35: The Science of Gut Issues in Endurance Sports

This conversation delves into the common gastrointestinal (GI) issues faced by endurance athletes, exploring the various factors that contribute to these problems, including individual variability, environmental conditions, psychological stress, and nutritional strategies. Patrick Wilson shares insights from his research, emphasizing the importance of understanding one's body and the need for tailored nutrition plans to mitigate GI distress during training and competition. The discussion also highlights the role of sodium and hydration, common mistakes athletes make, and when to seek medical advice for persistent symptoms.00:00 Understanding GI Issues in Endurance Athletes02:47 Individual Factors Influencing GI Problems05:24 The Role of Environmental Conditions08:03 Psychological Impact on GI Distress11:08 Nutritional Considerations for GI Health16:47 Strategies for Managing GI Issues During Races26:44 Understanding Nausea in Endurance Sports29:16 The Role of Experience in Gut Health30:26 Cycling vs. Running: Gut Issues Explored32:02 Timing of Gastrointestinal Symptoms34:22 Sodium and Electrolyte Trends in Endurance36:13 The Science Behind Sodium Supplementation38:08 Bloating and Digestive Distress in Athletes42:13 When to Seek Professional Help43:19 Golden Rules for Endurance Nutrition45:18 Future of Endurance Nutrition ResearchGuest Bio:Patrick Wilson, Ph.D., R.D. is a registered dietitian and an assistant professor of exercise science at Old Dominion University whose research zeroes in on the gut challenges that endurance athletes often face. Blending expertise in nutrition, physiology, and psychology, Patrick has become a leading voice on how exercise and fueling strategies influence digestive health, performance, and comfort.He is the author of The Athlete’s Gut: The Inside Science of Digestion, Nutrition, and Stomach Distress — a science-based guide that helps runners, cyclists, triathletes, and coaches understand, prevent, and manage gastrointestinal issues during training and competition. Through his research and book, Patrick translates complex science into practical tools for athletes striving to feel and perform their best.When he’s not teaching or writing, Patrick continues to study the mind-body-gut connection in sports, aiming to improve both health and race-day outcomes for endurance athletes.Find Patrick Wilson online:Book: The Athlete’s Gut (Human Kinetics)Research & faculty page: Old Dominion UniversityYoutubeResources Mentioned in This Episode: Apply for 1:1 Coaching with an ALN Dietitian  https://alexlarsonnutrition.comConnect with Me:Instagram: @alexlarsonnutritionWebsite: alexlarsonnutrition.comDon’t Forget to Subscribe!Click that follow button to stay updated on future episodes packed with actionable insights and expert advice for endurance athletes.Have Questions or Suggestions?Send me a message, and I might cover it in a future episode! Endurance athletes know it’s not just about the miles you put in… it’s how you fuel and recover that makes the biggest difference. Beyond the Miles is a two-lesson,  workshop that teaches you simple, strategic nutrition shifts to:Reduce fatigue and bounce back faster after trainingLower your risk of injury and improve body compositionBoost your sleep, energy, and mood day-to-dayFor just $25, you’ll walk away with practical food ideas, case studies, and performance-focused strategies you can start using right away.👉 Check it out here✨ This episode is brought to you by Beyond the Miles from Alex Larson Nutrition