Sliced Bread

What really helps to treat acne? Listener Louise got in touch about a subject that affects thousands of people both physically and emotionally. She experienced acne from her teens into adulthood; and now with a daughter herself, is all too aware of the pressures facing young people through social media. She's keen to find out which of the vast array of over-the-counter treatments work and which ingredients in particular are effective in treating acne. To get the answers, presenter Greg Foot is joined by consultant dermatologist Dr Emma Wedgeworth and founder of the 'Clear' skincare app, Ahana Banarjee. We're back with a new series of Sliced Bread and are hungry for your suggestions of wonder products to put through the evidence mill. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. PRESENTER: GREG FOOT PRODUCERS: SIMON HOBAN AND GREG FOOT

Are self-checkouts here to stay or will we soon be paying without scanning or stopping? Greg Foot examines the future of supermarkets and considers wonder products and trends that might rise to success. Greg is joined by experts and entrepreneurs to discuss what is shaping today's everyday technology and what it may look like tomorrow, before the futurist Tom Cheesewright offers his predictions on what supermarkets might be like within five, ten and fifty years. In this episode: -David McIntosh - chief connected stores officer at Instacart which supplies smart trolleys to supermarkets that scan and weigh goods as they are dropped in and display a running basket total. -Nick Carroll - principal strategist for retail at the research insights company Mintel where he helps the UK's biggest retailers understand what's coming next -Anders Eriksson - chief executive of Swegreen which supplies the kit and support for supermarkets to grow their own fruit and vegetables inside their stores Among the topics up for…

Could advances in AI help us have conversations with our pets? Will a raccoon or a robot become the pet of the future? Or will or pets be sharing a seat beside us on the plane as we jet off for our next holiday? In this episode of Dough Greg Foot looks at pets and examines the rise of future wonder products. He's joined by experts, entrepreneurs and industry innovators to discuss the trends we'e 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 technology, food innovations and even changes in aviation might transform the future for our pets. With him is the futurist Tracey Follows and guests including; -Professor Daniel Mills: Professor of Veterinary Behavioural Medicine at Lincoln University -Dr Samantha Butler-Davies, MRCVS, veterinary director at Pets at Home and Vets for Pets. -Professor Clara Mancini: Professor of Animal-Computer Interaction and Head of the…

Is streaming really killing off the big screen? Greg Foot examines the future of cinemas and considers wonder products and trends that might rise to success. Greg is joined by experts and entrepreneurs to discuss what is shaping today's everyday technology and what it may look like tomorrow, before the futurist Tom Cheesewright offers his predictions on what cinemas might be like within five, ten and fifty years. In this episode: - Tim Richards - the founder and CEO of Vue cinemas - Patrick von Sychowski - known in the trade as "the Cinema Guru" he's a writer and blogger who works for CinemaNext, the largest installer and upgrader of cinemas across Europe. - Alexis Scalice - Vice President for Business Development & Entertainment at Cosm which is pioneering 'shared reality' cinematic experiences in large entertainment domes Among the questions up for consideration: Why are there more cinemas screenings of films from the past? Why are plastic popcorn buckets becoming collectors' items? And could the cinema of…

Could weight-loss jabs make gyms less relevant? Greg Foot examines the future of the fitness sector and considers wonder products and trends that might rise to success. Greg is joined by experts and entrepreneurs to discuss what is shaping today's everyday technology and what it may look like tomorrow, before the futurist Tracey Follows offers her predictions on what gyms might be like within five, ten and fifty years. In this episode: Rebecca Passmore - chief operating officer of PureGym Cameron Saunders - chief executive of ukactive Varun Bhanot - co-founder and CEO of Magic AI Among the questions for consideration: Why are gyms becoming more popular? What might the training equipment of tomorrow look like? Will AI-instructors replace personal trainers? Produced by Jon Douglas. Dough is an Audio North production for BBC Radio 4 and BBC Sounds.

Could cash be losing its crown as digital money gains ground? Greg Foot looks at money and examines the rise of the wonder products and technologies emerging across the financial sector. 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 digital wallets, AI, cryptocurrencies and central bank digital currencies could reshape the way we earn, spend and save, and asks whether the future of money will be more convenient, more inclusive, or come at the cost of privacy and control. With him is the futurist Tom Cheesewright and guests including: Jack Leslie and Rupal Patel – Bank of England economists and co-authors of Money: The Inside Story Frane Maroević – Director General of the International Currency Association (ICA) Diane Ayres – Vice President and Client Director at Visa, London…

Is it OK to take experimental peptides like the Wolverine Stack? These are what bodybuilders, longevity gurus, and online influencers are all talking about: experimental peptides. They're chemicals that you can buy online, in packages with names like the Wolverine Stack or the Glow Stack. The websites say "for research purposes only" but talk about their supposed benefits for wound healing and de-aging, and lots of people have been injecting them in a bid to heal faster and look younger. Sliced Bread listener Steve is excited - and has even tried them for himself - but listener Sophie is worried. Both of them are asking whether there's any evidence behind the fantastic claims. To find out the truth, Greg Foot is joined by Dr Andrew Steele, longevity scientist and Director of the Longevity Initiative. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our…

Pods, liquids and powders: which laundry detergent really cleans up? A trip down the laundry aisle can leave you faced with a welter of confusing marketing claims. From stain-busting formulas and lower-temperature washes to eco-friendly promises, every detergent seems to offer cleaner clothes, lower energy use and a lighter environmental footprint. Listener Rosanna came to Sliced Bread for help making sense of it all. She wants to know what really separates bio from non-bio detergents, whether pods, liquids and powders perform differently and if eco brands live up to their sustainability claims. To get the answers, Greg is joined by Professor Steven Abbott, Fellow of the Royal Society of Chemistry and an expert in cleaning agents. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: JULIA RAVEY PRODUCERS: SIMON…

What makes the perfect pillow? Nothing saying ‘waking up on the wrong side of the bed’ like a crick in your neck. With up to 70% of us experiencing neck pain at some point in our lives, sleeping in a dodgy position can lead to days of discomfort. And pillows might be part of the problem... Listener Angela has a frozen shoulder, and hoped a new pillow might provide a more comfortable night’s sleep. But with so many options to chose from, which one should she buy? One advertised for her preferred sleeping position? Soft or firm? And what about material: feathers, foam or fibre? She's asked Sliced Bread to help pick out the facts from the marketing fluff. Physiotherapist Dr Chris McCarthy from Manchester School of Physiotherapy joins presenter Greg Foot to discuss the most important factors in selecting the perfect pillow, personalised to you - plus, how to save your sleep when faced with a floppy hotel pillow... All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product…

What's the best way to keep your home cool? As heatwave after heatwave pushes temperatures higher across the UK and Europe, air conditioning has become a serious topic. Listener Rachel is one of many people who have turned to a portable air conditioner for relief. About the size of a dehumidifier, these units cool a room by drawing in warm air, chilling it, and venting the excess heat outside through a hose, usually attached to a window. But with hotter summers forecast, Rachel is wondering whether it's worth investing in a fixed, or "split", air conditioning system instead. These systems use an indoor unit paired with an outdoor condenser and are increasingly common in homes across Europe. She wants to know: how much do they cost to buy and run? Are they difficult to install? And how noisy are they in everyday use? Then there are the cheaper "air coolers" that claim to lower temperatures by blowing air over cold water or ice. Do they genuinely cool a room, or are they simply fans with clever marketing? To…

Can you really learn a new language from apps like Duolingo? Sliced Bread listener Nathan Phelps has been teaching himself Japanese. He’s tried textbooks, tutors, and crucially, language apps on his phone - and he came to us because he’s seen these apps claiming to be “backed by science” to help you “learn a new language, fast”. More recently he’s even seen apps boast about “AI powered features” to help you practice your language skills, available on premium subscriptions. Nathan wants to know: are language apps an effective way to learn? How do they compare to other ways of learning? And can AI really supercharge your language skills? To find out more, presenter Greg Foot is joined by Professor Elizabeth Wonnacott, Professor of Language Science at the University of Oxford and Director of the Language Learning Lab in their Department of Education. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at…

Which is the most hygienic for cleaning your kitchen? Most of us will be familiar with the cheap packs of coloured kitchen sponges with the abrasive tops, used for washing dishes and wiping surfaces. But could they be harbouring a host of bacterial baddies? Listener Caroline wants to know as she uses them regularly and even goes as far as running them through the washing machine to keep them cleaner for longer! Does that really work? And are there concerns about these sponges releasing microplastics? Would alternatives like cloths or brushes be a better option? To answer all of these questions, presenter Greg Foot is joined by Markus Egert, Professor of Microbiology and Hygiene at Furtwangen University in southwest Germany and one of the authors of a major study into the hygiene of sponges; and Vilde Snekkevik, research scientist at the Norwegian Institute for Water Research in Oslo. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier,…

Can robotic lawnmowers save you time without hassling hedgehogs? Listener Pat has seen adverts for robotic lawnmowers and has lots of questions: Do they cut effectively? How do they manage with edges and flower borders? And what about avoiding wildlife and other objects in the garden? To find out, presenter Greg Foot is joined by BBC Gardeners' World magazine's tech reviewer Harry Duncton, alongside Dr Sophie Lund-Rasmussen (aka 'Dr Hedgehog'), who has carried out research into the dangers to hedgehogs posed by robotic lawnmowers. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: JULIA RAVEY PRODUCERS: SIMON HOBAN AND GREG FOOT

Can a test tell you what's living inside your gut - and what to do about it? That's what listener Pete Mace asked us, kicking off a brand new series of Sliced Bread! He's seen 'gut microbiome tests' advertised by ZOE, Randox Health and others. They promise to tell you about the bacteria - and other bugs - currently making your intestines their home. Many also claim they'll use this information to make personalised diet recommendations, showing you exactly what you should and shouldn't eat to nurture the right bugs and improve your health. Pete wants to know: what can these tests really tell you? And can they really provide a diet tailored precisely to your personal wellbeing? To find out more, presenter Greg Foot is joined by Dr Nick Ilott, Senior Researcher and lead Bioinformatician at the Oxford Centre for Microbiome Studies; and Dr Fred Warren, group leader at the Quadram Institute who researches how gut microbes interact with food. All of our episodes start with YOUR suggestions. If you’ve seen an ad,…

Is it ok to store food in plastic containers? That's the question put by listener Joe Tattersall in this, the last episode in the current series of 'Sliced Bread'. Joe's noticed scuffs and abrasions on his reusable plastic containers and is concerned about whether that increases the risk of 'chemical leaching' into his food, or ingesting microplastics. He's keen to know if alternatives like glass, silicon, or metal containers could better for our health, as well as for the planet. And what about putting them in the microwave to heat food, using them to freeze food after batch-cooking, or putting them in the dishwasher to clean? To find out more, presenter Greg Foot is joined by Dr Stephanie Wright, Senior Lecturer in Environmental Toxicology at Imperial College London; and Jane Muncke, Managing Director and Chief Scientific Officer at the Food Packaging Forum. We're taking a break to prepare another batch of Sliced Bread but we're as hungry as ever for your suggestions of wonder products to investigate.…

What kind of cat litter is best for cats, owners and the environment? After we looked at dog poo bags for an episode, it's only right that we answer some questions for the cat lovers, around cat litter. Listener Ella got in touch to ask about it, after adopting her Sphynx indoor cat, Mr. Big (short for Mr. Bigglesworth). She wanted to know: what is the most absorbent cat litter that doesn't smell, doesn't cause problems for her floors when kicked out of the litter tray and might be better for the environment? Greg Foot is joined by veterinary surgeon and author of the book What's My Cat Thinking? Dr. Jo Lewis – as well as engineer and former managing director of pet care company Bob Martin, Savi Madden – to get the inside scoop. All of our episodes start with your suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number, 07543 306807. Researcher: Phil Sansom Producers: Kate…

Do ergonomic devices like split keyboards and vertical mice help with comfort and health? If you're a heavy computer user there are an increasing variety of weird and wonderful options to help improve your comfort and reduce the risk of aches and pains associated with 'Repetitive Strain Injury' (RSI). Listener Tim is curious whether ergonomic tools—such as split keyboards, alternative layouts, or vertical mice—could optimise his professional setup as a software engineer. To find out, presenter Greg Foot does a deep-dive into the evidence alongside Nichola Adams, from the Chartered Institute of Ergonomics and Human Factors; and Ben Vallack, who runs a YouTube channel all about workflow and design. And if you're interested in this topic, we have a companion episode on Standing Desks - available along with all our other episodes on BBC Sounds. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at…

Can Vibration Plates help with fitness, bone density, and even lymphatic drainage? They've been around for a while but vibration plates seem to be having another 'moment'. Originally touted as a piece of fitness kit for the gym or home, the latest ads on social media seem to be promoting claims around benefits to bone density and lymphatic drainage. Listeners Natasha and Steve got in touch wanting to know whether all this could really be true of a single wonder product! To find out, presenter Greg Foot is joined by Dr Claire Minshull, a sports rehabilitation expert, and Professor Neil Mansfield, author of the book 'Human Response to Vibration'. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

Can Intense Pulsed Light devices really "zap" away your unwanted hair? You may have seen IPL devices advertised on social media - that promise painless hair removal using light to "zap" away body hair. Listener Karen got in touch to ask if these "Zappers" could possibly free her from having to shave her legs in the summer? How are they supposed to work, are they safe to use, and is it worth the investing in one? To find out, Greg Foot is joined by Dr Gill Westgate, a skin and hair biologist and honorary visiting lecturer at the University of Bradford. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH AND GREG FOOT

Are infrared saunas as effective as traditional ones? If you've ever sat sweating on a wooden bench in a traditional ('Finnish') sauna wondering if there was an easier way, could infrared be the answer? Infrared saunas work at lower temperatures, ostensibly making it easier to stay in there for longer. Listener Paul got in touch after trying one and wants to know if infrared saunas give you the same purported benefits as traditional ones. Those claims include: improved cardiovascular health, weight loss, longevity and even benefits to mental health and depression. But what's the evidence and does it amount to a load of hot air? To get the answers, Greg Foot is joined by Professor Chris Minson, an expert in the effects of heat on the body who's carried out research on infrared saunas. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number,…

Almost everyone is guilty of fiddling with their ears, especially if they can feel a build-up of earwax in there. But what actually works to get rid of it, and should we be messing with them in the first place? Listener Martin got in touch after finding out his earwax build-up was returning - and wanted to know if drops alone would solve his problem, or if he needed to seek professional help to remove it? Greg Foot speaks to professor of Audiology at Manchester University, NIHR senior Investigator and former chairman of the British Society of Audiology, Kevin Munro - to find out. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCER: KATE HOLDSWORTH & GREG FOOT

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 original episode four years ago, dermatologist Dr Emma Wedgeworth, alongside Professor Jayne Tierney from University College London who specialises in reviewing evidence. Together they do a deep-dive on the latest science, including a new study from one of the brands featured in 2022, Absolute Collagen. Does it stand up to scrutiny? If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number,…

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 life five, ten and fifty years from now. This episode explores how our food choices could change as the climate becomes hotter and more volatile. Are we heading towards a menu built around ancient grains, 3D‑printed dishes and AI‑tailored nutrition plans? And where does lab‑grown meat sit — both in terms of public appetite and the rules needed to get it on our plates? Alongside Greg, tucking in to a taste of the future, is futurist Tom Cheesewright, joined by expert guests including: - Karina Zimerfeld, the Global…

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 smart glasses with built-in video cameras might see past previous failures to become widely accepted? And whether you might soon be wearing smart contact lenses that can not only display websites and messages, but also potentially monitor your eye health? Greg is joined by the futurist Tracey Follows and guests including: - Priya Morjaria, Assistant Professor in International Eye Health at the London School of Hygiene and Tropical Medicine and Head of Global Programme Development at Peek Vision - Alex Himel,…

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 need one? If so, is the ‘conference room’ soon to be a thing of the past, replaced with cafes, comfy chairs, and table tennis tables? And will our future HQs be home to service robots and AI receptionists? Greg learns how the Covid-19 pandemic changed office working and the trends transforming the look of high-end office developments. He is joined by the futurist Tom Cheesewright and guests including: - Professor Matt Davis, University of Leeds - Jane Clay, Strategy Leader and Principal at Gensler which designs…

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 and battery power might transform our trains in the future. With him is the futurist Tom Cheesewright and guests including: - Dickon Ross, Editor of Rail Magazine - Maggie Simpson OBE, Director General at the Rail Freight Group - Mike Butler, Director of Rail & Innovation at Clarus Networks Produced by Jon Douglas. Dough is a BBC Audio North Production for BBC Radio 4 and BBC Sounds.

What will mobile phones be like in future? Greg Foot investigates Greg 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 phones - asking whether our handsets will shrink, stretch, roll, fold… or even disappear as new technology takes over? And will super-smart devices with AI assistants that second-guess our every move become the new normal? Alongside Greg is the futurist, Tracey Follows, and expert guests: leading strategist in the tech industry, Chetan Sharma, innovator and creator from one of the world’s newest Mobile Phone manufacturers, “Nothing Mobile", their AI and design lead, Sélim Benayat and co-founder and CEO of…

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 Helen Ball, to find out. You can also read the official Safer Sleep guidance, by copy and pasting the links below into your browser: NHS - https://www.nhs.uk/best-start-in-life/baby/baby-basics/newborn-and-baby-sleeping-advice-for-parents/safe-sleep-advice-for-babies/ Lullaby Trust - https://www.lullabytrust.org.uk/baby-safety/safer-sleep-information/safer-sleep-overview/ RESEARCHER: PHIL SANSOM PRODUCER: KATE HOLDSWORTH & GREG FOOT

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 in the studio by Mark Miodownik, Professor of Materials & Society at University College London, and Rob Haslam aka Mr Knife Guy. All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

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 greener, please do email us at sliced.bread@bbc.co.uk or send a voicenote to our Whatsapp number - 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

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 it. Each episode Greg 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' and should you spend your money on them? If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH & GREG FOOT

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 money? Presenter Greg Foot is joined by President of the British Society of Sexual Medicine, Mike Kirby, as well as NHS GP and Director of Men's Health at Manual, Dr Jeff Foster. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

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 fads promising to make us healthier, happier and greener. Are they really 'the best thing since sliced bread' and should you spend your money on them? If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH & GREG FOOT

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 wonder-product reputation? Presenter Greg Foot is joined in the studio by Lynn to hear her story and do a deep-dive into the science alongside Professor of Molecular Neuroendocrinology at the University of Cambridge, Giles Yeo. At Sliced Bread we're hungry for your suggestions so we can keep making fresh batches! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER:…

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 always, all of our investigations start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. PRESENTER: GREG FOOT PRODUCER: KATE HOLDSWORTH

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 fads promising to make us healthier, happier and greener. Are they really 'the best thing since sliced bread' and should you spend your money on them? If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk or send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

Are special shampoos and coatings any good at cleaning and protecting your car? They're all over Instagram: washes, foams, and ceramic coatings in a rainbow of coloured bottles that promise to give your car that showroom shine. For listener James - a driving instructor - the question is whether they're worth the money, or if an ordinary bottle of washing up liquid will do the job. To find out Greg is joined in the Salford studio by materials scientist and vehicle coatings researcher at the University of Manchester, Dr Beatriz Mingo, as well car expert and TV presenter Tim Shaw. Each episode Greg 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' and should you spend your money on them? At Sliced Bread, we're hungry for your suggestions so we can keep making fresh batches! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at…

Listener Julie has been reaching for the fake tan every spring to add a "bit of colour" to her legs, but after much trial and error with foams, lotions and gels, she got in touch with Sliced Bread to ask what is actually IN fake tan? How does it work - and is there a particular kind that might suit her best? Greg Foot is joined by Consultant Dermatologist and Senior Lecturer at the University of Manchester Dr Jean Ayer, as well as Cosmetic Scientist and Science Communicator who runs the blog LabMuffin Dr Michelle Wong, to find out. Each episode Greg 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' and should you spend your money on them? At Sliced Bread, we're hungry for your suggestions so we can keep making fresh batches! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp…

Can anything stop toenail fungus in its tracks? It's one of the most-requested but least-talked-about topics, so listener Julia speaks for many as she joins us to ask about treatments for toenail fungus. She's keen to know if the laser-light devices shes's seen on social media really do work, as well as over-the-counter lacquers and prescription drugs. To get the answers Greg and Julia are joined in the Salford studio by Dr Ivan Bristow, who's on the British Association of Dermatologists' Foot Fungus Task Force. Each episode Greg 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' and should you spend your money on them? At Sliced Bread, we're hungry for your suggestions so we can keep making fresh batches! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807.…

Greg Foot speaks to Consultant Dermatologist and Dermatological Surgeon Dr Emma Craythorne - who has plenty of skin in the game - to find some answers for listener Phil about about scars, how they occur, the different types, and what might help make them less obvious. Each episode Greg 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' and should you spend your money on them? At Sliced Bread, we're hungry for your suggestions so we can keep making fresh batches! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH AND GREG FOOT

Can creatine boost your body and mind? Listener Simon has been taking the fitness supplement creatine and wants to know if the science backs up the claim that it can make you stronger and faster. He's also heard that it can help with cognitive function. To find out if creatine can boost body and mind, presenter Greg Foot is joined by Graeme Close, Professor of Physiology at Liverpool John Moores University and Fabienne Sandkuhler, postdoctoral researcher at LMU Munich. Each episode Greg 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' and should you spend your money on them? All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

Can supersonic air travel make a comeback? Greg Foot, host of the BBC Radio 4 show 'Sliced Bread', now 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 episode examines the future of flight. How could new, supersonic flights not cost the earth? Will your future taxi be a flying one without a pilot? Could a new shape for aeroplanes make them more spacious and efficient? Alongside Greg is the futurist, Tom Cheesewright, and expert guests Mariya Tarabanovska, an aerospace engineer and the founder of Flight Crowd, a non-profit educational organisation focused on electric aviation and Simon Davies, chief test pilot at Vertical Aerospace, a British aerospace technology company. This episode was produced by Jay Unger. Dough is…

Could 'smart' clothing monitor our health? Greg Foot, host of the BBC Radio 4 show 'Sliced Bread', now 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 episode examines the future of our clothing. How can manufacturers dye clothes without using water? Could 'smart' fabrics monitor weather conditions and provide extra warmth or cooling when we need it? Will our body movements, instead of bulky batteries, provide the power for clothing to monitor our health? Will synthetic material be completely replaced by natural fibres and those made from waste products? Greg is joined by the futurist, Tracey Follows, and expert guests Dr Marie O'Mahony, programme leader for E-textiles and Wearable Technologies at the Winchester School…

Could your future home be built by a robot bricklayer? Greg Foot, host of the BBC Radio 4 show 'Sliced Bread', now 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 episode examines the future of UK housebuilding. Will new homes be cheaper to run and built to a higher standard? What potential do robots have to build quality homes quickly and cheaply? Could building homes with bricks become a thing of the past? Might 3D printing homes with concrete be a realistic alternative? And will factories play a bigger part in meeting the demand for new housing? Alongside Greg is the futurist Tom Cheesewright and expert guests including Prof. Richard Fitton, Professor of Building Performance at the University of Salford and Salar al…

Will delivery drones and robots make popping to the shops a thing of the past? Greg Foot, host of the BBC Radio 4 show 'Sliced Bread', now 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 episode looks at the future of home parcel delivery. One of the UK's biggest parcel delivery companies, Evri, explains why its trial of a robot delivery 'dog' will not spell the end for human couriers. A service already delivering coffee and groceries by drone in part of Dublin outlines its plans to take off in the UK. And Greg hears how looking to the past may improve home deliveries in future by making more of our inland waterways and rail network. Alongside Greg, delivering her expertise, is the futurist Tracey Follows and expert…

Will your car be driving you by 2050? Greg Foot, host of the BBC Radio 4 show Sliced Bread, now 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. The series kicks off with a look at the future of cars. Will new battery technology transform the range and price of electric cars? Why are fully autonomous vehicles still not yet allowed on the UK's public roads? Which self-driving vehicles are we most likely to see first? Will we really let our cars do the driving for us anyway? Could vehicles communicating with streetlights make journeys quicker for select motorists? Alongside Greg in the passenger seat is the futurist Tom Cheesewright and expert guests including: -Phil Blythe CBE - a former Chief Scientific Adviser to the UK's…

Is it worth getting a Smart Doorbell? Greg Foot pushes all the right buttons as he gathers consumer and crime experts to get answers for listener Derek, who's keen to learn more about the various features, prices and security elements in the growing market of smart doorbells. Each episode Greg 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' and should you spend your money on them? This episode is the last in the current series of Sliced Bread, but we're hungry for your suggestions so we can prepare another batch! If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

Is expensive salt better for your health? Greg Foot gathers the experts, dives into the data and crunches the numbers to get the answers for listener Sally. Each episode Greg 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' and should you spend your money on them? All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: SIMON HOBAN AND GREG FOOT

Greg Foot gathers the experts, and "chips" away at the science for listener Helen. Each episode Greg 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' and should you spend your money on them? All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH & GREG FOOT

Greg Foot gathers the experts, to find out which claims "stand up" to scrutiny for listener Bede. Each episode Greg 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' and should you spend your money on them? All of our episodes start with YOUR suggestions. If you’ve seen an ad, trend or wonder product promising to make you happier, healthier or greener, email us at sliced.bread@bbc.co.uk OR send a voice note to our WhatsApp number, 07543 306807. RESEARCHER: PHIL SANSOM PRODUCERS: KATE HOLDSWORTH AND GREG FOOT