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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

00:41:49

50: Marathon Training: How to Prevent Gut Issues +...

The GutFit Nutrition Podcast ·

2026/03/27

Struggling with gut issues during marathon training? From bloating and reflux to urgent bathroom stops mid-run, digestive issues affect up to 50% of endurance athletes—and they can seriously impact your performance if not addressed.As a Registered Dietitian and endurance athlete, I’m sharing both the science and real-life strategies I use (and teach my clients) to prevent gut issues during training, so you can perform your best without digestive setbacks.YOU’LL TAKEAWAY: ✅ Why gut issues are so

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00:28:43

49: My Top 8 Positivity Tools For Gut Health & Mental...

The GutFit Nutrition Podcast ·

2026/03/21

If you’ve been feeling anxious, overwhelmed, or mentally drained lately, this episode is for you.As a Registered Dietitian specializing in gut health, I’m diving into the powerful gut-brain connection and sharing my top positivity resources — including books, exercises, and simple tools that can help you boost your mood naturally, support your mental health, and improve how your body feels from the inside out.YOU’LL TAKEAWAY: ✅ A deeper understanding of the gut-brain connection and its impact on

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00:25:22

48: 6 Ways to Stay Healthy While Seeking Weight Loss...

The GutFit Nutrition Podcast ·

2026/03/13

Trying to seek weight loss goals without sacrificing energy, your health and tanking your metabolism? In this episode, I’m sharing 6 practical tips to stay healthy while losing weight, and why your gut microbiome may play an important role in weight management and body composition!There’s a lot of conflicting advice online about weight loss. As a Registered Dietitian, I take a weight-neutral approach and focus on strategies that support long-term metabolic health, energy, and healthy body

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00:43:43

47: Nickel Allergy & IBS: The Connection You Need to...

The GutFit Nutrition Podcast ·

2026/03/06

If your IBS symptoms aren’t improving on a low FODMAP diet, there may be an overlooked trigger: nickel. In this episode, we explore the interesting connection between Nickel Allergy and IBS, including a condition called Systemic Nickel Allergy Syndrome (SNAS) that can mimic classic digestive disorders like IBS!YOU'LL TAKEAWAY:✅ How Nickel Allergy and IBS may be connected through Systemic Nickel Allergy Syndrome (SNAS)✅ Why some people have IBS symptoms not improving on low FODMAP✅ Common high nickel

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00:37:09

46: Colon Cancer: Rising Rates & 5 Evidence Based...

The GutFit Nutrition Podcast ·

2026/02/28

Colorectal cancer is rising, especially early-onset colon cancer in adults under 50. But the good news is that much of your risk is modifiable.In this evidence-based episode, we break down what you need to know about colorectal cancer prevention, including the most current research on diet, lifestyle, and the gut microbiome!YOU’LL TAKEAWAY: ✅ An overview of rising early-onset colon cancer rates and what it means for colorectal cancer prevention✅ How dietary fibre and colon cancer risk are connected,

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00:29:52

45: 3 Little Known Ways to Improve Your Microbiome...

The GutFit Nutrition Podcast ·

2026/02/20

Your gut health isn’t just about what you eat! In this episode, I’m sharing 3 little-known, evidence supported ways to improve your gut microbiome that go beyond diet — and can support better digestion, mood, energy, immune resilience, and even performance!YOU’LL TAKEAWAY: ✅ What the gut microbiome is and why microbial diversity is critical for digestion, immunity, metabolism, and mental health✅ How over-sanitizing may reduce microbial resilience and how to apply a targeted hygiene approach✅ Why

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00:37:27

44: Chronic Constipation? Common Culprits & What You...

The GutFit Nutrition Podcast ·

2026/02/14

Have you tried following your doc’s recommendations and just upped the fiber and water… OR simply taken a prescription laxative like Restoralax or Miralax and a fiber supplement per the Rx, and gone on your way? But you’re still struggling with chronic constipation and irregularity…Today we’re chatting about the common — and often complex — reasons for constipation to consider, and what you can do to support those healthy daily poops. YOU’LL TAKEAWAY: ✅ 3 types of primary constipation (slow transit,

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00:19:39

43: Breaking Down 4 Viral Gut Health Trends...

The GutFit Nutrition Podcast ·

2026/02/07

Aloe vera juice. Beet juice “cleanses.” Fart walks. Fibremaxxing. But… which of these current social media trends actually holds up under scientific scrutiny? 🤔YOU’LL TAKEAWAY: ✅ Which trends are mostly hype vs. evidence-based✅ What might help IBS, and what could make symptoms worse✅ How to approach fibre strategically if you have gut issues✅ Why “science-based” on social media doesn’t always mean… science-based—👩🏻‍💻 RESOURCES & LINKS MENTIONED: ⤵️📌 Want to learn my step by step Blueprint

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00:18:14

42: 3 Ways to Improve Diet Diversity When Your IBS...

The GutFit Nutrition Podcast ·

2026/01/31

Heard that diet diversity is important for IBS and gut health but the thought of adding new foods make you anxious about how your gut will react? YOU’LL TAKEAWAY: ✨Why extreme restriction won’t make your symptoms better in the long term✨How your nervous system and gut-brain interaction impact symptoms✨Using positive self talk and transformational vocabulary to improve symptoms✨Using microdosing to retrain your gut microbes to tolerate more foods—Want to learn my step by step Blueprint to IBS &

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00:22:17

41: How Long Does it Take to "Fix" Your Gut...

The GutFit Nutrition Podcast ·

2026/01/23

You’ve been eating more fibre, started a low FODMAP diet, added some gut-directed lifestyle changes to your routine.. So how long will it take for you to “fix” your microbiome? Find out in today’s episode!YOU’LL TAKEAWAY: ✨ How long it takes for the microbiome to recover after a big disruption like antibiotics or food poisoning✨Subjective measure the microbiome is improving✨Why symptoms can improve before big microbiome shifts can occur✨ Short term vs. long term impacts of diet, supplement

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00:48:52

40: Colorectal Cancer in Your 20s, 30s, and 40s? A...

The GutFit Nutrition Podcast ·

2026/01/17

Did you know there’s been a 2% annual increase in colon cancer cases in adults aged 20-39 since the 1990s? We need to spread the word… Colorectal cancer is NO longer just a concern for older adults. But, the encouraging news is that many cases are preventable! In our latest episode, colorectal surgeon and prevention advocate Dr. Zuri Murrel shares how you can feel more confident using evidence based tools to reduce your own risk for colorectal cancer! Whether you’re in your 20s, 30s, or 40s, this

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00:30:20

39: IBS and Perimenopause — How Hormonal Changes...

The GutFit Nutrition Podcast ·

2026/01/10

Hot flashes, bloating, mood swings? In this episode we explore the connection between perimenopause and IBS, discussing how hormonal changes can impact your digestive health. We chat about common symptoms of perimenopause, the complexities of IBS, and practical strategies for managing symptoms through nutrition, exercise, and expert support. YOU’LL TAKEAWAY: ✨How ovarian hormonal fluctuations during perimenopause can affect digestion, and exacerbate IBS✨Why tracking symptoms is crucial for

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00:36:51

38: 5 Micro Habits to Level Up Your Gut Health in 2026

The GutFit Nutrition Podcast ·

2026/01/02

Your gut called… it’s ready for a glow-up in 2026 — without painful cleanses or expensive supplement protocols.In this episode of the GutFit Nutrition Podcast, we explore why gut health is foundational to your overall well-being and how simple, sustainable micro habits can support your digestion, hormones, mood, and immune system over time.YOU’LL TAKEAWAY:✨What micro habits are and how to use them to create lasting change✨Why gut health impacts immunity, mental health, and hormone balance✨How small

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00:31:22

37: New Year, New Intentions: 9 Steps to Health and...

The GutFit Nutrition Podcast ·

2025/12/26

In the latest episode of the Gut Fit Nutrition Podcast, we’re breaking down how to set realistic gut health & fitness goals that stick — including:✨ Setting intentions instead of resolutions✨ Creating SMART goals for clarity✨ Linking pleasure to behaviors to stay motivated✨ Using accountability systems to actually follow through✨ Celebrating small wins along the wayIf you’re ready to finally make progress on your health and fitness goals instead of falling off by February… This episode is for

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00:55:06

36: Runny Nose, Fatigue, Bloat, Rashes? Unpacking...

The GutFit Nutrition Podcast ·

2025/12/19

Itchy skin, fatigue, unresolved IBS symptoms – what could these symptoms have in common? It could be a sign of histamine intolerance, a condition that often goes under or misdiagnosed.Join this conversation with expert GI Dietitians on how to actually tell whether you may have histamine intolerance, and how to actually manage it through a structured elimination diet, nutrition optimizations & targeted supplementation. YOU’LL TAKEAWAY:✨ Why histamine intolerance is a growing concern in digestive

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01:05:21

35: Cortisol, Burnout and Adrenal Fatigue— What's...

The GutFit Nutrition Podcast ·

2025/12/12

Is “adrenal fatigue” a real thing? 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. ⏱️ Chapters: (0:38) — Welcome to the GutFit Nutrition Podcast(1:26) — Today's Episode & Announcing Our Guest(1:57) — Christa’s Background & Career Journey(2:27) — Unpacking

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00:23:05

34: Conquering Holiday IBS — Tips For a Happy Gut

The GutFit Nutrition Podcast ·

2025/12/05

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. ⏱️ Chapters: —👩🏻‍💻 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 Freebie!⁠⁠⁠ 🖥️ ⁠⁠ Shop the Resource Suite⁠⁠⁠👩🏻‍⚕️ ⁠⁠⁠Apply For Coaching⁠⁠⁠If the GutFit

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00:25:08

33: From Bloating to Balance: Eating to Improve IBS...

The GutFit Nutrition Podcast ·

2025/11/29

What is the gut microbiome, why does it matter, and—most importantly—how do you feed it well (when you have IBS)? Find out in today’s episode. ⏱️ Chapters: (00:00) — Welcome to the Gut Fit Nutrition Podcast(00:48) — Today’s Episode: Your Gut Microbiome(02:05) — How Your Microbiome Impacts Your Health(03:08) — Defining a Healthy Microbiome(04:09) — Dysbiosis: When Things Go Out of Balance(06:10) — Factors That Influence Your Gut Microbiome(08:16) — MACs: Microbiota Accessible Carbohydrates(10:27) —

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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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