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PODCAST

The GutFit Nutrition Podcast

Leigh Merotto, Dietitian | IBS, Gut Health and Fitness Expert

Welcome to the GutFit Nutrition Podcast with Leigh Merotto, RD, MHSc—Registered Dietitian, gut health expert, and long-distance runner. This show is your go-to resource for all things gut health, IBS, and performance nutrition. Each episode delivers evidence-based tips, tools and strategies to help you tackle IBS and digestive symptoms, fuel running and fitness, and feel your best from the inside out. If you"re ready to beat painful bloat and gut flare-ups, say goodbye to irregular poops, and

health & fitness nutrition

All Episodes

00:23:52

32: Which Probiotic Really Helps IBS? Here's What the...

The GutFit Nutrition Podcast ·

2025/11/21

Today we’re diving into a question that always comes up at my live events and in my community: “What’s the best probiotic for IBS?”It’s such a common question — and honestly, the truth might surprise you. So, let’s unpack what’s really going on when it comes to probiotics, IBS, and gut health.⏱️ Chapters: (0:00) — Welcome to the GutFit Nutrition Podcast (1:48) — What are Probiotics? (2:41) — Food Sources vs. Supplement Sources of Probiotics(3:15) — The Microbiome & IBS: Why Probiotics Come

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00:28:46

31: IBS Symptoms Disappear When You Travel to Europe?...

The GutFit Nutrition Podcast ·

2025/11/14

Have you ever noticed your IBS symptoms seem to disappear when you travel to Europe?In this episode, we talk about processing methods in Europe and how they impact digestibility, how food standards and regulation differ in Europe and North America (and why additives and processing could be linked to GI symptoms), why stress and movement may be playing a role, and more! ⏱️ Chapters: (0:00) — Episode Teaser(0:19) — Welcome to the GutFit Nutrition Podcast (1:07) — Today’s Episode: Unpacking Why IBS

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00:49:28

30: Underfuelling, RED-S and Your Gut With Sports...

The GutFit Nutrition Podcast ·

2025/11/07

What if you need to eat MORE, not less to reduce your gut symptoms, have more energy & have better performance? In this episode, let’s talk about why underfuelling and low energy availability (LEA) can have negative consequences, and specifically on gut health and digestive functions! ⏱️ Chapters: —👤 Today’s Guest: Christine Gemmell, RDChristine Gemmell is a Registered Dietitian and sports nutrition specialist based in Kingston, Ontario. In her practice Eminence Nutrition, she integrates

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00:38:22

29: High Intensity Training For a Happy Gut &...

The GutFit Nutrition Podcast ·

2025/11/01

Today’s episode is a recording from Episode 62 of the Joyful Eating For PCOS and Gut Health podcast. We explore how your body responds to different types of exercise intensities. We break down why gut symptoms can arise when you ramp up the intensity of your workouts, beneficial ways cortisol actually HELPS you exercise more efficiently, and how to enjoy high intensity training without the digestive upset. — 🌟 GRAB YOUR FREE ⁠Gut Friendly Sports Drink Guide!⁠⁠ ⁠— ✉️ CONNECT WITH ME: ⤵️📱⁠⁠⁠⁠⁠Follow

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00:33:14

28: Beyond the Bloat — 6 Step Roadmap to IBS Relief...

The GutFit Nutrition Podcast ·

2025/10/23

Do you really know what’s driving the IBS symptoms you experience?Instead of just taking more meds or cutting out more foods, addressing the underlying drives of IBS is the key to long-term IBS relief.In this episode, I’m recapping highlights from my live masterclass, Break Free From IBS: Your 6-Step Roadmap to Lasting Relief. If you missed it, don’t worry! I’ve pulled together the most important takeaways and I’ll be answering some of your top Q&A questions from the session.I cover some

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00:17:03

27: 5 Things I would Do If I Was Diagnosed with IBS...

The GutFit Nutrition Podcast ·

2025/10/17

If I was diagnosed with IBS today, what would I do?I’ve worked with hundreds of people with IBS and gut health concerns, and while everyone’s journey is unique, there are some key steps that make the process of healing, managing symptoms, and actually living your life again so much smoother.⏱️ Chapters: (00:00) — Welcome to the Gut Fit Nutrition Podcast(00:55) — If I Were Diagnosed With IBS Today…(01:34) — Setting Foundations for Success(01:46) — Step 1: Your Body Is Resilient(02:50) — Step 2: Detox

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00:22:26

26: Struggling With IBS? 5 Things That Might Be...

The GutFit Nutrition Podcast ·

2025/10/10

As a Dietitian and Coach specializing in IBS and gut health, I wanted to highlight the 5 most common things I see new clients and community members doing that is holding you back from true IBS relief.⏱️ Chapters: (00:00) — Free Masterclass: Break Free from IBS (Oct 14–15)(00:58) — Welcome to the GutFit Nutrition Podcast(01:48) — IBS Is Real: You're Not Alone(02:54) — Common Mistake #1: Over-Restricting Your Diet(04:22) — How Food Restriction Harms the Gut(05:56) — Nutrient Deficiencies and

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00:45:11

25: Food Intolerances in IBS & How To Use Enzymes...

The GutFit Nutrition Podcast ·

2025/10/03

What are food intolerances, and how can we support them through a holistic approach including enzyme supplements when appropriate? Join myself and Anouk Martini, a registered dietitian from Intoleran discuss the complexities of food intolerances, particularly in relation to IBS!⏱️ Chapters: (00:00) — Episode Teaser(00:49) — Welcome to the GutFit Nutrition Podcast(01:37) — Today’s Episode & Announcing Our Guest(02:18) — Anouk's Background & Career Journey(05:11) — What are Food

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00:10:10

24: Understanding the Gastrocolic Reflex and Your IBS...

The GutFit Nutrition Podcast ·

2025/09/26

Ever finished a meal and almost instantly, you have to run to the bathroom? In episode 24, we break down what’s happening in your body—specifically the gastrocolic reflex—and what you can do to calm it down!⏱️ Chapters: —📌Grab Your FREE Beat the Bloat Cheet Sheat! You'll also be added to my email list to be the first to know when my next LIVE free IBS Masterclass opens up.—✉️ CONNECT WITH ME: ⤵️📱⁠⁠⁠⁠Follow on Instagram⁠⁠⁠🖥️ ⁠⁠ Shop the Resource Suite⁠⁠⁠👩🏻‍⚕️ ⁠⁠⁠Apply For Coaching⁠⁠⁠If the

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00:58:12

23: Gut-Skin Connection — Healing Eczema and Fungal...

The GutFit Nutrition Podcast ·

2025/09/19

If you’ve ever dealt with stubborn skin issues like eczema, seborrheic dermatitis, or other fungal skin rashes—and felt frustrated by only getting temporary relief with creams, steroids, or medicated shampoos—this episode is for you. We’ll be exploring how an imbalanced gut microbiome can show up on our skin and what it really takes to heal from the inside out.⏱️ Chapters: (00:00) — Episode Teaser(00:24) — Welcome to the GutFit Nutrition Podcast(01:14) — Today's Episode & Our Guest (01:50) —

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00:15:30

22: Are Marathons Linked to Colon Cancer Risk? What...

The GutFit Nutrition Podcast ·

2025/09/12

Do marathons cause colon cancer? There have been several posts circulating online alongside a New York Times article about a recent study about colon cancer in long distance runners. Let’s break down the study & what you need to know about distance running and colon cancer risk! ⏱️ Chapters: (00:00) — Gut-friendly sports drink guide intro(00:40) — Welcome to the Gut Fit Nutrition Podcast(01:20) — Today’s topic: Colon cancer study in long-distance runners(02:20) — Listener reactions and episode

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00:18:44

21: Electrolyte Supplements – What’s Hype, What’s...

The GutFit Nutrition Podcast ·

2025/09/06

Today we’re diving into a topic that has been everywhere lately—electrolytes. Let’s break it down for you from a dietitian’s perspective: what electrolytes actually are, when you really need to supplement, and how they impact your gut, hormones, and hydration.By the end of the episode, you’ll know what’s hype, what’s helpful, and what’s right for you!—🌟 GRAB YOUR FREE Gut Friendly Sports Drink Guide!⁠⁠ —👩🏻‍💻 RESOURCES & LINKS MENTIONED: ⤵️📌 Electrolytes & Gut Health: What’s Hype, What’s

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01:00:44

20: Why Monash Serving Sizes Change — And How to...

The GutFit Nutrition Podcast ·

2025/08/29

Today we’re tackling a topic that sparks a lot of questions and sometimes even a bit of frustration in the IBS and low FODMAP Diet community: Why do Monash FODMAP servings keep changing?If you’re following the low FODMAP diet and felt confused when your favourite food serving suddenly changes, you’re not alone. In this episode, we’re breaking down why these changes happen, how you can stay up to date, and what this means for you if you’re following the low FODMAP diet. ⏱️ Chapters: —👤 Today’s

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00:21:25

19: Why Does Running Cause Gut Issues (And What Can...

The GutFit Nutrition Podcast ·

2025/08/22

Picture this: You’re halfway through your long run when suddenly… you need a bathroom ASAP… Sound familiar?Today we’re talking about why running can trigger digestive issues and what’s really going on in the gut. This episode is for: runners, endurance athletes with IBS or a sensitive gut, or anyone curious about the gut–exercise connection!⏱️ Chapters: (00:00) — Intro(01:23) — Today's Episode: Why Does Running Cause Gut Issues (And What Can You Do About It?)(02:25) — Support the Constantine 5K

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01:00:00

18: Gut Health Testing: What’s Under & Overrated?...

The GutFit Nutrition Podcast ·

2025/08/15

Today, we’re diving into a hot topic that many of you have asked about: gut health testing. There are so many testing options out there claiming to provide answers for your digestive issues — from food sensitivity panels to comprehensive stool tests. But how many of these are actually validated, and which ones are just burning a hole in your wallet?Whether you’re wondering about IgG food sensitivity testing, the GI-MAP stool test, or hydrogen/methane breath testing, we cover it all — plus, we share

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00:26:33

17: Morning Habits — What to Do First Thing for IBS &...

The GutFit Nutrition Podcast ·

2025/08/08

Starting your day with intentional habits that support your gut and nervous system is key to bloat relief, managing IBS symptoms and a healthy bowel routine!If you’re ready to support digestion by reducing cognitive overwhelm and setting your gut up for success (with routines you’ll actually stick to), this episode is for you!⏱️ Chapters: (0:00) — Welcome + why your morning matters for gut health(1:17) — How your first hour impacts IBS and bloating(2:44) — Starting with mindful wake-ups(4:17) —

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01:08:17

16: Gut Check: Is Your Microbiome Holding Back Your...

The GutFit Nutrition Podcast ·

2025/08/01

Today, we’re exploring a topic that bridges the gap between your gut microbiome and your body goals: how your gut health can influence sports performance and body composition.We know the gut microbiome plays a critical role in digestion and immunity — but emerging research is revealing its powerful impact on everything from how we build muscle, manage body fat, and recover from training, to how we perform during endurance activities and high-intensity workouts.⏱️ Chapters: (0:27) – Intro(1:55) –

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00:17:46

15: Bloat Culprits — Should I Skip Carbonated Drinks,...

The GutFit Nutrition Podcast ·

2025/07/25

In this episode, we address a listener's question about common bloating culprits like carbonated drinks, straws, and smoothies. We dive into the science behind bloating, distinguishing it from distension, and explores various causes such as gas-producing foods, constipation, and microbiome imbalances. We discuss practical advice on managing these triggers and emphasizes the importance of personalized approaches to gut health.⏱️ Chapters: —👩🏻‍💻 RESOURCES & LINKS MENTIONED: ⤵️📌 Gut Harmony

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01:15:26

14. Pelvic Pain, Leaking, Urgency? Creating a...

The GutFit Nutrition Podcast ·

2025/07/18

If you’ve been feeling frustrated, limited, or even afraid to move because of pelvic floor symptoms like leaking, urgency or pelvic pain — you’re not alone. These symptoms are common especially in those dealing with gastrointestinal issues like IBS, IBD and endometriosis. This episode will give you hope, validation, and the tools to start rebuilding trust in your body.⏱️ Chapters: (0:00) – Intro(2:18) – Meet the Guest: Courtenay Pollock, Exercise Physiologist(3:06) – What Is an Exercise Physiologist

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01:09:41

13: Digestive Distress & Period Pain? The IBS and...

The GutFit Nutrition Podcast ·

2025/06/20

Endometriosis affects 1 in 10 women, yet many still go years without answers. Symptoms can range from intense pelvic pain and painful periods to bloating, bowel and bladder issues, fatigue, infertility, and more. And for those with IBS, it can be incredibly confusing to tease apart what’s gut-related and what might be something more. In today’s episode we will chat about what endometriosis is, the link with IBS and gut health, and how to seek support if you suspect you have endometriosis alongside

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