Leigh Merotto, Dietitian | IBS, Gut Health and Fitness Expert
The GutFit Nutrition Podcast
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 thrive in your active life with whole body, REAL science-based tools — this is the show for you!
Author
Leigh Merotto, Dietitian | IBS, Gut Health and Fitness Expert
Category
Podcast website
Latest episode
Jul 10, 2026
Where to listen?
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Episodes
35: Cortisol, Burnout and Adrenal Fatigue— What's Really Happening? Sifting Myth from Fact 12.12.2025 1:05:21
Is 'adrenal fatigue' a made up condition, or a useful term to describe real burnout and cortisol dysfunction? In this conversation, join myself and fellow Dietitian Christa Biegler to discuss the complexities of cortisol, burnout, and adrenal fatigue. We chat about causes of cortisol dysfunction, how to test thyroid and cortisol properly, pillars for improving adrenal function, and more. ...
34: Why the Holidays Stir Up IBS Symptoms (and What You Can Do About It) 05.12.2025 23:52
Its no surprise.. The holidays can stir up IBS symptoms due to various factors. Listen in to discover proactive strategies to prevent holiday IBS flare-ups and feel your best. — 👩🏻💻 RESOURCES & LINKS MENTIONED: ⤵️ 📌 FREE Masterclass — Take Immediate Control: The Ultimate 6-Step Blueprint to Conquering IBS & Gut Pain — ✉️ CONNECT WITH ME: ⤵️ 📱 Follow on Instagram 🎁 Grab a...
33: Eating to Improve IBS Through Your Microbiome 29.11.2025 26:15
What is the gut microbiome, why does it matter? If you have IBS, feeding your microbiome is essential for lasting symptom relief! How do you feed it well (when you have IBS and food intolerances)? Find out in today’s episode. — 👩🏻💻 RESOURCES & HELPFUL LINKS: ⤵️ 📌 Apply for the Gut Harmony Method Program 📌 How Does Your Gut Microbiome Play a Role in 4 Common Chronic Diseases? 📌 The Amer...
32: Which Probiotic Really Helps IBS? Here's What the Science Says 21.11.2025 24:24
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. — 👩🏻💻 RESOURCES & LINKS MENTIONED: ⤵️ 📌 Benefits of Fermented Foods 📌 Episode 16: Gut Check– Is...
31: IBS Symptoms Disappear When You Travel to Europe? Let's Unpack Why 14.11.2025 28:46
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) — Epi...
30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability 07.11.2025 52:10
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: (0:00) — Episode Teaser (0:39) — Welcome to the GutFit Nutrition Podcast (1:27) — Today'...
29: High Intensity Training For a Happy Gut & Balanced Hormones 01.11.2025 38:49
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 digesti...
28: Beyond the Bloat — 6 Step Roadmap to IBS Relief (Masterclass Recap + Q&A) 23.10.2025 35:14
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 importa...
27: 5 Things I Would Do If I Was Diagnosed With IBS Today 17.10.2025 17:51
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. — Ready for high touch support for IBS? 👩🏻💻 Doors open with special discount + bonuses for my Gut Harm...
26: Struggling With IBS? 5 Things That Might Be Stopping You From Getting Better 10.10.2025 22:09
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. — ✉️ CONNECT WITH ME: ⤵️ 📱 Follow on Instagram 🎁 Grab a Freebie! 🖥️ Shop the Resource Suite 👩🏻⚕️ Apply For Coaching If the GutFit Nutrition Podcast is giving you value...
25: Food Intolerances in IBS & How To Use Enzymes with Anouk Martini, Intoleran Dietitian 03.10.2025 47:09
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 &...
24: Understanding the Gastrocolic Reflex and Your IBS — Managing Urgency After Eating 26.09.2025 10:58
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! If you have IBS and bathroom urgency like loose stools and diarrhea, this one's for you. — 📌 Grab Your FREE Beat the Bloat Cheet Sheat! You'll also be added to my email list to be th...
23: Gut-Skin Connection — Healing Eczema and Fungal Skin Rashes Beyond Steroids & Medications 19.09.2025 58:12
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 Tea...
22: Are Marathons Linked to Colon Cancer Risk? What Runners Need to Know 12.09.2025 15:30
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) — Grab the Gut-Friendly Sports Drink Guide! (00:38) — Welcome to the Gut Fit Nutrition Podcas...
21: Electrolytes for Gut Health & Performance: A Science-Based Guide for Active Bodies 06.09.2025 19:01
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! ⏱️ Chapters: (00:00) — Free Gut Friendly Spo...
20: Why Monash Serving Sizes Change — And How to Confidently Follow the Low FODMAP Diet With Dede Wilson 29.08.2025 1:00:44
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...
19: Why Does Running Cause Gut Issues (And What Can You Do About It?) 22.08.2025 21:25
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 Epi...
18: Gut Health Testing: What’s Under & Overrated? 15.08.2025 1:00:00
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 sensiti...
17: Morning Habits — What to Do First Thing for IBS & Bloating Relief 08.08.2025 26:33
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 heal...
16: Gut Check: Is Your Microbiome Holding Back Your Fitness Goals? 01.08.2025 1:08:17
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 w...
15: Bloat Culprits — Should I Skip Carbonated Drinks, Using a Straw, & Drinking Smoothies? 25.07.2025 17:46
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 perso...
14: Training With Pelvic Floor Dysfunction – How to Build a Safe, Effective Plan 18.07.2025 1:14:40
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! ❤️ — 👤 Today’s Guest: Court...
13: Digestive Distress and Period Pain: The IBS–Endometriosis Link Explained 20.06.2025 1:09:41
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...
12: Should I Use Digestive Enzymes For Meals That Could Trigger My IBS or Gut Symptoms? 13.06.2025 8:53
Told to take digestive enzymes to help with your IBS, or combat meals you think might trigger your gut symptoms? Let’s dive into another listener question in this week’s episode! We discuss what digestive enzymes are, which ones are helpful for various intolerances (FODMAPs, lactose, etc.) and which you might want to consider (and skip!). — 👩🏻💻 RESOURCES & LINKS MENTIONED: ⤵️ 📌 FODZYME:...
11: Why Does Fibre Make my IBS Symptoms Worse? 06.06.2025 7:43
In episode 11, we’re answering the question “Why does fibre make my IBS symptoms worse”? You’ve heard (or been told) that fibre is good for you - it can solve all your IBS problems! And yet, when you eat more, you get more gas, pain and bloating. What gives? We dive into why this happens, and what you can do about it in today’s episode. — 👩🏻💻 RESOURCES & LINKS MENTIONED: ⤵️ 📌 Visceral H...
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