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The world’s top scientists explain the latest health, nutrition, and gut health research and translate it into practical advice to improve your health & weight. Join ZOE Science & Nutrition, on a journey of scientific discovery. Hosted by Jonathan Wolf.

ZOE Science & Nutrition

Most of us never question how we breathe. Yet many of us over-breathe or mouth-breathe without realising it. In this episode, investigative journalist and international bestselling author James Nestor shares four breathing techniques to retrain your nervous system and support better health.

This episode is for anyone who feels stressed, snores, wakes up tired, or wants a simple way to improve their health. James, who has spent over a decade researching breathing science with leading respiratory experts, guides us through daily breathing habits to help calm your body, improve oxygen efficiency, and support long-term wellbeing. We explore why nasal breathing is more efficient, how slow breathing can influence the nervous system, and how modern lifestyles may have reshaped our airways. 

If breathing is something you do 20,000 times a day, what might change if you retrained it?

🌱 Try our science-backed and tasty wholefood supplement Daily 30+

Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE

Follow ZOE on Instagram.

Timecodes

00:00 Intro

04:15 The change that fixed my sleep and energy

09:55 Could your headaches start with your breath?

11:40 Are you telling your brain you’re stressed?

15:25 Is this the junk food of breathing?

17:30 Snoring isn’t just annoying

19:35 Can you strengthen your airway?

23:35 The moment modern food changed our faces

27:10 How early habits shape how you breathe for life

28:10 Why your nose is more powerful than you think

30:20 Why slower breathing gives you more oxygen

32:35 The molecule you activate just by using your nose

35:20 The 10-day mouth breathing experiment

37:05 One night of mouth breathing changed everything

39:15 The surprising asthma connection

42:35 The fix is boring — and that’s the point

43:00 The one rule that changes everything

44:45 The truth about mouth taping

47:05 The safe way to try mouth tape

48:05 The five-minute breathing reset

49:25 Can you calm your nervous system in 20 seconds?

52:30 How fast will you feel a difference?

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

Eating for Better Brain Health: Your brain-gut blueprint

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Mentioned in today's episode

 Breath Reset: Free guided audio tracks from James Nestor

 Breath: Improve your health and wellbeing by discovering the lost art of breathing by James Nestor

 
Asthma & anxiety, Biological Psychology (2022)

 
Different breathing techniques in the management of asthma, Thorax (2006)

 
61% Self-Identify as Mouth Breathers, Sleep Review (2015)

Have feedback or a topic you'd like us to cover? Let us know here.

Episode transcripts are available here.

The 4 breathing secrets that will transform your health today | James Nestor

Today, we’re taking a closer look at one of the world’s favourite breakfasts - oats.

Depending on who you ask, oats are either a superfood or source for concern. Either a great way to get fibre or a worrying blood sugar spiker. An all natural ally or pesticide riddled wrong’un. 

So what’s the truth? Are oats a smart start to your day or something to be cautious about?

Professor Sarah Berry joins me to dig into the science. What does the literature say about oats?

🌱 Try our new plant based wholefood supplement - Daily30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Have feedback or a topic you'd like us to cover? Let us know hereListen to the full episode here

Recap: Should you eat oats every morning? | Sarah Berry

Snacks make up a quarter of what most people eat. Yet most of us never question them.

In this episode, Professor Sarah Berry, ZOE’s Chief Scientist, explains why snacking is not the problem and how seven snack swaps can lower cholesterol, support gut health, and reduce heart disease risk.

Most snacks are high in sugar, salt, and saturated fat, and many carry “health” claims that hide this. Sarah breaks down how to spot this, explains what makes a good snack and why snack timing matters.

You’ll walk away with seven simple snack ideas that help improve cholesterol, blood sugar, and heart health in weeks.

If you’re a snacker, this may be the easiest place to improve your diet.

🌱 Try our science-backed and tasty wholefood supplement Daily 30+

Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE

Follow ZOE on Instagram.

Timecodes

00:00 Intro

03:31 95% of us snack every day

06:33 The 9pm rule that changes everything

12:43 Why late snacks keep you less full

16:33 The breakfast mistake that adds 320 calories

21:35 The ‘bliss point’ that makes snacks hard to stop

25:37 Should you worry about sugar?

29:32 How to actually read a snack label

33:45 Why sugar appears under 42 different names

35:30 The simple snack most people overlook

38:15 The protein-packed food we don’t eat enough of

41:26 The one swap that cut heart disease risk by 30%

43:22 Why this high-fat snack doesn’t cause weight gain

46:26 The fermented food that supports your gut

48:20 The creamy fruit that keeps you full

50:30 The sweet treat that may help your heart

52:55 How quickly you’ll feel the difference

55:35 Why most snacks quietly drag your diet down

56:32 Why timing may matter more than frequency

01:00:20 Can you snack and still stay healthy?

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

Eating for Better Brain Health: Your brain-gut blueprint

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Mentioned in today's episode

ZOE snacking study: What should you do?

The ZOE Big IF Study: What did we find?

Whole Fruits Versus 100% Fruit Juice, Nutrition Bulletin (2025)

What are added sugars, and where are they hidden?

Have feedback or a topic you'd like us to cover? Let us know here.

Episode transcripts are available here.

7 snacks for a longer & healthier life | Prof Sarah Berry

Today, we’re asking how we can boost our brain.

Our brain is a living, morphing organ that is constantly responding to the stimuli we feed it. So the big question is: what sort of stimuli will keep our brain strong and healthy? Is it brain puzzles? Supplements?

Neuroscientist Dr. Wendy Suzuki believes the most powerful way to support your brain is by simply moving your body. She’s joining me today to explain why.

🌱 Try our new plant based wholefood supplement - Daily30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Have feedback or a topic you'd like us to cover? Let us know hereListen to the full episode here

Recap: How exercise slows brain ageing | Dr Wendy Suzuki

Chronic diseases like heart disease, diabetes, and obesity are killing more people than ever before. Could your diet be the biggest driver of this risk?

Today, Dr Mark Hyman explains why food matters more than genetics for long-term health, and how one diet change can make the biggest difference. 

Alongside Professor Tim Spector, Mark, a 15-times New York Times bestselling author and a practising family doctor, explores how modern eating is linked to chronic disease and what the science says reduces risk.

We break down how food is designed to make us eat more, how this affects metabolism, insulin and inflammation, and why this matters more than your genes.

By the end of the episode, you’ll understand the single most important dietary change Mark believes can lower chronic disease risk, based on clinical experience.

If the modern world is driving these conditions, what’s one small change you can make to take back control of your future health?

🌱 Try our science-backed and tasty wholefood supplement Daily 30+

Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE

Follow ZOE on Instagram.

Timecodes

00:00 Intro

04:12 Why birth is designed to be messy

08:32 Why your first microbes shape everything later

10:46 Can you replace microbes after a C-section?

13:05 Why the first few years matter more than the rest

15:54 Why antibiotics always come with a hidden cost

17:42 How families swap microbes without realising

19:06 Why microbes survive in some places — and not others

21:25 Why bigger social groups protect your immune system

22:30 How scientists can tell who you live with

24:15 Why closeness matters more than genetics

25:38 Can you catch bad gut bugs from other people?

26:29 Can anxiety spread through gut microbes?

27:55 How scientists now rank “good” and “bad” gut bugs

31:05 Why countryside living changes your gut health

33:49 Why getting dirty may improve mental health

35:33 Why sterilising everything can backfire

38:05 Why pets — especially dogs — boost gut health

42:18 Can your partner improve your health without dieting?

43:25 Why loneliness harms your gut microbiome

45:25 The shared habit of long-living communities

52:01 Why fighting germs may be harming your health

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

Eating for Better Brain Health: Your brain-gut blueprint

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

 
Mentioned in today's episodeFood Fix Uncensored: Inside The Food Industry's Biggest Cover-Ups by Mark Hyman

 Salt, Sugar, Fat: How the Food Giants Hooked Us by Michael Moss

 Nourishment: What Animals Can Teach Us about Rediscovering Our Nutritional Wisdom by Fred Provenza

 
Global Burden of Disease study: Diet vs. smoking, Lancet (2019)

 
Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain, Cell (2019)

 
The study of food addiction, Appetite (2010)

 Can fermented food fight inflammation?

 
Breast Cancer Risk among US-Resident Polish Migrant Women, IJERPH (2021)

 
Milk and Health, NEJM (2020)

Have feedback or a topic you'd like us to cover? Let us know here.

Episode transcripts are available here.

The #1 diet change to make today to fight chronic disease | Dr Mark Hyman

Today, we’re talking about arthritis.

It might not sound as alarming as cancer or heart disease, but arthritis can quietly turn simple movements into painful tasks.

Here’s the good news. Emerging research suggests that diet can be a powerful first line of defence - helping to lower inflammation and reduce the risk of the disease developing.

I’m joined by Dr. Tamiko Katsumoto to explore how simple changes to what’s on our plate can help protect our joints.

🌱 Try our new plant based wholefood supplement - Daily30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Have feedback or a topic you'd like us to cover? Let us know here

Listen to the full episode here

Recap: How to lower your risk of arthritis | Dr Tamiko Katsumoto

Are modern habits around cleanliness, parenting, and social contact shaping your gut health more than you realise? 

In this episode, Professor Tim Spector explains how gut microbes are shared between people - through relationships, daily contact, and the environments we live in, and why this matters for long-term health. You’ll learn how human contact may be influencing your gut in ways most of us never consider.

Tim explains why supporting gut microbiome is less about control and more about balance, and you’ll learn simple ways to support a healthier gut through food, social connection and lifestyle habits.

If your gut reflects the people you live with and the places you spend time, what small change could you make this week - in your home, your habits, or your social life - that might support your gut for the long term?

🌱 Try our science-backed and tasty wholefood supplement Daily 30+

Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE

Follow ZOE on Instagram.

Timecodes

00:00 Intro

04:12 Why birth is designed to be messy

08:32 Why your first microbes shape everything later

10:46 Can you replace microbes after a C-section?

13:05 Why the first few years matter more than the rest

15:54 Why antibiotics always come with a hidden cost

17:42 How families swap microbes without realising

19:06 Why microbes survive in some places — and not others

21:25 Why bigger social groups protect your immune system

22:30 How scientists can tell who you live with

24:15 Why closeness matters more than genetics

25:38 Can you catch bad gut bugs from other people?

26:29 Can anxiety spread through gut microbes?

27:55 How scientists now rank “good” and “bad” gut bugs

31:05 Why countryside living changes your gut health

33:49 Why getting dirty may improve mental health

35:33 Why sterilising everything can backfire

38:05 Why pets — especially dogs — boost gut health

42:18 Can your partner improve your health without dieting?

43:25 Why loneliness harms your gut microbiome

45:25 The shared habit of long-living communities

52:01 Why fighting germs may be harming your health

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

Eating for Better Brain Health: Your brain-gut blueprint

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Mentioned in today's episode

 
5 daily habits of people who live longer | Dan Buettner

 
Risk of Asthma and Allergies in Children Delivered by Cesarean Section, The Journal of Allergy and Clinical Immunology (2024)

 
Can maternal-child microbial seeding interventions improve the health of infants delivered by Cesarean section?, Cell (2022)

 
Dietary Exposure to Antibiotic Residues, Frontiers (2022)

 
The person-to-person transmission landscape of the gut and oral microbiomes, Nature (2023)

 
Gut micro-organisms associated with health, nutrition and dietary interventions, Nature (2025)

 
Intergenerational transmission of diet-induced obesity, A&R (2021)

 
The indoors microbiome and human health, Nature Reviews Microbiology (2024)

 
Cohabiting family members share microbiota with one another and with their dogs, Microbiology and Infectious Disease (2013)

 
Rural and urban microbiota, Gut Microbes (2014)

 
Infant pacifier sanitization and risk, Journal of Allergy and Clinical Immunology (2021)

Have feedback or a topic you'd like us to cover? Let us know here.

Episode transcripts are available here.

5 ways relationships change your gut health | Prof Tim Spector

Today, we’re exploring circadian rhythms.

Did you know you could eat the exact same meal at two different times of day and your body would respond drastically differently? It sounds like a riddle - but it actually comes down to your body clock. 

Every cell in your body has one. A tiny internal ticker, shaped by evolution over thousands of years, to keep you in sync with the phases of the day.

So, how can we ensure we’re doing the right things at the right times? I’m joined by Professor Russell Foster to help us all stay in time with our natural rhythm.

🌱 Try our new plant based wholefood supplement - Daily30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Have feedback or a topic you'd like us to cover? Let us know here

Listen to the full episode here

Recap: The hidden clock controlling your health | Professor Russell Foster

High blood pressure is the number one risk factor for deaths globally. But what if your blood pressure numbers were only part of that story?

In this episode, we’re joined by leading cardiologist Dr Sanjay Gupta, who explains why blood pressure is not a disease, but often a scream for help. 

Together with ZOE’s Chief Scientist, Professor Sarah Berry, he explores when blood pressure is a harmless response to stress, food, or movement, and when it signals real, long-term damage. You’ll learn why blood pressure targets aren’t universal, why worrying can make things worse, and why quality of life matters as much as numbers.

This episode also breaks down what you can do to lower your blood pressure. Not quick fixes. Not pills. But everyday lifestyle changes that address the root cause.

If your blood pressure is your body sending a message, what might it be asking you to change?

Unwrap the truth about your food 👉 ⁠Get the ZOE app 

🌱 Try our new plant based wholefood supplement - Daily 30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

Follow ZOE on Instagram.

Timecodes

00:00 Intro

03:40 What blood pressure really is

09:10 The damage builds slowly (and you won’t feel it)

11:00 The two numbers explained in plain English

13:05 Why the ‘right’ number depends on you

15:04 Why doctors can’t agree on ‘high’

16:35 The first rule: don’t panic

17:45 The clinic reading problem

20:20 The misdiagnosis issue

22:02 What high blood pressure can damage

23:40 Why problems show up years later

24:30 How common is high blood pressure?

27:00 The ‘silent killer’ warning signs

28:10 The bigger cause most people miss

29:10 Salt: why it helps some people more than others

33:30 The age effect most people ignore

35:11 How stress can push blood pressure up

36:35 The gut microbiome link (and the new research)

39:15 Why treatment can still fail

40:10 The uncomfortable numbers on medication benefit

41:15 The simple home-measurement routine

44:05 Sugar vs salt: what surprised the cardiologist

46:45 Where most salt really comes from

49:25 The exercise effect (and why it matters)

51:05 How fast lifestyle changes can show up

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

⁠Eating for Better Brain Health: Your brain-gut blueprint

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Mentioned in today's episode

 
Your gut microbiome and heart health

 
Gut microbiome diversity and hypertension, Journal of Hypertension (2021)

 
Ultra-processed food raises risk of heart disease, heart attack and stroke, BHF (2023)

 
Potassium and blood pressure, British Journal of Nutrition (2010)

Have feedback or a topic you'd like us to cover? Let us know here.

Episode transcripts are available here.

4 lifestyle changes that lower high blood pressure | Dr Sanjay Gupta

Today, we’re talking about fat.

Since founding ZOE, I’ve actually started eating more fat. That might surprise you. Because for decades, we’ve been told to fear it. “Fatty foods will clog your arteries and send your cholesterol through the roof.” Right?

Well, it’s not that simple. How ‘fat’ affects your health depends on a number of factors, including the type of fat, the food matrix and even how it’s produced. One thing is for sure, that single number on the front of a food packet, isn’t going to give you the full story.

I’m joined by Professor Sarah Berry to dig deeper into fat. Uncovering which will harm us and which can help us heal.

🌱 Try our new plant based wholefood supplement - Daily30+

*Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system

📚Books by our ZOE Scientists

The Food For Life Cookbook

Every Body Should Know This by Dr Federica Amati

Food For Life by Prof. Tim Spector

Ferment by Prof. Tim Spector

Free resources from ZOE

How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health

Live Healthier: Top 10 Tips From ZOE Science & Nutrition

Gut Guide - For a Healthier Microbiome in Weeks 

Better Breakfast Guide

Have feedback or a topic you'd like us to cover? Let us know here

Listen to the full episode here

Recap: How exercise slows brain ageing | Dr Wendy Suzuki

Lyt når som helst, hvor som helst

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