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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

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: Fat: The full story | Sarah Berry

Heart disease, dementia, depression, diabetes: what do these conditions have in common? Dr Will Bulsiewicz, a gastroenterologist and New York Times bestselling author, says the answer is inflammation. In today’s episode, Will explains the four nutrition workhorses that can reduce inflammation, heal your gut and supercharge your immune system - in as little as 24 hours.

We explore discoveries in Will’s new book, Plant Powered Plus, that explain the central role inflammation plays in health. You’ll learn which symptoms that seem unrelated, such as fatigue, skin breakouts, bloating, headaches, and joint pain, all share a common driver. You’ll also hear why he believes the gut and the immune system rise and fall together, and how a weakened gut barrier may keep the immune system on constant alert.

By the end of the episode, you will have a clear understanding of what inflammation is, how it can cause damage, and practical, food-first ideas to wrestle yourself from its clutches.

What’s one small change you could try this week? In your meals or your routine to help your body switch off “fight mode”?

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

02:22 Is inflammation always bad?

05:00 The 130 health conditions linked to inflammation

08:40 The difference between good and bad inflammation

10:50 Surprising signs of chronic inflammation you might ignore

13:40 Why your doctor might be missing the root cause of your illness

17:50 Why you shouldn't take anti-inflammatory pills every day

19:55 70% of your immune system lives here

23:30 What is ‘leaky gut’ and does it really exist?

25:20 How toxins sneak into your bloodstream

31:35 The massive impact of time-restricted eating on mood and energy

37:30 Why eating earlier in the day reduces inflammation

41:05 The #1 nutrient deficiency destroying our gut health

44:10 How fiber protects against heart disease and cancer

47:30 Why you need to ‘eat the rainbow’ to find your pot of gold

51:35 Your body can’t absorb these nutrients without microbes

52:50 The truth about healthy fats versus low-fat diets

55:05 The specific fat that beats a low-fat diet for heart health

58:00 How fermented foods reduce inflammation in just 10 weeks

01:00:35 The physical reaction your gut has to mental stress

01:06:25 The modern lifestyle mistake sabotaging your immune system

01:08:35 The simple morning habit that boosts energy and sleep

01:10:45 You can build a new gut barrier in just 5 days

📚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

Mentioned in today's episode

 Plant Powered Plus by Dr Will Bulsiewicz

 Fibre Fuelled by Dr Will Bulsiewicz

 ZOE’s PREDICT studies: What we’ve learned 

 
The Detrimental Impact of Ultra-Processed Foods on the Human Gut Microbiome and Gut Barrier, Nutrients (2025)

 
Correlation between human gut microbiome and diseases, Infectious Medicine (2020)

 
The ZOE BIG IF Study, MDPI (2024)

 
Dietary fibre in hypertension and cardiovascular disease management, BioMed Central (2022)

 
PREDIMED: Primary Prevention of Cardiovascular Disease with a Mediterranean Diet, The Journal of New England Medicine (2018)

 
Gut-microbiota-targeted diets modulate human immune status, Cell (2021)

 
Gastrointestinal illness and the biopsychosocial model, Psychosomatic Medicine (1998)

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

4 foods that heal your gut and reduce inflammation (in as little as 24 hours!) | Dr Will Bulsiewisz

Today we’re talking about habits.

Every January, millions of us set ambitious goals for the year ahead. Maybe you want to eat better, move more, stress less. But by February, millions of those well-intended resolutions are already in the bin. 

So why is changing your habits so hard?

Neuroscientist Dr Tara Swart joins me and Sarah Berry to explain how to implement small, consistent improvements that will set you up your success.

🌱 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 to maintain new habits in the New Year | Tara Swart & Sarah Berry

Would you like to stay healthy until you're 100? For most of us, the answer is, of course, yes. But why do some people live longer, and is it achievable?

In this episode, best-selling author and longevity expert Dan Buettner, explores what decades of studying the people who live the longest reveal about health and lifespan.

Instead of chasing hacks, the science suggests that a longer life is shaped by everyday food, social habits, and the places people live. We’ll look at practical habits seen across the world’s blue zones, rare global hotspots where celebrating your 100th birthday is common. Rather than relying on willpower, Dan explains why changing your routine and environment may be easier and more effective. By the end of the episode, you’ll have some simple tips to help you start your day like you live in a Blue Zone - and increase your chances of living healthily to 100.

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

01:24 What people who reach 100 actually eat

03:28 Why genes only explain 20% of longevity

07:20 What all Blue Zones diets secretly have in common

08:10 The high-carb pattern that shocks most people

09:20 Why grains and beans work together

10:50 The protein food that beats beef

11:55 Why plant protein comes with an extra benefit

12:15 Why fiber is the closest thing to a super nutrient

13:00 Why ‘fiber is sexy’ but ignored

15:05 A bathtub of meat vs how centenarians eat

15:50 You don’t have to be rich to eat well

17:25 Why deliciousness matters more than discipline

18:30 How many extra years diet can add

20:20 Why chasing longevity usually fails

22:40 What breakfast looks like at age 100

24:20 Why eating earlier helps your metabolism

25:45 The blood sugar crash that drives overeating

28:15 When ‘healthy’ yogurt has more sugar than Coke

31:15 How breakfast rules were shaped by food companies

33:30 The fasting window most people can manage

34:40 The overlooked habit: Blue Zones don’t snack

38:15 Why grumpy people don’t make it to 100

42:00 Why environment beats willpower

55:50 The five forces shaping long life

📚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

 
Recipe: Sardinia Minestrone

 
The Blue Zones Kitchen One Pot Meals: 100 Recipes to Live to 100 by Dan Buettner

 
The ZOE BIG IF Study, MDPI (2024)

 
ZOE’s PREDICT studies: What we’ve learned 

 
Breaking Bread: the Functions of Social Eating, Adaptive Human Behavior and Physiology (2017)

 
Consuming media, consuming food: investigating concurrent TV viewing and eating using a 7-d time use diary survey, PHN (2021)

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

Episode transcripts are available here.

5 daily habits of people who live longer | Dan Buettner

Inside each of us lives a bustling community of microbes; tiny organisms that outnumber our human cells. They’re there from the very moment we’re born, shaping our immune system and influencing our long-term health.

The science of the microbiome is evolving rapidly, but one thing is clear: We need to take care of these microbes so that they can take care of us.

Today, I’m joined by Dr. Suzanne Devkota and Tim Spector to explore how our gut bacteria protect us from disease and what we can do to strengthen this vital partnership.

🌱 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

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 your gut microbes could fight disease | Suzanne Devkota & Tim Spector

Dry January often raises big questions: how much alcohol is actually safe, and do you need to stop drinking altogether to protect your health? In this episode, world-leading alcohol expert Professor David Nutt explains why alcohol ranks as one of the most harmful drugs to society, how even “normal” drinking can affect your health, and what the science really says about cutting back without giving it up completely.

David, a neuropsychopharmacologist and former UK government drug adviser, explains why alcohol was ranked the most harmful drug overall in a landmark comparison of 20 drugs, how harm rises sharply as drinking increases, and unpacks common beliefs like red wine being “good for you”. The conversation also covers the social benefits of alcohol and why the goal isn’t necessarily to stop drinking, but to drink with awareness.

If you drink at all - whether it’s a glass most nights or more on weekends - this episode helps you understand where the real risks begin, and how to make alcohol work for you, not against you. And for listeners using dry January as a reset, David shares practical, science-based advice on how to cut down safely and sustainably.

If you’re pausing and reflecting this dry January, what might change when you start drinking again? And which habits are worth leaving behind for good?

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

01:45 Humans have been drinking for 40,000 years - here’s why

07:20 Why your first drink feels good - and the next ones don’t

11:45 You don’t need addiction to be harmed

12:45 Alcohol ranked worst out of 20 drugs

13:10 Why alcohol beats heroin on total harm

14:05 Alcohol is toxic — in the same way disinfectant is

15:00 The ‘pickling’ process happening inside your body

15:30 How alcohol quietly damages your arteries

17:30 The fastest way to lower blood pressure

18:25 Will your cholesterol drop if you stop drinking?

19:35 The red wine myth people still believe

20:45 Is any amount of alcohol actually ‘worth it’?

22:10 When alcohol may still make sense socially

23:05 What a ‘unit’ actually looks like

24:25 Why harm rises much faster than you expect

24:55 A bottle a day can cost you years of life

25:30 Why alcohol helps you fall asleep - then wrecks it

27:45 What a hangover really is (it’s not dehydration)

31:20 Does alcohol actually shrink your brain?

32:25 The long-term brain study people ignore

39:30 When stopping suddenly can be dangerous

41:05 The single rule that stops most people overdrinking

📚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

 
Drug harms in the UK: a multicriteria decision analysis, The Lancet (2010). 

 
Obesity trajectories and risk of dementia: 28 years of follow-up in the Whitehall II Study, The Alzheimer's Association (2018)

 
Feasibility of detection and intervention for alcohol-related liver disease in the community: the Alcohol and Liver Disease Detection study (ALDDeS), British Journal of General Practice (2013)

 
Drink?: The New Science of Alcohol and Your Health by Professor David Nutt (2020)

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

Episode transcripts are available here.

How to drink alcohol without destroying your health | Prof. David Nutt

Change is difficult. Our routines can feel locked in, our habits on autopilot, and the idea of a major lifestyle overhaul can seem impossible. 

However, Rich Roll is living proof that this isn’t the case. Once struggling with addiction and poor health, he transformed his diet, rebuilt his body, and completely rewrote his future.

In today’s conversation, Tim Spector and Rich Roll discuss why midlife is a crucial turning point for health, what happens to your microbiome when you change your diet, and why it’s never too late to make a dramatic shift.

🌱 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 from 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:

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 maintain new habits in the New Year | Tara Swart & Sarah Berry

Lyt når som helst, hvor som helst

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