Why Endurance Athletes Struggle with GI Issues (And How to Actually Fix Them) episode artwork

EPISODE · May 14, 2026 · 1H 16M

Why Endurance Athletes Struggle with GI Issues (And How to Actually Fix Them)

from The Eat for Endurance Podcast · host Claire Shorenstein, MS RD CSSD with Kylee Van Horn, RDN

In episode 137 of The Eat for Endurance Podcast, I’m joined by Sports Dietitian Kylee Van Horn, RDN for a deep dive into one of the most common (and frustrating) challenges endurance athletes face… GI issues.From nausea and vomiting to bloating, cramping, and diarrhea, GI symptoms can seriously impact training, racing, and confidence around fueling. The tricky part? It’s usually not just one thing causing the problem.Kylee and I discuss:Why GI issues are so common during endurance exerciseThe difference between upper vs. lower GI symptomsWhy you may need to stop blaming the gelsCommon fueling and hydration mistakes that contribute to GI distressThe role of underfueling and low energy availabilityGut training and improving carb tolerance during exerciseFueling considerations for marathons, triathlons, and ultrasWhen GI symptoms may warrant further medical evaluationWhile GI challenges are common in endurance athletes, they are not something you just have to accept as “normal.” With the right strategy, support, and a bit of troubleshooting, most athletes can significantly improve their symptoms.🎧 Tune in to hear the full conversation!Links & ResourcesFollow Kylee on Instagram, visit her website, and check out her podcast, Your Diet SucksCheck out my new sponsor, Tailwind Nutrition: Use code EATFORENDURANCE20 for 20% off your first purchaseCheck out my podcast sponsor, Good Ranchers: Use code IRON for $40 off a one-time box or $100 off your first 3 boxes if you subscribe (enter "Eat for Endurance Podcast" in the post-purchase survey)Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)Check out my free nutrition downloadsSupport the podcast by shopping all my affiliate links and joining my Patreon communityInterested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)Have a topic you’d like to request? Email me at [email protected] this episode? Please leave a 5-star review and subscribe to help more athletes fuel better!Disclaimer: All information provided is for educational and entertainment purposes only and is not a substitute for individualized medical or nutrition recommendations.Want to get in touch? Send Claire a message!Support the showThanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

In episode 137 of The Eat for Endurance Podcast, I’m joined by Sports Dietitian Kylee Van Horn, RDN for a deep dive into one of the most common (and frustrating) challenges endurance athletes face… GI issues. From nausea and vomiting to bloating, cramping, and diarrhea, GI symptoms can seriously impact training, racing, and confidence around fueling. The tricky part? It’s usually not just one thing causing the problem. Kylee and I discuss: Why GI issues are so common during endurance ex...

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Why Endurance Athletes Struggle with GI Issues (And How to Actually Fix Them)

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This episode is 1 hour and 16 minutes long.

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This episode was published on May 14, 2026.

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In episode 137 of The Eat for Endurance Podcast, I’m joined by Sports Dietitian Kylee Van Horn, RDN for a deep dive into one of the most common (and frustrating) challenges endurance athletes face… GI issues.From nausea and vomiting to bloating,...

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