

Sliced Bread
BBC Radio 4
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 his findings back to the listener so they can decide if it’s worth spending their hard earned money on.New episodes of Sliced Bread are released weekly on Thursdays wherever you get your podcasts. But you can listen to the latest episode on BBC Sounds first, a week earlier than anywhere else. If you have a suggestion for a product to investigate, you can email the team on sliced.bread@bbc.co.uk or send a WhatsApp voice note via the number 07543 306807.Sliced Bread is produced by BBC Audio North for BBC Radio 4 and BBC Sounds.
Episodes
Mentioned books

Nov 7, 2024 • 28min
Toast - Reader's Digest UK
Join Richard Junger, a communication professor, Tom Browne, former editor, and Gary Hopkins, ex-owner of Reader's Digest UK, as they dissect the magazine's fall from grace. They tackle its fascinating history, from its cultural significance to its peak in the 1980s, and reveal the financial struggles post-acquisition by a private equity firm. The group also explores the challenges of adapting to a digital age and engaging younger audiences while reminiscing about Reader's Digest's nostalgic charm.

Oct 31, 2024 • 28min
Coffee Pods
Liz Redman, a concerned coffee pod user, teams up with Tim Ridley, a coffee expert and founder of United Baristas, and Cecile Chéron-Bessou, a research director in agroecology, to tackle the environmental dilemmas of coffee pods. They dive into the recyclability of these convenient products, weigh alternatives like AeroPress against traditional brewing, and explore how consumer choices impact our carbon footprint. The trio emphasizes sustainable practices, leaving listeners questioning their coffee habits while savoring their favorite brews.

11 snips
Oct 24, 2024 • 30min
Cleaning Sprays
In this intriguing discussion, listener Alice Kemp sparks a debate on the necessity of various cleaning sprays. Joined by Dr. Sally Bloomfield, an expert in home hygiene, and Lynsey Crombie, the 'Queen of Clean,' they dissect whether cleaning sprays are essential or if soap and water suffices. The trio unpacks the effectiveness of natural products like vinegar versus commercial options, while emphasizing targeted hygiene practices for household safety. They also explore the evolution of cleaning products and the balance between cleanliness and sustainability.

11 snips
Oct 17, 2024 • 33min
Longevity Supplements - 100th Episode
In this milestone discussion, physicist and computational biologist Andrew Steele, author of 'Ageless,' explores the science behind longevity supplements. He delves into popular compounds like NMN and spermidine, questioning their true effectiveness in extending life. Listener Solly Milton highlights the buzz around biohackers aiming to reverse aging, prompting a critical look at these claims. The conversation critiques the antioxidant myth and suggests a balanced approach to health, emphasizing evidence-based practices over costly supplements.

Oct 10, 2024 • 32min
Float Tanks
Maddy Emery, a passionate runner, dives into the world of float tanks to uncover their impact on performance and mental health. Joined by Justin Feinstein, a clinical neuropsychologist, they explore the scientific backing for claims of stress reduction and enhanced recovery. Paul Morgan adds insights on how float therapy aids athletic recovery, tackling muscle soreness and blood lactate levels. Together, they analyze personal experiences, societal pressures, and the real benefits of this trending therapy, making a compelling case for its potential.

Oct 3, 2024 • 29min
Slug Repellents
In this conversation, principal entomologist Dr. Hayley Jones and ecologist Dr. Gordon Port tackle the vexing issue of slugs in gardens. They discuss eco-friendly slug repellents like eggshells and copper tape, evaluating their effectiveness. The experts delve into the biology of slugs, innovative control strategies, and the ethical considerations of pest management. Join the fun as they even test some remedies to see which ones truly keep slugs at bay, blending science with a dash of humor.

8 snips
Sep 26, 2024 • 30min
Electrolytes
In this engaging discussion, Graham Close, a renowned Professor of Human Physiology and Head of Research at Liverpool John Moores University, explores the true role of electrolytes in hydration. He tackles the effectiveness of electrolyte drinks versus plain water, revealing how these products can enhance athletic performance and recovery. Close emphasizes the importance of a balanced diet for maintaining electrolyte levels and clarifies common misconceptions about hydration. Tune in for some surprising insights that could revolutionize your understanding of sports nutrition!

Sep 19, 2024 • 29min
Insulated Coffee Cups
Dr. Michael de Podesta, a chartered physicist and measurements expert, shares his insights on insulated coffee cups. He discusses how double-walled technology works and tests a high-tech cup that promises perfect temperature control. Joining him is Kamisha Darroux from Which?, who explains which features are worth the investment. They dive into the heat retention of different materials, comparing polypropylene and ceramic cups, and reveal the science behind effective insulation. Tune in for practical advice on keeping your coffee hot!

Sep 12, 2024 • 29min
Greens Powders
Greens powders are made up of dozens of ingredients, which are ground up and added to water. They claim to do all sorts of things for our bodies, like give us extra energy, clearer skin, boost our gut health and reduce bloating. But they're not cheap. So what's in them and do they work? That's what listener Sofie, whose social feeds have been bombarded with adverts for greens powders, wants to know. She's not alone - we've had lots of messages asking us to look into these products. To get some answers, Greg speaks to British Dietetic Association spokeswoman Sian Porter, and food scientist Dr Emily Leeming. The prices of the products were correct at the time of the recording.PRESENTER: GREG FOOT
PRODUCER: TOM MOSELEY

Sep 5, 2024 • 30min
Foam Rollers
Lots of people use a foam roller, either before after exercise. It's not usually a very comfortable experience - as Greg finds out in this episode - but is worth the pain? Can they really increase flexibility before exercise, and ease our muscles afterwards? Is it any better than stretching? As you'd expect, there are plenty of claims around these products, which cost anything from a tenner to more than £100 for a vibrating version. We're going right around the world for this one - listener Brendon joins us all the way from New Zealand, and to get him some answers we've got foam roller expert Dr David Behm dialling in from Canada. National Physiotherapy Lead for Nuffield Health Jodie Breach also joins Greg in the studio. So are foam rollers the best thing since sliced bread?PRESENTER: GREG FOOT
PRODUCER: TOM MOSELEY


