Nutrition trends that may cause runner's 💩 with Grace Kelley MS RDN
Release Date: 06/19/2025
Lane 9 Podcast
" Consider why you want to do this. What are the motivating factors for completing the marathon right this second? What are your long-term health and movement goals, and does this get you closer to them or further away?" Lane 9 co-founder, and dietitian, Heather Caplan RDN takes on two more listener questions in this episode. 1) How do clinicians navigate what may be REDs, with an athlete who has an IUD and doesn't get periods? 2) If I'm undertrained and experiencing symptoms of REDs (haven't had a period in about a year), but I want to run marathon, what should I do? As always,...
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"You might think, 'On the other side of this, if I'm not even guaranteed better performance, Why would I do it?' That comes down to our values," shares Lane 9 co-founder, and dietitian, Heather Caplan. This Q&A episode tackles two questions: Is it possible to be 'healthy' even with extremely irregular periods or absent periods, if everything else is going well? Will I recover from REDs and get faster? What if I get slower, or get injured? Have your own question to submit to Lane 9 for a future episode or resource? We'd love to hear them! Go to Lane9project.org and contact us. Or...
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"I'd rather suck at running and have my life back," Erin McDonald, who just won the 2025 Detroit Free Press International Half Marathon in 1:16. She objectively does not suck at running, but she does have her life back! Erin McDonald recently opened up about her struggles with restrictive and rigid eating in college as a runner at Michigan State University. She was primed and favored to make nationals her senior year—staying "disiplined" with her food, rest, and training routine—but the race went totally awry. With a job lined up after graduation, she was ready for a long break from...
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"Athletes aren't immune to that messaging of like, 'carbs are bad, you shouldn't have carbs, and they're the worst thing ever.' But we know that carbs are our body's preferred source of fuel, especially when you're doing these intense bouts of exercise like most athletes are doing," shares sports dietitian Lauren (or Lo) Segal. Segal is a now in private practice, after almost 10 years of working as a collegiate sports dietitian, most recently at the University of Utah. She's part of our Lane 9 Clinicians and Coaches Membership, and listed in the Lane 9 Women's Sport and Health...
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" You can't ultimately control what happens in a race. And so you convince yourself you can, right? Or you tell yourself, well, if I control these other things, I might be able to control what happens in the race." Stephanie Reents ran for four years on the Amherst College women's Cross Country team in the early 90s, and is the author of "We Loved to Run" her debut novel. Reents wanted there to be a novel about women's running, stories about the identities athletes hold and how those identities shape and change team dynamics, friendships, and relationships...to themselves, to their...
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"I've never had a very lean body type. I kept showing up to these triathlons with lean-looking people and second-guessing if I deserved to be there...then smoking them on the bike and in the run, and gaining that confidence," shares Jess Cerra, a former professional cyclist, a sports nutrition entrepreneur, and now VP of Product and Community Development at Alete Active Nutrition. Cerra joins us to talk about her unusual path into high level endurance sports, and then professional cycling, while studying aspects of sports nutrition, and eventually founding a sports nutrition company. She...
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"I've found that athletes vastly underestimate their [energy] needs," shares Heather Caplan RDN, co-founder of Lane 9, in this Q&A-style episode. Listen for this one if you're wondering... How often is it okay to have sweet things/desserts? Is it possible to have REDs without weight loss/changes? Why am I not getting my period back, even though I'm eating a lot more? This one tackles flexibility with food, decades of carb-fearing and how it probably still impacts what most people eat on a daily basis...even in sports, weight stigma in athletics and the variety of REDs symptoms, and...
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"Once I started to really add fueling into the long runs...I realized how much that was helping the next run," shares Dr. Leah Avery DPT. Leah Avery DPT was a D1 collegiate swimmer, who qualified for NCAA championships and the Olympic Trials (2008). On paper, her athletic story reads as inspiring and exciting for a young athlete. In reality, it was a pressure-filled struggle to keep up with expectations, training, and results. She was ready to be done. When she graduated and started her DPT program, she couldn't have been happier to stop swimming, and start running. "It wasn't all...
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"I weighed more as a professional runner than I did in college, and I ran faster as a professional runner," shares sports dietitian Maddie Alm MS RDN. You might know Maddie Alm from her Instagram account and podcat, Fueling Forward. She started her journey to becoming a registered dietitian after meeting with a sports RDN in college, as a collegiate athlete. In college, she was feeling exhausted between workouts and training sessions, but as she shares on this episode, "didn't even realize that fueling was important." That all changed with a pretty simple suggestion from the dietitian:...
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" When I eventually figured out my food intolerances and a better relationship with fueling, I brought [my marathon PR] down to 2:44 within a little under a year." Jenny Grimshaw, VP of marketing at EQUIP*, and now a 2:36 marathoner, joins us on the Lane 9 podcast. Jenny is also a mom of 2, and navigating prophylactic surgeries to reduce her risk of breast and ovarian cancers (with the BRCA-1 gene). Her postpartum running experiences have been full of PRs, as she has figured out her own fueling needs, how to balance her identity as a runner with all the other things she does, and has worked...
info_outline"I think runners specifically are convinced that sh*tting your pants is normal...I see stuff all the time online of people saying, 'Oh, running causes me to have GI issues.' No, running plus your nutrition is the cause."
Grace Kelley really wants you to be able to run without sh*tting your pants. And she's got the myth-busting reels on Instagram to help! Kelley is a sports dietitian, part of the Lane 9 Directory, and a runner training for her first marathon, Fall 2025. Throughout the process, she's testing out a variety of gels so you don't have to, and keeping a spreadsheet with the facts. She's also making reel after reel of objectively bad nutrition advice from the internet, to save your gut and your run from an ill-informed fueling strategy.
We had a great time chatting with Grace about how she started running on Dry Land (IYKYK) after swimming through high school, how an appointment with a dietitian changed her career path and her own relationship with food, and more about her private practice.
Then we dig into some nutrition trends that may be affecting YOUR gut, and what might help.
Follow her @GraceKelleynutrition on Instagram. And send her bad nutrition things! For the content!
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