Your Diet Sucks

Zoë Rom

Diet culture, you've met your scientific match. Hosted by an elite ultrarunner/journalist and a registered dietitian, Your Diet Sucks dismantles the myths, trends, and pseudoscience that screw up how we think about food, health, and fitness. Subscribe to bonus episodes here: https://creators.spotify.com/pod/profile/microcosm-coaching0/subscribe

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  1. 1d ago • Subscribers Only

    October Bonus: Tart Cherry Juice, Training through Menopause, and the Ad That Chose Violence

    We’re back from Chicago, briefly unemployed as travelers, and sitting on roughly 200 listener questions. This month we start with an S!Caps ad in UltraRunning magazine claiming that carbohydrate fueling eventually damages athletes through “overexposure to insulin.” A listener with prediabetes who loves her carbs wants to know if she should worry. Kylee explains what prediabetes actually means, why exercise changes how your muscles take up glucose, and how to use carbs strategically instead of cutting them. Zoë asks why an electrolyte company woke up and picked a fight with bread. Then we go rapid-fire. We share our go-to pre-run fuel (air-fried waffles, Nutella toast, and an unapologetic Pop-Tart defense) and ask everyone to please stop eating apples before runs. We look at whether menopausal athletes should deload more often, where that idea comes from in lab research on estrogen, and why sleep and protein matter more than any one-size-fits-all rule. We dig into the tart cherry juice research, including the calorie-matched placebo studies a sharp listener asked about, and where the sleep claims fall short. Kylee walks through when to test iron during a training block, whether an infusion four weeks out can still help, and the annual blood panel she recommends for athletes. And for the gym-after-a-desk-job crowd: you’re an athlete, eat a balanced snack, and set your own terms of success instead of buying everything the optimization industry is selling. We close with a big one: what happens to your body and brain when you regain weight after an illness. We revisit the Minnesota Starvation Experiment and its refeeding phase, talk about why fat often comes back before muscle, how to spot body checking, and why Zoë credits finding her own style (shout out to Allison Bornstein) with doing more for her body image than she expected. Also, two Australian Shepherds get into a fight around minute 20. We kept it in. Kylee’s quarterly masterclasses and nutrition Q&As are coming to our new upper Patreon tier. Keep sending questions. We’ll see you in November.

  2. Oct 14

    Do 95% of Diets Really Fail? The Zombie Statistic and What Long-Term Weight Loss Data Actually Says

    You’ve heard it in diet ads, anti-diet infographics, gym locker rooms, and possibly from us. “95% of diets fail” is one of the most repeated statistics in nutrition, and it gets used by both sides. Diet culture uses it to say everyone else’s diet fails, so buy theirs. Anti-diet spaces use it to say nothing works. So we went looking for where it came from. The trail leads to a 1959 case series of 100 patients at a New York hospital. Each one got a diet sheet and one counseling visit, then never heard from anyone again. A quarter of them never came back. The number 95 doesn’t appear anywhere in the paper. When a reporter tracked down the lead author in 1999, he told her his data couldn’t support what people were doing with it. The statistic kept spreading anyway. In this episode, Zoë and Kylee look at what the long-term weight loss research actually shows. That includes the Look AHEAD trial, a meta-analysis of 80 trials and more than 26,000 people, the National Weight Control Registry, and Kevin Hall’s famous Biggest Loser study. They also get into why hunger hormones stay shifted for a year after dieting, why diet rigidity predicts failure better than any specific diet does, how dropout bias makes the published numbers look better than reality, and where GLP-1 medications fit in. Kylee talks about what metabolic adaptation looks like in her clinical practice. Both hosts explain why “define diet, define failure, define percent” is the only correct response at a bar. The bottom line: diets don’t fail 95% of the time. With a serious definition of success, the real failure rate is somewhere between two-thirds and 90%, and that’s with intensive professional support. The real number is still not encouraging. But a statistic you can’t source isn’t evidence. It’s a bumper sticker. Want more? Join the community on Patreon for monthly bonus episodes, weekly nutrition question threads with Kylee, and members-only posts.

    Do 95% of Diets Really Fail? The Zombie Statistic and What Long-Term Weight Loss Data Actually Says
  3. Sep 16

    Diet Culture & Pyramid Schemes: MLMs, Herbalife, and the Vitamin That Started It All

    Multi-level marketing was invented to sell vitamins. Not adjacent to vitamins, not eventually pivoted to vitamins: the first MLM in America was a 1945 alfalfa-pill company that got raided by the FDA within two years, and everything since (Amway, Herbalife, the friend from high school who wants you to try a shake) is running the same play. In this episode, Zoë and Kylee trace how diet culture and direct selling grew up as one machine: the Nutrilite origin story, why supplements are the perfect MLM product, Herbalife's unmarked nutrition clubs and the mystery of why the shake tastes better in the store than at home, the billionaire slap fight that ended in a $200 million FTC settlement, and what the independent numbers say about who actually makes money (almost no one). Plus: Betsy DeVos's grandfather, the Tupperware party as feminist history, and why "boss babe" is doing unpaid PR for a system built to move money out of women's pockets. If you got pulled in, or watched someone you love get pulled in, the math was rigged before anyone signed up. That's the whole point. Full transcript, references, and research at yourdietsuckspodcast.com. Support Your Diet Sucks on Patreon for monthly bonus episodes, weekly nutrition question threads with Kylee, members-only recipes and posts, and the archive: patreon.com/YourDietSucks This episode is supported by: rabbit: our title sponsor and the run apparel we actually wear. Use code SUMMERSNACKS10 for 10% off at runinrabbit.comTailwind Nutrition: endurance fuel and hydration that won't wreck your gut. Use code YOURDIET20 for 20% off at tailwindnutrition.comMicrocosm Coaching: evidence-based run coaching from humans, not algorithms. Book a free consultation at microcosm-coaching.com

    Diet Culture & Pyramid Schemes: MLMs, Herbalife, and the Vitamin That Started It All
  4. Sep 14 • Subscribers Only

    September Bonus: Training While Sick, Perimenopause or RED-S, Women-Specific Shoes, and What Counts as "Enough"

    It's a big week. Zoë is running Run Rabbit Run, Kylee is headed to Aussie Nationals (the dog kind, 500 Australian Shepherds in Greeley), and two emotional support Aussies are on mic to secure our status as the only nutrition science podcast with a 50/50 human-to-dog cohost ratio. Unverified. Before the questions, the full story of the YDS x rabbit collection: an Italian postcard mood board, a first draft that read as "too healthy," and the executive decision that the crop top needed more pizza. The collection is going fast and won't be restocked, because we don't make things to throw away. Then the questions, which were unusually good this month. Is there any data on training while sick or with a fever? (A fever is a hard no. We cover the below-the-neck rule, why exercise is a stress your body can't afford while it's catabolic, and why fueling comes before the workout when you're sick.) How does an ultrarunner distinguish perimenopause from RED-S from ordinary training stress when the symptoms overlap, and why doesn't a single hormone panel settle it? A 48-year-old with an eating disorder history was told by a nurse practitioner to cut carbohydrates for nighttime joint pain. Is there evidence carbs cause achy joints? (No. There is a bear metaphor.) When life makes progress unrealistic and the goal is maintenance, what does enough movement look like, and does walking count? Is there merit to women-specific running shoe design like Hettas, or is it marketing? And how does Zoë balance work, 100-mile training, and comedy? Saying no, the big-rocks jar, and headlining her first stand-up show at Trailfest. Links: https://www.runinrabbit.com/collections/your-diet-sucks Zoë's comedy: https://www.youtube.com/@ZoeRomComedyandRambling RED-S episode (Oct 2025): https://podcasts.apple.com/us/podcast/relative-energy-deficiency-in-sport-explained-causes/id1758825060?i=1000731964516 The Female Athlete Nutrition Industrial Complex (June 2025): https://podcasts.apple.com/us/podcast/the-female-athlete-nutrition-industrial-complex/id1758825060?i=1000712392816

  5. Sep 2

    Is It Actually Your Cortisol? Cortisol Belly, Cortisol Face, and the Billion-Dollar Business of Blaming a Hormone

    Support us on Patreon! Somewhere in the last few years, cortisol became the answer to everything. Tired? Cortisol. Puffy? Cortisol. Gained weight, lost sleep, can't stop scrolling? Cortisol. A hormone you would die without got recast as the thing wrecking your face, and a $4.8 billion supplement economy showed up to fix it. This episode asks how that happened, and whether any of it is new. It isn't. Zoë traces the lineage: Hans Selye, the self-described father of stress, who built the modern idea of stress from rat experiments in the 1930s and then quietly took tobacco industry money for decades while his research was used in court to argue that stress, not cigarettes, was making people sick. Then the 1998 arrival of "adrenal fatigue," a diagnosis coined by a naturopath in a self-published book, dismissed by the Endocrine Society, and treated with ground-up cow adrenal glands that are still on Amazon today. Cortisol panic is adrenal fatigue with a real hormone bolted on. Kylee handles the real hormone. What the HPA axis actually does, why the morning spike is a sign your system works, why a cortisone shot and "the stress hormone" are the same molecule, and what a proper cortisol test looks like versus a $500 saliva kit with poor day-to-day reliability. We take on cortisol face (the clinical version is Cushing's, and you'd know), cortisol belly (the mechanism is real at pathological levels and unsupported for a stressed person with a normal curve), and the cortisol cocktail (orange juice and salt, which is an electrolyte drink in a wine glass). For athletes, the internet has it backwards. A hard workout can briefly push cortisol into Cushing's range, then it's gone in hours. Real overtraining blunts the stress response rather than flooding it, and under-fueling raises baseline cortisol because your body reads a chronic deficit as an ongoing threat. Skipping intensity to protect your hormones protects nothing. If cortisol is where a structural problem gets relocated onto an individual body, the gummy can't fix the job, the rent, or the toddler. Sleep, carbohydrates, and recovery still can. rabbit: our title sponsor and the run apparel we actually wear. Use code SUMMERSNACKS10 for 10% off at runinrabbit.comgoodr: $25 polarized sunglasses that don't bounce, don't slip, and don't cost a race entry. Use code YDS at goodr.com/YDS for $10 off. Tailwind Nutrition: endurance fuel and hydration that won't wreck your gut. Use code YOURDIET20 for 20% off at tailwindnutrition.comMicrocosm Coaching: evidence-based run coaching from humans, not algorithms. Book a consultation at microcosm-coaching.com

    Is It Actually Your Cortisol? Cortisol Belly, Cortisol Face, and the Billion-Dollar Business of Blaming a Hormone
  6. Aug 19

    Are You Addicted to Exercise?

    Support the show at Patreon.com/yourdietsucks "No days off" is a slogan, a t-shirt, and a diagnostic criterion, depending on who's reading it. This week: exercise addiction. Whether it's real, whether "addiction" is even the right word, and why the whole concept was popularized by a psychiatrist who also thought clinical depression was a choice you could simply make differently. We trace it from a 1970 sleep study that fell apart because the researcher couldn't find enough people willing to stop exercising for thirty days, to the 1976 book that told a generation being hooked on running was a personality upgrade, to the 1983 paper that could only make men's version legible by borrowing the vocabulary of anorexia. Plus: what the prevalence research actually shows, why the brain-imaging literature fits in a three-ring binder, and four ways to tell dedication from compulsion that have nothing to do with your weekly mileage. Sponsors This episode is brought to you by rabbit, whose new women's collection is built for people who actually run in it. ⁠runinrabbit.com/collections/womens-new⁠, code SUMMERSNACKS10 for 10% off. Tailwind Nutrition got us through this one. ⁠tailwindnutrition.com⁠, code YOURDIET20 for 20% off. Microcosm Coaching works with athletes who want to train and fuel without the shame spiral. ⁠microcosm-coaching.com⁠ Links Every episode and full transcripts: ⁠yourdietsuckspodcast.com/your-diet-sucks-podcast⁠ Bonus episodes, Kylee's weekly nutrition question thread, and a group chat that will never try to sell you a binder: ⁠patreon.com/YourDietSucks⁠

    Are You Addicted to Exercise?
  7. Aug 11 • Subscribers Only

    August Bonus: Soy Boys, Plant-Based Panic, Stacy Sims, and the Frail Old Lady Industrial Complex

    In this month's bonus episode, we dive into the single 2008 case report that launched a thousand bad takes about tofu, and the truly deranged amount of soy milk it involved. What we get into is what phytoestrogens actually do in your body, and when you might actually want to think about your soy consumption. We also unpack why plant-based eating doesn't feel as trendy as it used to, the question we get at parties that Zoë hates most, and why we don't like to tell people what to eat. We chat through eating for pleasure vs. just fueling, and what Kylee listens for when a client says they don't like food. And why every woman on Instagram is scared of fructose and doing hyper-specific protocols to avoid becoming "frail". Related and references: YDS episodes mentioned: The Vegetarian Diet: What Athletes Need to Know — protein needs, iron, B12, and the link between plant-based eating and orthorexia What's the Best Diet for the Climate? — beef's carbon footprint, almond milk vs. oat milk, and why Fox News thinks burgers are freedom The Female Athlete Nutrition Complex — why nutrition advice fails women athletes, and what the research actually supports Your Nutrition Documentary Sucks — fact-checking The Game Changers in real time, and whether going plant-based is actually performance enhancing Cowley, E. S., Olenick, A. A., McNulty, K. L., & Ross, E. Z. (2021). "Invisible sportswomen": The sex data gap in sport and exercise science research. Women in Sport and Physical Activity Journal, 29(2), 146–151. Martinez, J., & Lewi, J. E. (2008). An unusual case of gynecomastia associated with soy product consumption. Endocrine Practice, 14(4), 415–418. American Cancer Society. Soy and cancer risk: Our expert's advice. American Institute for Cancer Research. Soy and breast cancer: Myths and misconceptions. Wideman, L., et al. (2013). Accuracy of calendar-based methods for assigning menstrual cycle phase in women. Sports Health, 5(2), 143–149.

4.7
out of 5
258 Ratings

About

Diet culture, you've met your scientific match. Hosted by an elite ultrarunner/journalist and a registered dietitian, Your Diet Sucks dismantles the myths, trends, and pseudoscience that screw up how we think about food, health, and fitness. Subscribe to bonus episodes here: https://creators.spotify.com/pod/profile/microcosm-coaching0/subscribe

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