The Eat for Endurance Podcast

Latest Episodes:

Your Iron Questions, Answered: Everything Athletes Need to Know Jul 02, 2026

Show notes

Iron deficiency is one of the most misunderstood nutrition issues affecting active people, and it's a lot more complicated than a single lab value.

In episode 140 of The Eat for Endurance Podcast, I'm joined by fellow Sports Dietitian Callie Roseland, MS, RDN, CSSD to break down everything you need to know about iron and ferritin as an active person.

Callie and I discuss:

The difference between iron deficiency and anemia
Who's most at risk
Common signs and symptoms of low iron and ferritin
Which blood tests to order
Why "normal" lab values aren't always optimal
What low ferritin but "normal" iron actually means
How gut health as well as different foods influence iron absorption
How much iron you need from food, plus meal/snack ideas
When supplementation makes sense
Iron supplement timing and practical strategies

Callie's mantra throughout the episode is simple but powerful: "Test, don't guess."

Understanding WHY your iron is low is what allows you to address the root cause, not just mask symptoms with a supplement.

Tune in for the full breakdown on testing, supplementation, and nutrition strategies to support healthy iron and ferritin levels.

Links & Resources

Follow Callie on Instagram and visit her website
Support my sponsor Tailwind Nutrition: Use code EATFORENDURANCE20 for 20% off your first purchase
Support my 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 downloads
Support the podcast by shopping all my affiliate links and joining my Patreon community
Interested 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 claire@eatforendurance.com

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

Grayson Murphy on Crohn's Disease, Performance Anxiety, and Fueling as a Pro Runner Jun 11, 2026

Show notes

First, a huge congratulations to Grayson and her husband on the recent birth of their daughter, Violet! At the time of recording, she was just days away from becoming a first-time mom, and I couldn't be more excited for them.

In episode 139 of The Eat for Endurance Podcast, I’m joined by professional trail runner and two-time World Mountain Running Champion Grayson Murphy.

Grayson has dealt with her fair share of challenges as an athlete, including an eating disorder in high school, years of unexplained GI issues that ultimately led to a Crohn's disease diagnosis, performance anxiety, and most recently, training and fueling through pregnancy as a professional runner.

Despite all of that, she has kept showing up to start lines, and winning, while learning how to fuel better, advocate for her health, and navigate the ups and downs that come with being human.

Grayson and I discuss:

Her transition from soccer to collegiate and eventually professional running
Years of unexplained GI symptoms, misdiagnoses, and the road to finally getting answers
Training and race-day fueling strategies, including for athletes with Crohn's disease
Tried and tested strategies to alleviate performance anxiety
Therapy, medication, and other mental health tools that have helped her
Her move from sub-ultra distances to the 50K
Training and fueling through pregnancy as a professional athlete

Whether you're navigating a chronic illness, have felt dismissed by a healthcare provider, or want to fuel smarter and show up to race day with less anxiety, this episode is for you.

🎧 Grab your headphones, because this is a good one!

Links & Resources

Follow Grayson on Instagram and visit Wild Strides Paper Co.
Check out my new sponsor, Tailwind Nutrition: Use code EATFORENDURANCE20 for 20% off your first purchase
Check 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 downloads
Support the podcast by shopping all my affiliate links and joining my Patreon community
Interested 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 claire@eatforendurance.com

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

What Is Food Noise? A Dietitian's Personal Experience with GLP-1 Medications May 28, 2026

Show notes

GLP-1 medications are taking the world by storm, but the conversations surrounding them can lack nuance. That’s why I’m doing a 3-part podcast series with three different dietitians all about these drugs.

ICYMI, we kicked things off with GLP-1 Medications: What Active People Need to Know.

The series continues in episode 138 with Summer Kessel, RD, CSOWM, a Certified Specialist in Obesity and Weight Management and GLP-1 nutrition expert. Summer also has personal experience taking GLP-1s herself, which brings a unique perspective to this conversation.

Summer and I discuss:

What food noise is, and how it differs from hunger or cravings
Her personal experience with obesity, weight loss, and taking GLP-1s
Overlap between food noise, chronic dieting, and disordered eating patterns
Who should (and shouldn't) be on these drugs
Risks and benefits of GLP-1 use in different populations
Why inappropriate GLP-1 use cases shouldn't overshadow people who genuinely need these drugs
How weight stigma and judgment can make GLP-1 conversations even more difficult
Why compassion, individualized care, and ongoing professional support matter

I hope this episode helps you better understand GLP-1 medications and the experiences of those who use them. I know this is a controversial topic...questions and feedback are always welcome (claire@eatforendurance.com)!

🎧 Tune in for the full conversation!

Links & Resources

Follow Summer on Instagram, visit her website, and buy her book
Check out my sponsor, Tailwind Nutrition: Use code EATFORENDURANCE20 for 20% off your first purchase
Check out my 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)
Support the podcast by shopping all my affiliate links and joining my Patreon community
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Interested in 1:1 coaching? Fill out a new client inquiry form

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

Why Endurance Athletes Struggle with GI Issues (And How to Actually Fix Them) May 14, 2026

Show notes

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 exercise
The difference between upper vs. lower GI symptoms
Why you may need to stop blaming the gels
Common fueling and hydration mistakes that contribute to GI distress
The role of underfueling and low energy availability
Gut training and improving carb tolerance during exercise
Fueling considerations for marathons, triathlons, and ultras
When GI symptoms may warrant further medical evaluation

While 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 & Resources

Follow Kylee on Instagram, visit her website, and check out her podcast, Your Diet Sucks
Check out my new sponsor, Tailwind Nutrition: Use code EATFORENDURANCE20 for 20% off your first purchase
Check 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 downloads
Support the podcast by shopping all my affiliate links and joining my Patreon community
Interested 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 claire@eatforendurance.com

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

How Much Protein Should Athletes Actually Eat? Apr 30, 2026

Show notes

In episode 136 of The Eat for Endurance Podcast, I’m joined by Holley Samuel MEd, RD, CSSD, CPT to break down one of the most talked-about topics in the nutrition world right now… protein!

From social media trends to grocery store shelves, protein is everywhere these days. And while it is essential for performance, recovery, and overall health, the messaging around it has left a lot of athletes confused about how much they actually need.

In this episode, we cut through the noise and bring the conversation back to what matters most... having a balanced approach to fueling that fits your unique needs and active lifestyle.

Holley and I discuss:

Why protein is everyone's favorite macro right now
General protein targets for athletes (and why more isn’t always better)
How protein needs change across life stages and training demands
Animal vs. plant protein and what athletes should know about both
Common protein myths and where recommendations go wrong
Protein timing considerations
When protein supplements can be helpful (and when they’re not)

The bottom line is: protein matters, but so does everything else on your plate (especially my favorite… CARBS!).

🎧 Tune in to hear the full conversation!

Links & Resources

Follow Holley on Instagram and visit her website
Check out my new sponsor, Good Ranchers: Use code IRON for $40 off a one-time box or $100 off your first 3 boxes when you sign up for a subscription (enter "Eat for Endurance Podcast" in the post-purchase survey)
Fill out my podcast survey by May 15th, and enter to win some great prizes
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Check out my free nutrition downloads
Support the podcast by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous, Fuel Goods) and joining my Patreon community
Have a topic you’d like to request? Email me at claire@eatforendurance.com

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

GLP-1 Medications: What Active People Need to Know Apr 16, 2026

Show notes

GLP-1 medications are everywhere right now, but the conversation around them often lacks nuance and is rarely discussed through the lens of active people. That’s exactly why I’m doing a 3-part podcast series all about GLP-1 medications, with athletes in mind.

In this series, you’ll hear from three dietitians who regularly work with GLP-1 agonists and each bring a unique clinical and personal perspective to the conversation.

I'm kicking things off in episode 135 with Courtney Smith, MS, RD, CDCES, a sports dietitian, diabetes specialist, and longtime endurance athlete.

Together, we break down the basics of GLP-1 medications and what active people need to know in the context of training and health.

Courtney and I discuss:

The history of GLP-1 medications, especially in diabetic populations
Why they have exploded in popularity in recent years
How the various drugs on the market differ, plus dosing practices
The benefits and side effects she's observed in practice
How crucial it is to get ongoing professional support when on GLP-1's, and why you still need to work on diet & lifestyle changes
Why she generally does not recommend GLP-1 drugs for most athletes

If you’ve been hearing about GLP-1 medications and wondering how they may affect your training, fueling, recovery, blood sugar, or overall health as an active person, this episode will answer your questions while laying an important foundation for the rest of the series to come.

🎧 Tune in for the full conversation!

Links & Resources

Follow Courtney on Instagram and visit her website
Check out my new sponsor, Good Ranchers: Use code IRON for $25 off a subscription (enter "Eat for Endurance Podcast" in the post-purchase survey)
Fill out my podcast survey by May 15th, and enter to win some great prizes
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Check out my free nutrition downloads
Support the podcast by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous, Fuel Goods) and joining my Patreon community
Have a topic you’d like to request? Email me at claire@eatforendurance.com

Enjoyed 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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

From PowerBar to JAMBAR: Jennifer Maxwell on Fueling Athletes, Raising 6 Kids, and Life Beyond Running Apr 02, 2026

Show notes

What happens when your identity as an athlete evolves, but your passion for movement, innovation, and challenge stays the same?

In episode 134 of The Eat for Endurance Podcast, I’m joined by Jennifer Maxwell, co-founder of PowerBar and creator of JAMBAR, to talk about running, entrepreneurship, fueling a large, active family, and finding new passions later in life.

Jennifer helped launch the global bar category back in 1985 with her husband, long before fueling strategies became a core part of endurance performance. But this conversation goes far beyond the history of energy bars.

Jennifer and I discuss:

How she ran her first marathon at the age of 13
Her early interest in cooking and food science
What it was like building PowerBar out of her apartment while still in college
How she balanced running a business, training, and raising 6 children
How her relationship with running changed after having kids, and especially after her husband's sudden death in 2004
Why learning the drums later in life became such an important outlet
What inspired her return to the bar business decades later with JAMBAR

Jennifer’s story is a powerful reminder that your identity is never fixed. How you move and fuel your body as well as how you spend your time is meant to evolve across different seasons of life.

🎧 Tune in to hear the full conversation!

Note: This podcast is NOT sponsored by JAMBAR. I just wanted to share Jenny's unique story!

Links & Resources

Visit the official JAMBAR website
Fill out my podcast survey by May 15th, and enter to win some great prizes
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Grab my Eat for Endurance Mini Guide Bundle (these are included in FLC)
Check out my free nutrition downloads
Support the podcast by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous) and joining my Patreon community
Have a topic you’d like to request? Email me at claire@eatforendurance.com

Enjoyed this episode? Please leave a 5-star review and subscribe to help more athletes fuel smarter!

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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

Why Thyroid Health Matters for Athletes Mar 19, 2026

Show notes

What if your low energy or stubborn performance plateau have little to do with your training, and everything to do with your thyroid?

In episode 133 of The Eat for Endurance Podcast, I’m joined by Katie Morra, MS, RD, LDN, IFMCP, to talk all about thyroid health for athletes.

Katie is a Registered Dietitian and former Division 1 athlete who specializes in complex chronic illness. Her practice, Gut Honest Truth, focuses on the identification and treatment of root causes behind chronic inflammatory conditions, autoimmune disease, gastrointestinal dysfunction, and thyroid dysfunction.

In this episode, Katie and I discuss:

What the thyroid actually does and how it impacts almost everything in the body
Common signs of thyroid dysfunction in active people
The connection between underfueling, stress, and thyroid function
Why looking at TSH alone doesn’t tell the full story, and what you should get tested instead
Key nutrients for thyroid health
How gut health impacts nutrient absorption and thyroid function
When someone may need thyroid medication
The difference between Hashimoto’s and hypothyroidism caused by underfueling
Practical nutrition and lifestyle strategies to support the thyroid

This is a complex topic and we only scratch the surface, but it’s a really helpful starting point if you’ve ever wondered whether your thyroid could be playing a role in how you feel or perform.

🎧 Tune in to hear the full conversation!

Links & Resources

Follow Katie on Instagram, read the Gut Honest Truth Blog (more info on thyroid), and visit GHT Academy (for clinicians)
Fill out my podcast survey by May 15th, and enter to win some great prizes
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Grab my Eat for Endurance Mini Guide Bundle (these are included in FLC)
Check out my free nutrition downloads
Support the podcast by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous) and joining my Patreon community
A listener requested this topic! If you have a topic you'd like to request, get in touch at claire@eatforendurance.com

Enjoyed this episode? Please leave a 5-star review and subscribe to help more athletes fuel smarter!

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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

Sports Nutrition Trends for 2026: What’s In, What’s Overhyped, and What Athletes Actually Need with Meghann Featherstun Mar 05, 2026

Show notes

With so many new sports nutrition brands and supplements hitting the market each year, how do you know what’s actually worth using?

In Episode 132 of The Eat for Endurance Podcast, I’m joined by Sports Dietitian Meghann Featherstun of Featherstone Nutrition for a timely conversation about sports nutrition trends for 2026.

After attending The Running Event (TRE), Meghann brings a behind-the-scenes perspective on where performance fueling seems to be headed, which products stood out, and what felt overhyped.

Meghann also wrote an entire blog post on her findings, which you can check out here.

In this episode, Meghann and I discuss:

What to look for when choosing a gel, chew, sports drink, or other sports fueling product
How there's no one "right" way to create a training or race fueling plan
The biggest sports nutrition trends showing up across brands right now, including changing amounts of carbs, caffeine, and sodium
Non-US sports nutrition brands that caught her eye
Why high carb fueling is not appropriate for all athletes
The importance of being intentional with supplementation
And so much more!

🎧 Tune in to learn how to evaluate sports nutrition trends through an evidence-based lens and make smarter fueling decisions for your training and racing.

Links & Resources

Follow Meghann Featherstun on Instagram and visit Meghann's Website
Fill out my podcast survey by May 15th, and enter to win some great prizes
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew, for just $39/month (cancel anytime)
Browse my library of nutrition masterclasses (all are included inside the Fuel for Life Crew membership)
Grab my Nutrition Mini Guide Bundle
Check out my free nutrition downloads
Support this FREE content by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous), buying my fueling stickers, and joining my Patreon community
Get in touch at claire@eatforendurance.com

Enjoyed this episode? Please leave a 5-star review and subscribe to help more athletes fuel smarter!

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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

Why Zach Bitter Went High Carb After 14 Years of Low Carb Fueling Feb 19, 2026

Show notes

What if the fueling strategy you’ve followed for years is no longer the one that best supports your performance?

In Episode 131 of The Eat for Endurance Podcast, I’m joined by elite ultrarunner and coach Zach Bitter for a thoughtful conversation about his experience with both low and high carb fueling.

After following a low carb diet for 14 years, including when he broke the World and American Records in the 100-mile distance, he decided to change course and try high carb fueling. It's been 8 months now of experimenting with more carbs, and so far, he’s had a very positive experience.

Zach and I discuss:

Why he originally went low carb as a younger ultrarunner
What his particular flavor of low carb fueling looked like in practice
What motivated him to dramatically increase his carb intake last year
How high carb fueling has influenced his recent training and racing
Why you shouldn't make one single diet your whole identity
The importance of curiosity and flexibility for long-term health and performance

This episode is full of nuance, and underscores the fact that there is no one-size-fits-all diet. As Zach says in the episode, don't be afraid to try something new, because if it doesn't work out, you can always go back to what you were doing before!

🎧 Tune in to learn more!

Links & Resources

Follow Zach Bitter on Instagram and visit Zach’s Website
Interested in comprehensive, in-depth 1:1 coaching? Fill out a new client inquiry form (limited spots available)
Join my membership, Fuel for Life Crew for just $39/month (cancel anytime)
Grab my Nutrition Mini Guide Bundle (a collection of 6 mini guides, worksheets, and a bonus supplement resource)
Check out my free nutrition downloads
Support the podcast by shopping all my affiliate links (e.g. Skratch, Tailwind, Momentous) and joining my Patreon community
Get in touch at claire@eatforendurance.com

Enjoyed this episode? Please leave a 5-star review and subscribe to help more athletes fuel smarter!

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 show

Thanks for listening! Follow me on Instagram and Facebook (@eatforendurance).

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