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September 13, 2025 41 mins

After receiving many questions about weight loss for runners, we decided to bring on a performance dietitian to discuss this delicate topic. Lydia Nader-Urdiales is a registered dietitian who has worked with runners on their performance and body composition goals - and is a runner herself. She discusses how weight loss can be achieved without spiking your injury risk or sacrificing your performance - and some of this discussion may surprise you.


Thank you to our sponsors:

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In this episode, you will learn:

✅ Body positivity and body neutrality

✅ Can you lose weight while training for a marathon?

✅ How to safely approach weight loss as a runner

✅ Why you still need to fuel your runs even if weight loss is a goal

✅ Why do some runners gain weight during marathon training? (Hint: it’s not always fat mass gain)

✅ How to know if you are in too deep of a caloric deficit

✅ Does running help or hinder weight loss?

✅ Should runners consider using GLP-1 medications?

✅ Common mistakes to avoid for weight loss/management


About our guest:

🔗 Connect with Lydia at https://fuelwithnader.com/

🔗 Follow Lydia on IG at @fuelwithnader


Let’s stay connected:

➡️ Tread Lightly Running Podcast on Instagram: https://www.instagram.com/treadlightlyrunning/

➡️ Laura Norris Running on Instagram: https://www.instagram.com/lauranorrisrunning/

➡️ Hundreds of evidence-based training tips on Laura’s website: https://lauranorrisrunning.com/

➡️ Run to the Finish on Instagram: https://www.instagram.com/runtothefinish/?hl=en

➡️ Thousands of running gear reviews and training guides:

https://runtothefinish.com/

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