DiscoverThe GutFit Nutrition Podcast19: Why Does Running Cause Gut Issues (And What Can You Do About It?)
19: Why Does Running Cause Gut Issues (And What Can You Do About It?)

19: Why Does Running Cause Gut Issues (And What Can You Do About It?)

Update: 2025-08-22
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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: 

  • (01:23 ) — Today's Episode: Why Does Running Cause Gut Issues (And What Can You Do About It?)
  • (02:25 ) — Support the Constantine 5K Run For CAMH Foundation
  • (03:52 ) — What Causes Digestive Symptoms During Runs?
  • (04:58 ) — What Happens to Blood Flow During Exercise
  • (05:37 ) — The Role of Pelvic Floor and Mechanical Jostling
  • (06:29 ) — Cortisol, Inflammation, and Gut Permeability
  • (7:47 ) — Pre-Run Nutrition Mistakes
  • (9:48 ) — What You Can Do About It
  • (10:17 ) — Timing Pre-Run Meals & Snacks
  • (11:39 ) — Hydration Strategies
  • (12:14 ) — Electrolyte Solutions & Sodium Type
  • (14:11 ) — Fueling During Long Runs
  • (15:11 ) — Planning Your Running Route
  • (15:47 ) — Pelvic Floor & Strength Training
  • (16:45 ) — Supporting Gut Health & Bowel Routine
  • (20:20 ) — Closing Notes


🤝 SUPPORT THE CAMH FOUNDATION FOR THE CONSTANTINE YORKVILLE 5K: ⤵️

https://raceroster.com/events/2025/96738/2025-constantine-yorkville-run/pledge/participant/38848322


👩🏻‍💻 RESOURCES & LINKS MENTIONED: ⤵️

📌 ⁠⁠⁠Apply For Coaching⁠⁠⁠

📌 Electrolytes & Gut Health: What’s Hype, What’s Helpful, and What’s Right For You?

📌 Creating a Therapeutic Exercise Plan With Pelvic Floor Dysfunction With Courtenay Polock 


✉️ CONNECT WITH ME: ⤵️

📱⁠⁠⁠⁠Follow on Instagram⁠⁠⁠

🎁 ⁠⁠⁠Grab a Freebie!⁠⁠⁠ 

🖥️ ⁠⁠ Shop the Resource Suite⁠⁠⁠

If the GutFit Nutrition Podcast is giving you value - helped your digestion and fitness, made you rethink how you approach your gut health, please consider leaving a review! 🎧 

If you have questions for my listener Q & A episodes, you can submit them here, or send me an email at ⁠leigh@leighmerotto.com⁠. See you soon!

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19: Why Does Running Cause Gut Issues (And What Can You Do About It?)

19: Why Does Running Cause Gut Issues (And What Can You Do About It?)

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