The Hidden Influence of Community and Environment with Christina Economos

How Many Steps Do You Really Need for Health and Weight Loss with Amanda Paluch

For decades, one number has ruled the world of fitness: 10,000 steps. It's on your watch, your phone, maybe even tattooed into your daily to-do list. But what if that number was never based on science at all? Join Holly and Jim as they sit down with Dr. Amanda Paluch, Associate Professor of Kinesiology at the University of Massachusetts Amherst and leader of the Steps for Health Collaborative, an international research consortium pooling data from over 125,000 adults to answer one deceptively simple question: how many steps do you actually need? Amanda pulls back the curtain on where the 10,000-step goal really came from, what the data shows instead, and why the "right" number might depend on how old you are. Whether you're chasing a step count, recovering from mobility limitations, or navigating GLP-1 medications, this conversation will change the way you think about your daily walk. Discussed in the episode: * The surprising 1960s marketing origin of the 10,000-step goal (hint: it has nothing to do with health research) * Why the "right" step goal may look different depending on your age * The step range where most of the cardiovascular benefit shows up (it's lower than you'd think) * Whether walking pace matters as much as total volume * How do steps fit into the GLP-1 conversation? * What the research says about step counting becoming an unhealthy obsession * Practical advice for people with mobility limitations who feel like step goals are out of reach * Rapid-fire answers on walking vs. running, treadmill vs. outdoor steps, and more * A simple mindset shift for anyone having a "low step day"

How Hype and Common Sense Shape Our Eating Choices with Tamar Haspel

For 40 years, every time nutrition has found a new villain, the food industry has handed us a new label to go with it: non-fat, no GMOs, gluten-free, no seed oils, and now, non-ultra-processed. We have more experts, more studies, and more food rules than ever before, so why does standing in the grocery aisle still feel like such a guessing game? Join Holly and Jim as they sit down with Tamar Haspel, the James Beard Award-winning Washington Post columnist behind Unearthed and author of To Boldly Grow, to pull apart the ultra-processed food debate and ask whether today's labels are actually helping us eat better or just making us easier to market to. Tamar doesn't just write about food from behind a desk: she gardens, fishes, raises chickens, and runs an oyster farm on Cape Cod, and she brings three decades of reporting, real skepticism, and zero patience for diet cranks to the conversation. You'll hear why the food world keeps repeating the same mistake, what a cage full of B.F. Skinner's pigeons can teach us about our relationship with food, and what's really driving overeating once you strip away the marketing. Discussed on the episode: * The decades-old pattern that explains why every new food "villain" feels eerily familiar * The bizarre pigeon experiment that reveals why we're so convinced certain foods are "good" or "bad" for us * Why a bowl of crushed cereal proved more about overeating than years of processed-food headlines * The blunt case for why "everything in moderation" might be the most useless diet advice out there * The one-sentence grocery store rule that could replace almost every food label you've ever side-eyed * How GLP-1 medications could end up reshaping the entire food industry, not just individual waistlines * The "healthy" nutrient claim, Tamar says, is wildly overrated and the snack everyone blames for something it's not even guilty of

The Science and Realities of Long-Term GLP-1 Use

Losing weight on a GLP-1 medication can feel like magic until the scale stops moving. For almost everyone on these drugs, there comes a moment when the rapid progress slows, then stalls completely. Is the medication failing? Has your metabolism adapted? Did you do something wrong? For most people, that moment feels like a problem. It isn't. Join Holly and Jim as they unpack one of the most misunderstood parts of the GLP-1 journey: the shift from losing weight to keeping it off. You'll discover why a stalled scale is actually a sign the medication is doing exactly what it's supposed to do, and why "maintenance" is a completely different physiological state than "weight loss." One that comes with its own rules. Along the way, you'll pick up science-backed (and some still-unanswered) guidance on nutrition, muscle, bone health, and motivation for the long haul, plus a clear answer to a question Holly says she gets all the time: Are they against staying on these medications long-term? Discussed on the episode: * Why hitting a plateau on a GLP-1 is good news, not a sign the drug has stopped working. * The blood pressure pill comparison that reframes what people call "drug resistance" * Why nutrition may matter even more, not less, once weight loss stops * Whether you actually need to exercise to keep weight off on a GLP-1 (the honest answer might surprise you) * The bone health risk in younger women that's getting far less attention than muscle loss * Why are dose-tapering and switching strategies being called the "Wild West" of GLP-1 care * A New York Times claim about these medications "rewiring the brain" and what that could mean long after you stop. * How to find motivation once the scale refuses to budge Have a question or a success story? Send it in. Holly and Jim read every one, and they're especially looking for listener stories about navigating weight loss maintenance.

The Hidden Influence of Community and Environment with Christina Economos

What if the biggest obstacle to your health isn't your willpower, it's your zip code? Most of us have been raised to believe that weight and health come down to personal choices: what you eat, how much you move, how disciplined you are. But what if the deck has been stacked against millions of Americans before they ever make a single decision? This week, Holly and Jim sit down with Dr. Christina Economos, Dean of the Friedman School of Nutrition Sciences and Policy at Tufts University, to explore one of the most important  and most overlooked dimensions of the obesity epidemic: the environments we live in. With decades of groundbreaking research behind her, including the landmark Shape Up Somerville study, Dr. Economos makes a compelling case that lasting health change can't happen one person at a time. And with GLP-1 medications reshaping what's possible for individual weight loss, the conversation has never been more urgent. Does community still matter when we have powerful new treatments? Dr. Economos has a clear answer, and it just might change how you see your own role in the bigger picture. Discussed on the episode: * The landmark study that proved community-wide obesity prevention actually works in the real world, and the surprising ripple effect it had beyond the children involved. * Why your zip code may predict your health outcomes nearly as powerfully as your genetics * The hidden forces in your neighborhood that are quietly shaping what you eat and how much you move, often without you realizing it * What a food environment assessment in the Mississippi Delta revealed perfectly captures the challenge millions of Americans face daily * Why fixing schools alone won't fix childhood obesity, and what actually needs to happen instead * The honest answer to how much of the obesity epidemic is biology versus environment (hint: it's not a clean split) * The key ingredients, Dr. Economos says, every successful community health intervention must have, and the #1 mistake researchers keep making * How GLP-1 medications and community health are more connected than you might think * What "spark plugs" are, why every successful health movement has had them, and whether you could be one * Real U.S. communities that are getting this right and what they're actually doing differently * Practical steps anyone can take right now, even if your environment is working against you

The Rise and Fall of Popular Diets Over 100 Years

If you've spent years hopping from one diet to the next: low fat, then low carb, then keto, then intermittent fasting, you're not alone, and you're not failing. The truth is, the diet world has been cycling through the same promises, the same villains, and the same disappointments for nearly a hundred years. And most of us never stop to ask why. Join Holly and Jim as they do something they've never done before on the show: step back and take a decade-by-decade look at almost 100 years of dieting history. From the 1930s to the GLP-1 era of today, they trace how we went from counting calories to carnivore diets  and what it all actually taught us (or didn't). This one is equal parts fascinating, a little humbling, and surprisingly fun. Whether you're a diet history nerd or just someone who's tired of starting over, this episode will change the way you think about every diet you've ever tried. Discussed on the episode: * The three-category system Holly and Jim use to classify every diet, and why one category might describe your current eating plan * The diet from the 1930s that your favorite wellness influencer is basically still selling today * Why the decade that got everyone obsessed with fat-free foods may have actually made obesity worse * The weight loss medication that came before GLP-1s, and the dramatic reason it was pulled from the market * Which diets from the last 100 years actually have the science to back them up * The rapid-fire verdict: best diet, biggest mistake, and most underrated program of the century * What GLP-1 medications are changing about the way we think about diets, and why Holly has one big worry about where this is all heading * Jim's closing thought that reframes everything you think you know about why diets succeed or fail