sliced Bread ·

2026/02/12

Do you really need a VPN?Listener Andrew has seen and heard lots of adverts for Virtual Private Networks (VPNs) and wants to know if they'll beef up the security on his computer. Will they provide extra protection from malware or hackers?To get the answers, presenter Greg Foot is joined in the studio by Professor Victoria Baines, fellow of the Chartered Institute for IT.All our investigations start with YOUR suggestions. If you have seen a wonder product promising to make you happier, healthier or

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25:10

Kefir

Sliced Bread ·

2026/02/05

Listener Amanda was Kefir curious, and got in touch with Sliced Bread to ask if the Kefir she was consuming for breakfast every day – was really having an impact on her health, cognitive function, and her gut?She wasn’t the only person to get in touch about kefir either, with others saying they keep seeing the benefits of fermented foods crowed about on social media. Greg Foot talks to head of the Food Biosciences department at the Irish National Research Body Teagasc, to get to the bottom of

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31:28

Testosterone Replacement Therapy

Sliced Bread ·

2026/01/29

Can taking testosterone help with low libido and energy?It's all over social media and is often touted by celebs - both male and female - but is testosterone replacement therapy the answer to listener Clive's low energy levels? Clive got in touch after sending off for a blood test with an online health firm which showed he might have low testosterone and could be a candidate for therapy. But to buy it privately isn't cheap and once started, is a lifelong commitment. So is it worth the

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24:32

Dark Chocolate

Sliced Bread ·

2026/01/22

Listener Jenny, who enjoys a 90% cocoa bar from time to time, got in touch to ask if some of the reports that dark chocolate can have a positive effect on things like circulation and mood - have any truth behind them? But Jenny also told Sliced Bread that since she read reports that heavy metals such as lead and cadmium could be in dark chocolate - she's been unable to enjoy her regular bar, until she knows it's safe to eat!Each episode Greg investigates the latest ad-hyped products and trending

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35:26

Weight-loss Injections

Sliced Bread ·

2026/01/15

Is it ok to stay on weight loss injections?They have been nothing short of a pharmaceutical phenomenon. But for people like listener Lynn who've had huge success on weight loss drugs like Mounjaro, the question now arises about the implications of using them long-term. Could there be a 'maintenance' dose that would potentially allow for use over many years, or even a lifetime? And as scientists study the data, are other benefits emerging that go beyond just losing weight that could burnish their

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24:45

Toast - Farepak's Christmas Hampers

Sliced Bread ·

2025/12/25

What led to the collapse of the Christmas savings club Farepak? The BBC Business journalist, Sean Farrington, investigates with the entrepreneur, Sam White, alongside him.It's our Christmas special and we're turning the clock back to the mid 1960s…. and looking at a business which started from humble beginnings in a Peckham butcher's shop, and went on to change Christmas for tens of thousands of families all over the UK.So, why did Farepak end up toast?Sean interviews:-David Goodhart - founder

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24:54

Toast - C&A's UK Stores

Sliced Bread ·

2025/12/18

The fashion chain C&A continues to thrive elsewhere so why did it shut all its UK stores? The BBC Business journalist, Sean Farrington, investigates how they ended up toast, in the company of resident business expert and entrepreneur, Sam White.C&A used to be one of the biggest fashion retailers on the UK's high streets until a shock decision in 2000 led to the stores' sudden closure.To help explain what happened, Sean and Sam delve into the BBC archives and hear from expert guests including

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24:42

Toast - Skype

Sliced Bread ·

2025/12/11

Why did Skype fall out of favour in a world of global video calls?The BBC Business journalist, Sean Farrington, investigates with the entrepreneur, Sam White, alongside him.Sam never knows what's coming so, at the end of every episode of Toast, she gives her off-the-cuff and authentic professional opinions on why a brand disappeared based on what she has just heard and her own business knowhow. In this episode, we learn how Skype worked by using Voice Over Internet Protocol to send audio and video

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24:39

Toast - Dasani Water

Sliced Bread ·

2025/12/04

Dasani water, a bottled water from Coca-Cola, proved a big hit in the U.S.A so why did it last for less than 6 weeks in the UK?The BBC Business journalist, Sean Farrington, investigates how it ended up toast, in the company of resident business expert and entrepreneur, Sam White.In the early 2000s, Coca-Cola had entered the growing bottled water market and was hoping to turn its hit new brand in America into a global sensation. But shortly after Dasani water was launched in the UK, things quickly

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35:15

Toast - BlackBerry Smartphones

Sliced Bread ·

2025/11/27

How did the company behind the revolutionary BlackBerry smartphone lose its grip on the handset market?The BBC Business journalist, Sean Farrington, investigates with special guest, Sir Stephen Fry, who has remained 'faithful' to the BlackBerry brand. Alongside them is the entrepreneur, Sam White, who at the end of the show has to reach her own conclusions on why BlackBerry handsets disappeared, based only on what she has just heard and her own business acumen. The first BlackBerry device freed

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43:19

The Sliced Bread Christmas List 2025

Sliced Bread ·

2025/11/20

The team has gone through 30 episodes over the past year, and carved out five potential present worthy products that may well be heading down a chimney to you this Christmas. (We wanted to give you plenty of time to include them in your letters to Santa.) Greg Foot will share with you the key points from experts we’ve spoken to on Nail Polish & Gel Nails, Chopping Boards, Lip Balm, Smart Scales, and Sleep headbands. (The information in this episode was correct at the time of recording.) And as

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25:25

Cough Medicines

Sliced Bread ·

2025/11/13

Are cough medicines any better than just taking honey and lemon?When Listener Sally sent in a croaky voicenote to our Sliced Bread Whatsapp number (07543 306807 - put us in your contacts!) we knew we had to tackle this one. Sally didn't think the medicine she used for her cough did very much, so she joined presenter Greg Foot and Jacky Smith, Professor in Respiratory Medicine at the University of Manchester, to get some answers.Each episode Greg investigates the latest ad-hyped products and trending

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