DiscoverThe GutFit Nutrition Podcast30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability
30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability

30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability

Update: 2025-11-07
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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's Episode & Announcing Our Guest  
  • (2:27 ) — Christine's Background & Career Journey
  • (10:07 ) —  Understanding LEA: The Hidden Cost of Underfuelling
  • (15:08 ) — Chronic Underfuelling: The Dangers of RED-S
  • (23:44 ) — How Underfuelling Harms Your Gut & Digestion
  • (29:32 ) —  The Gut Impact of Fasted Training & Dehydration
  • (31:53 ) — Why Underfuelling Can Hinder Weight Loss Goals
  • (36:30 ) —  Practical Ways to Assess Your Energy Needs
  • (44:52 ) —  Debunking Sensitivity Tests 
  • (47:19 ) —  Closing Remarks & Connecting with Christine


👤 Today’s Guest: Christine Gemmell, RD

Christine Gemmell is a Registered Dietitian and sports nutrition specialist based in Kingston, Ontario. In her practice Eminence Nutrition, she integrates evidence-based sports nutrition with a weight-inclusive, health-first philosophy that supports not only physical performance but also a sustainable and confident relationship with food.

📌Eminence Nutrition Website

📌 Christine's Instagram


👩🏻‍💻 RESOURCES & LINKS MENTIONED: ⤵️

📌 Article: High Intensity Exercise & Your Gut

📌 Pre & Post Workout For a Happy Gut Guide


✉️ CONNECT WITH ME: ⤵️

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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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30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability

30: Is Underfuelling Wrecking Your Gut? Understanding RED-S and Low Energy Availability

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