Change Your Mind with New Scientist

We all know how important sleep is for our health, it’s a chance to rest our body and mind, but what if it’s also a vital opportunity for the brain to clear away waste? In this episode of Change Your Mind, health journalists Cat de Lange and Helen Thomson explore the glymphatic system, a hidden cleaning network deep in the brain that has alluded scientists for years. They’re asking how it helps keep the brain healthy, and why sleep could play such an important role. Joining them is Maiken Nedergaard, a neuroscientist whose research helped uncover the system. Together, they look at how fluid moves through the brain, what scientists are learning about its links to sleep and conditions such as Alzheimer’s, and what might help support it. Produced by Emily Bird Get in touch at ⁠⁠changeyourmind@newscientist.com⁠⁠ Find out more about the glymphatic system at New Scientist: https://www.newscientist.com/article/2590514-can-we-harness-the-brains-deep-cleaning-system-to-prevent-alzheimers/

Series 3 of Change Your Mind with New Scientist is on it's way! But we couldn't leave you with nothing whilst we put together our next batch of myth-busting interviews with top brain experts. Cat de Lange and Helen Thomson share the very best tips and tricks they've picked up in their decades as Health Journalists. We learn how avoiding AI could give our brains a dopamine hit and How to really make a habit stick. Produced by Emily Bird

Bonus Brain Tips! Series 3 of Change Your Mind with New Scientist is on it's way! But we couldn't leave you with nothing whilst we put together our next batch of myth-busting interviews with top brain experts. Cat de Lange and Helen Thomson share the very best tips and tricks they've picked up in their decades as Health Journalists. We learn how protecting your hearing could be the secret to protecting against dementia and how to fight habituation and feel more alive. Produced by Emily Bird

Can a growth mindset help you cope with exam pressure? Does writing by hand help you remember more? And what does the science really say about lion’s mane and pets? In this special listener Q&A, Cat de Lange and Helen Thomson bring series two of Change Your Mind with New Scientist to a close by answering questions from the inbox. Drawing on neuroscience research, they explore effective studying, stress, memory and the claims surrounding popular brain-health supplements. Along the way, they consider why the way we take notes might matter, what doodling could be doing for your attention, and whether having a pet can benefit your brain. Change Your Mind will be back with two shorter episodes of brain-boosting tips, before returning for series three with new expert guests and discoveries. We want to hear your thoughts, so leave a comment or send your ideas and questions for future episodes to changeyourmind@newscientist.com. Produced by Emily Bird.

Exercise is often framed as a way to get fit, but what if its biggest benefits are happening in your brain? In this episode of Change Your Mind, Health Journalists Cat de Lange and Helen Thomson explore why movement matters for our mood and long-term brain health, and why making exercise part of everyday life can feel like such a challenge. Joining them is Brendon Stubbs, a leading researcher in physical activity and mental health. Together, they look at what science is beginning to reveal about exercise and the brain, whether some kinds of movement might be better than others, and how much you need to do to make a difference. Produced by Emily Bird Got a topic you'd like us to cover? Email us at ⁠changeyourmind@newscientist.com⁠ Find out more about the brain benefits of exercise at New Scientist: https://www.newscientist.com/article/2589563-short-bursts-of-exercise-can-boost-your-cognition/ Sources: Astrocytes -…

Is now really the worst time in history to be a teenager? This week, health Journalists Cat de Lange and Helen Thomson take on a topic that worries many parents: teenage mental health. Helping them wade through the misinformation is Lucy Foulkes, a psychologist at the University of Oxford who specialises in teenage mental health and social development. She explains why adolescence is such a vulnerable time for the brain, and why it lasts much longer than you might expect. She also shares a surprising idea about whether all our talk about mental health might have unexpected downsides. Are smartphones really villain they're made out to be, or is something bigger going on? Cat and Helen come away with practical ideas for supporting the teenagers in their lives, and a few habits they need to change themselves. Got a topic you'd like us to cover? Email us at changeyourmind@newscientist.com If you're struggling with any of the issues discussed in this episode, support is available from the UK Samaritans and the US…

Feeling tempted by social media tips to “reset” your vagus nerve, fix your anxiety and banish inflammation? In this episode, Health Journalists Cat de Lange and Helen Thomson dig into the science behind vagus nerve stimulation. With neurosurgeon and researcher Kevin Tracey, they explore how this a modern wellness obsession came about, what FDA‑approved implants can really do for conditions like rheumatoid arthritis, and why most DIY hacks may be running ahead of the evidence. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠ Find out more about The Vagus Nerve at New Scientist: https://www.newscientist.com/article/2388223-unravelling-the-secrets-of-the-vagus-nerve-will-revolutionise-medicine/ Sources: The Great Nerve book by Kevin Tracey https://www.penguin.co.uk/books/470370/the-great-nerve-by-tracey-dr-kevin/978140597850 Linda Watkins paper: https://pubmed.ncbi.nlm.nih.gov/7746479/ Kevin’s original…

Why do so many of us feel calmer, clearer and more creative by the sea, a river or a lake? In this episode, Cat de Lange and Helen Thomson dive into the science of blue spaces. Picking apart the theories behind why water captures our attention and how time spent near water can change how we feel pain, our stress levels and even long-term physical health. They’re joined by psychologist Dr Mathew White, whose large-scale studies are revealing why time near water might give our brains an extra boost over green spaces alone, and how much you really need each week to feel the effects. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠ Find out more about Blue Spaces at New Scientist: https://www.newscientist.com/article/2328003-why-spending-time-near-water-gives-us-a-powerful-mental-health-boost/ https://www.newscientist.com/article/2272260-green-spaces-arent-just-for-nature-they-boost-our-mental-health-too/…

If after a record-breaking summer of heatwaves our warming planet is weighing heavily on your mind, you are not alone. Climate anxiety is on the rise, especially among young people, but what makes it different from “ordinary” anxiety, and how should we respond? In this episode of Change Your Mind with New Scientist Cat de Lange and Helen Thomson talk to psychotherapist and climate-aware therapy expert Caroline Hickman about why eco anxiety is a rational response to a warming world, how it is reshaping young people’s lives and decisions, and what her global research reveals about sadness, fear and a sense of betrayal. They explore practical ways to live with climate distress without being overwhelmed from reframing anxiety as care, to building resilience, to using imagination to create hopeful visions of the future. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠ Find out more about Climate Anxiety at…

In this episode of Change Your Mind, Health Journalists Helen Thomson and Cat de Lange explore the science of cognitive reserve, the brain’s hidden resilience that can help delay the symptoms of dementia. They talk to Professor Yaakov Stern, a leading researcher in the field, to uncover what cognitive reserve actually is, how it’s measured, and why some people stay mentally sharp despite significant brain changes. Along the way, they delve into surprising evidence on music, bilingualism, social life, exercise, and even hobbies like quilting and photography to ask how much effort we really need to put in to future‑proof our brains. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com Find out more about Cognitive Reserve at New Scientist: https://www.newscientist.com/article/2526727-why-you-need-to-future-proof-your-brain-in-middle-age-and-how-to-start/ Sources:…

In this episode of Change Your Mind with New Scientist, Health Journalists Helen Thomson and Cat de Lange dive into the headline grabbing class of drugs behind the Ozempic boom to ask what these medications are really doing to our brains? Beyond weight loss and diabetes, early evidence hints at wide‑ranging effects on appetite, addiction, mood, and even long‑term brain health. With so many people now taking GLP‑1 agonists, are we unintentionally running the largest brain experiment in history, and what is it starting to reveal? To find out, they’re joined by Professor Paul Kenny, a leading expert on the brain’s reward and motivation systems. Together, they unpack how these drugs might quiet “food noise”, reshape our cravings, and potentially influence conditions like depression, alcohol use, and Alzheimer’s disease, while also confronting their cultural side effects, from shifting body ideals to questions about who really benefits. Produced by Emily Bird Find out more about Ozempic and other GLP-1 Agonists…

Are you getting enough rest? In this episode of Change Your Mind, health journalists Helen Thomson and Cat de Lange dive into the psychology and neuroscience of rest to find out how we can make the most of our downtime. They’re joined by Claudia Hammond, broadcaster, author, and visiting professor at the University of Sussex, to unpack the surprising ways your brain lights up when you switch off. If you’ve ever wondered whether scrolling on your sofa really counts as rest, how much rest you actually need, or what kinds of activities are most restorative, this episode might just change how you think about doing nothing. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠⁠⁠⁠⁠ Find out more about Rest at New Scientist: https://www.newscientist.com/article/2508430-low-on-energy-a-new-understanding-of-rest-could-help-revitalise-you/

Can your daily coffee actually be good for your brain, or should we be listening to the influencers who claim we need to cut it out? In this episode of Change Your Mind, Health Journalists Helen Thomson and Cat de Lange dive into the science of caffeine: to find out whether we can enjoy our coffee fix guilt free. They’re joined by Dr Astrid Nehlig, a leading researcher on caffeine and the brain, to explore everything from the long term effects of caffeine on our aging brains, to the surprising ways coffee may be acting on our Gut Microbiome. If you’ve ever wondered whether to cut down, quit, or top up your cup, this episode might just change how you think about caffeine. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠⁠⁠⁠ Find out more about Caffeine at New Scientist: https://www.newscientist.com/article/2525685-coffees-mood-boosting-effects-arent-just-down-to-caffeine/

Series 2 of Change Your Mind with New Scientist is on it's way! But we couldn't leave you with nothing whilst we put together our next batch of myth-busting interviews with top brain experts. Cat de Lange and Helen Thomson share the very best tips and tricks they've picked up in their decades as Health Journalists. We learn how texting could be good for your brain health and how a morning walk in the sun could lead to a better night's sleep. Produced by Emily Bird

Series 2 of Change Your Mind with New Scientist is on it's way! But we couldn't leave you with nothing whilst we put together our next batch of myth-busting interviews with top brain experts. Cat de Lange and Helen Thomson share the very best tips and tricks they've picked up in their decades as Health Journalists. We learn why coffee could be the surprising secret to a successful nap, and why simple tricks can be the most effective in tackling chronic stress. Produced by Emily Bird

Does your brain really stop developing at 25? How much damage does a bad night's sleep actually do? And if you stop drinking alcohol, can your brain recover? In this special listener Q&A, Cat de Lange and Helen Thomson wrap up the first series of Change Your Mind with New Scientist by tackling your questions. Drawing on the latest neuroscience, they separate fact from fiction on some of the biggest brain health topics we've covered so far. Along the way, they reflect on the habits that surprised them most this series, from cold-water swimming to spending time alone, before diving into your questions about brain development, memory, emotions, alcohol and even whether ditching your clothes could have unexpected benefits for your mental wellbeing. Change your mind will be back in three weeks time for series two with brand new expert guests and brain-changing discoveries. We want to hear your thoughts, so leave a comment or send us your ideas and questions for future episodes at changeyourmind@newscientist.com.…

Our sense of smell is often dismissed as our less important than sight and hearing, but what if it’s quietly shaping our memories, mood and long‑term brain health? In this episode, Health Journalists Helen Thomson and Cat de Lange explore the surprising brain superhighway between scent, emotion and memory, to explore why certain smells can yank you back to childhood and why smell could hold the key to healthy brain aging. They are joined by neuroscientist Michael Leon, who explains what happens when we lose our sense of smell, and staggeringly that simply enriching your life with pleasant scents could help protect you from diseases like Alzheimer’s. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠⁠⁠changeyourmind@newscientist.com⁠⁠⁠ Find out more about your senses at New Scientist: ⁠https://www.newscientist.com/article-topic/senses/⁠ Learn more about our sponsor Alzheimer’s Society:…

Health Journalists Cat de Lange and Helen Thomson just want some time to themselves... but not everyone feels that way, for others moments alone can be deeply uncomfortable. Research shows that solitude could be incredibly important for our mental health, so whether we’re craving it or avoiding we should probably learn how to do it right, In this episode of Change Your Mind from New Scientist, Helen and Cat explore the surprising science of solitude. Including how it differs from loneliness, and why time alone can sometimes even improve our connections with other people. They’re joined by Professor Netta Weinstein, a psychologist at the University of Reading and co-author of Solitude: The Power and Science of Being Alone, to ask how much time alone is actually good for your brain? And how do you make the most of your alone time to restore your mood, creativity and patience? Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to…

Microplastics can be found everywhere from freshly falling Antarctic snow to the bottom of the Mariana Trench and our brains are no exception. In this episode of Change Your Mind with New Scientist, Health Journalists Cat de Lange and Helen Thomson trace the origins of microplastics and nanoplastics to tell the story of how they end up in the food we eat, the water we drink and the air we breathe. There’s no question that these tiny plastic particles are in all of our bodies, but are they causing any harm there? With the help of “godfather of microplastics” Professor Richard Thompson, they explore what decades of animal studies really show about development, fertility, behaviour and brain health and why it’s so hard to get definitive answers in humans. Are microplastics really building up in our brains, and if so, what might that mean for memory, mood or dementia risk? Should you be worried about your non-stick pans, plastic water bottles or synthetic clothes? Produced by Emily Bird We want to hear your…

In this episode of Change Your Mind, Science Journalists Cat de Lange and Helen Thomson ask whether brain training is finally shaking off its flaky reputation and if a simple computer game could really cut your risk of dementia. For years, Sudoku and brain game apps promised to “keep your brain young”, then were largely dismissed as only making you better at the game itself. So why is brain training back in the headlines now? Cat speaks to Professor Marilyn Albert, director of the Alzheimer’s Disease Research Center at Johns Hopkins, about her study that recently linked a specific kind of speed‑processing training to a 25% lower risk of dementia. But is this finding too good to be true? Or should we all be signing up to give this brain training game a go? Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠⁠changeyourmind@newscientist.com⁠ Find out more about Brain Training and dementia at New Scientist Learn more about our sponsor Alzheimer’s…

What if the key to a healthier brain isn't in your head at all? This week on Change Your Mind, Health Journalists Cat de Lange and Helen Thomson dive into the fascinating world of the gut microbiota, to ask whether the trillions of microbes living inside us could be influencing everything from our mood and stress levels to how we think and feel. With microbiome testing kits, probiotics and gut-health products booming in popularity, how much of the hype is backed by science? Can changing what you eat really alter your mental health? And do fermented foods, fibre supplements and expensive gut tests actually deliver on their promises? To separate fact from fiction, we speak to one of the world's leading microbiome researchers, Professor Ted Dinan, to find out what decades of research reveal about the gut-brain connection. Produced by Emily Bird We want to hear your thoughts, leave a comment or send in your ideas for future episodes to ⁠⁠changeyourmind@newscientist.com Find out more about the microbiome at New…

Manifestation has gone mainstream. From vision boards and affirmations to TikTok trends promising abundance and success, millions of people believe they can turn their thoughts into reality. But is there any science behind it? In this episode of Change Your Mind, New Scientist journalists Cat de Lange and Helen Thomson investigate the neuroscience of manifestation. Can visualising your goals really change your behaviour? Why does the brain focus so heavily on negative outcomes? And could techniques often dismissed as "woo" actually help you achieve what you want? Joining them is neuroscientist Dr Sabina Brennan, who explains what happens in the brain when we focus our attention, challenge limiting beliefs and imagine future success. Together, they explore the surprising links between manifestation, neuroplasticity and goal-setting and reveal why the real power may not lie in the universe, but in your own mind. We want to hear your thoughts, leave a comment or send in your ideas for future episodes to…

If you’ve ever wondered whether the cold‑water swimming craze is a genuine brain booster or just a very chilly fad, this episode is for you. New Scientist journalists Cat de Lange and Helen Thomson plunge into the science behind cold dips, ice baths and saunas, asking whether they really can lift mood, protect the brain and build resilience, or if a warm pool and a chat with friends would do just as much. Along the way, Cat and Helen explore why so many people feel transformed by getting into very cold water, and what might really be driving those post‑swim highs. Is it something special happening inside the brain and body or the simple magic of nature, community and ritual? They’re joined by Professor Mike Tipton, a world‑leading expert in how our bodies respond to extreme environments. Together, they ask: in an age of central heating and air conditioning, have we made ourselves too comfortable for our brains and bodies’ own good? We want to hear your thoughts, leave a comment or send in your ideas for…

If the wellness industry has you wondering whether your daily supplements are helping your brain, or just draining your bank account, this episode is for you. New Scientist journalists Cat de Lange and Helen Thomson reveal the science behind multivitamins, omega-3s, vitamin D, creatine and more, separating the snake oil from the evidence that actually stands up. Along the way, they unpack why even the most scientifically minded people can fall for wellness trends, how social media has transformed the supplement boom, and what researchers are really discovering about brain health as we age. They’re joined by Harvard professor and physician JoAnn Manson, who has led some of the largest and most rigorous studies ever conducted on supplements and cognition. From surprising findings on multivitamins to the truth about chocolate, fish oils and “brain boosting” pills, this episode explores what’s worth paying attention to, and what might be better left on the shelf. Produced by Emily Bird We want to hear your…

In the very first episode of Change Your Mind, New Scientist journalists Cat de Lange and Helen Thomson tackle one of the most common, and misunderstood, mental health challenges: anxiety. Why do some people bounce back from stress while others feel trapped in a constant state of alarm? And why is anxiety rising so sharply, especially among younger generations? Helen opens up about her own experiences with overwhelming anxiety, from panic on a flight home to the quieter daily dread that so many people hide beneath the surface. Together, Cat and Helen cut through the social media quick fixes to explore what neuroscience really tells us about anxious minds. They’re joined by psychotherapist, former NHS clinical lead and bestselling author Owen O’Kane, whose radically compassionate approach reframes anxiety not as a flaw to eliminate, but as a protective system that’s working overtime. Drawing on neuroscience, therapy and personal experience, Owen explains why calming the body must come before calming the mind…

Change Your Mind from New Scientist brings you the brain health advice you really need to know. Every week, award‑winning science journalists Cat de Lange and Helen Thomson cut through wellness hype to find out what actually keeps your mind sharp, your mood steady and your memory strong. As friends, they’ve spent decades swapping stories, testing trends and exploring the latest neuroscience, and thought it was about time to share the tips and tricks that have genuinely changed their own lives.From cold plunges to coffee, supplements to sleep, Ozempic and AI they speak to leading experts and ask: does this really work? Expect smart conversations, clear answers, and practical takeaways - with plenty of laughs along the way.Because when you understand your brain, you really can change your mind - for the better. Look out for our first episode tomorrow and subscribe so you never miss our episodes each Thursday.