The Habit Healers

Laurie Marbas, MD, MBA

Welcome to The Habit Healers Podcast—where transformation starts with a single habit. Hosted by Dr. Laurie Marbas, this podcast is for anyone ready to break free from chronic health struggles, rewire their habits, and create lasting healing. Through powerful stories, science-backed strategies, and real-world tools, we dive deep into the micro shifts that lead to massive health transformations. You’ll learn how to heal beyond prescriptions—how to nourish your body, reprogram your mind, and build the habits that make vibrant health effortless. Whether you’re looking to reverse disease, boost energy, or finally make health a way of life, this podcast will show you how. Because true healing isn’t about willpower—it’s about design. And you’re always just one healing habit away. drlauriemarbas.substack.com

  1. What Happens When You Stretch for 3 Minutes Every Morning for 2 Weeks

    2H AGO

    What Happens When You Stretch for 3 Minutes Every Morning for 2 Weeks

    What happens if you stretch for just three minutes every morning for two weeks? Not an hour.Not a hot yoga class.Not a heroic “new year, new me” overhaul. Three minutes. In this week’s Habit Healers Live Lab, I share what actually changed in my own hip after seven days of micro-dosing mobility — and why biology responds to consistency far more than intensity. We treat stiffness like a project that needs a dramatic fix. But your nervous system doesn’t care about your weekend warrior session. It adapts to what you do daily. In this episode, I explain why you can’t “cram” mobility any more than you can cram brushing your teeth — and how small, repeatable inputs begin to recalibrate the body’s built-in safety brakes. I walk you through: * Why more stretching doesn’t automatically mean more gains * What PNF (contract–relax) actually does in the nervous system * The difference between forcing length and updating tolerance * Why dynamic mobility is more like practice than stretching * And how strengthening your glute med might be the missing piece I also give you the full Week 2 protocol — under five minutes total — designed to shift your system from guarding to allowing. This isn’t about forcing tissue to surrender.It’s about teaching your brain that new range is safe. If you’ve ever felt “rusty,” blamed your birthday, or assumed fixing a 20-year stiffness problem required a 60-minute workout… this episode will challenge that story. We’re not chasing intensity. We’re rewiring defaults. Dr. Marbas Substack: https://drlauriemarbas.substack.com/ A Big Thank You To Our Sponsors: If you want the best supplement to help you on your plant-based journey, you have to try Complement: https://lovecomplement.com/?aff=62 Get full access to The Habit Healers at drlauriemarbas.substack.com/subscribe

    7 min
  2. Understanding Dementia: Early Signs, Prevention, and Treatment

    2D AGO

    Understanding Dementia: Early Signs, Prevention, and Treatment

    In this episode of "Learn My Lesson," I had the pleasure of speaking with Dr. Jake Goodman, a psychiatrist and the writer behind the "Mental Health Movement" Substack. Dr. Goodman shared his inspiring journey into medicine, detailing his early aspirations, the challenges he faced getting into medical school, and his eventual specialization in psychiatry. He also discussed his personal experience with depression during his residency, which has significantly enhanced his empathy and understanding as a psychiatrist.We delved into the topic of dementia, a growing concern among our aging population. Dr. Goodman explained the basics of dementia, including its different types such as Alzheimer's, Lewy body dementia, and frontal temporal dementia. He emphasized the importance of recognizing mild cognitive impairment (MCI) as a precursor to dementia and discussed various ways to prevent and manage these conditions.Key preventive measures highlighted include regular exercise, quality sleep, socialization, and proper nutrition. Dr. Goodman also stressed the importance of getting hearing and vision checked, managing blood pressure and blood sugar levels, and addressing any micronutrient deficiencies. He mentioned the potential benefits of certain medications and supplements, while also cautioning against unnecessary polypharmacy.We also touched on the ethical considerations of genetic testing for dementia risk, with both of us agreeing that it's a nuanced decision that requires careful thought.Dr. Goodman practices at the Goodman Memory Clinic, offering virtual consultations in California, Florida, and New York. He is active on social media and Substack, where he shares valuable insights on brain health and mental well-being.This episode is packed with practical advice and thoughtful discussions on dementia prevention and mental health, making it a must-listen for anyone interested in these topics. Thank you, Dr. Goodman, for sharing your expertise and experiences with us!Links to connect with Dr. Goodman:Virtual Practice (Goodman Memory Clinic): https://forms.gle/BDWhyrsw65V5YYia8Newsletter: https://jakegoodmanmd.substack.com/Instagram: https://www.instagram.com/jakegoodmanmdDr. Marbas Substack: https://drlauriemarbas.substack.com/ A Big Thank You To Our Sponsors: If you want the best supplement to help you on your plant-based journey, you have to try Complement: https://lovecomplement.com/?aff=62 Get full access to The Habit Healers at drlauriemarbas.substack.com/subscribe

    51 min
  3. What Does “Whole Person Medicine” Actually Look Like?

    4D AGO

    What Does “Whole Person Medicine” Actually Look Like?

    I get referred patients regularly because I practice what people call “holistic medicine.” And the story is almost always the same: they’ve been through conventional medicine, they keep getting more prescriptions, their numbers may look fine on paper, but they don’t feel any better. Sometimes they feel worse. There’s a lack of vitality that nobody seems to be addressing, and nobody is asking why. That conversation stuck with me, because it’s exactly the kind of gap Chris Miller MD and I discussed in our latest live. Chris is a physician I trust, someone I go to when I have clinical questions that sit outside my own lane. She’s board-certified in lifestyle medicine like I am, and she’s gone further into integrative and functional medicine training. She practices in 23 states via telemedicine, and she brings a perspective shaped by her own health challenges, including managing lupus. What follows is a summary of our conversation, along with some practical guidance if you’re trying to find a physician who actually sees you, not just your lab results. The Habit Healers is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. The Problem With “Holistic” I deliberately chose the phrase “whole person medicine” for this conversation instead of “holistic.” Not because holistic is a bad word, but because it carries so much baggage that it can mean almost anything. For some people, holistic means walking away from conventional medicine entirely. That’s not what Chris and I practice, and it’s not what we’d recommend for anyone. Whole person medicine, the way we define it, means something specific. It means your physician doesn’t just treat the complaint that brought you through the door. If you come in with high blood pressure, a whole person approach doesn’t stop at a prescription. It looks at your blood sugar. It checks inflammatory markers. It asks about your sleep, your stress, your diet, how connected you feel to the people around you. It recognizes that inflammation in one system doesn’t stay in one system. Your cardiovascular health, your brain, your gut, your immune function are all talking to each other. And the treatment plan reflects that. Diet and lifestyle come first. Integrative tools like yoga, acupuncture, or mind-body practices can support recovery. Supplements fill actual documented gaps (not guesswork). And medications are used when they’re indicated, because keeping someone safe is always the priority. As Chris put it during our conversation, her first job with every patient is to keep them safe. If something is dangerously abnormal, you address it with whatever tools you have, including pharmaceuticals. Then you build the lifestyle foundation underneath. Evidence-Based Shared Decision-Making One of the things I talked about in the live was an article by Greg Katz, MD, a cardiologist on Substack, about a patient who came in with exertional chest pain during exercise. His primary care doctor hadn’t been too alarmed. That would have set off alarm bells for me. The patient eventually ended up seeing Dr. Katz, had imaging that showed significant blockage in the LAD (sometimes called the “widowmaker”), and then faced a decision: stent, or medical management? What made Dr. Katz’s approach stand out was the shared decision-making process. He looked at the data, including the ISCHEMIA trial, which shows that for stable patients, stenting and medical management produce comparable long-term outcomes. He discussed it with colleagues. He presented the evidence to the patient. And together, they decided. That model is what whole person medicine looks like in action. It doesn’t mean your doctor avoids modern interventions. It means your doctor uses evidence to guide the conversation and treats you as a partner in the decision, not a passive recipient. Where Lifestyle Medicine Fits (and Where It Stops) Chris and I are both board-certified in lifestyle medicine through the American College of Lifestyle Medicine (lifestylemedicine.org). That certification means a physician has foundational training in nutrition, physical activity, sleep, stress management, and behavior change as therapeutic tools. For a lot of people, that foundation is enough. Shift to a more plant-forward diet, improve sleep quality, add consistent movement, manage stress, and many chronic conditions start to improve. But Chris’s own story is a good example of when it’s not enough. She changed her diet. She optimized sleep and stress management. Her lupus didn’t budge. So she went deeper. She trained in integrative medicine with Dr. Andrew Weil, studying mind-body techniques, vagal nerve activation, and the role of the parasympathetic nervous system in healing. Then she trained in functional medicine, which uses more advanced testing (microbiome analysis, heavy metals, mold exposure) when standard approaches haven’t uncovered the root problem. What she found was that she had genetic variants affecting methylation and B vitamin activation. No amount of dietary change alone was going to correct those abnormalities. She needed targeted supplementation and a more precise approach. The lesson isn’t that diet and lifestyle don’t matter. They remain the foundation for the vast majority of people. The lesson is that autoimmune disease, and really any chronic condition, is not one-size-fits-all. If you’ve made meaningful lifestyle changes and you’re still not getting better, that doesn’t mean you’re doing something wrong. It may mean there’s a layer underneath that hasn’t been addressed yet. Inflammation: What to Know, What to Ask For Chris and I spent a good chunk of our conversation on inflammation, because it sits at the crossroads of so many conditions. Joint stiffness, brain fog, depression, difficulty sleeping, waking up sore. These can all be signs of chronic low-grade inflammation. And at its worst, acute inflammation is what triggers heart attacks and strokes. There are a few basic markers your doctor can check. A CBC (complete blood count) is drawn at most annual visits, and shifts in your white blood cell count from your personal baseline can signal something brewing, even if the number still falls in the “normal” range. If you usually run around 3.5 and now you’re at 6 or 7, that’s worth investigating. Beyond the CBC, high-sensitivity C-reactive protein (hs-CRP) is one of the most useful inflammatory markers. It’s produced by the liver in response to inflammatory signals anywhere in the body, and research has linked elevated hs-CRP to increased risk for cardiovascular events, neurodegenerative disease, and autoimmune flares. A target of less than 1.0 mg/L is generally considered protective. One caveat Chris raised that I think is important: hs-CRP can spike temporarily after an intense workout or during an acute viral infection. If you just ran 20 miles or you’re fighting a cold, recheck it a week later before drawing conclusions. ESR (erythrocyte sedimentation rate) is another inflammatory marker, and it can sometimes catch what CRP misses, particularly in certain autoimmune conditions. The two tests use different mechanisms and respond to different inflammatory signals, so it’s not uncommon to see one elevated while the other is normal. The point is this: if you’re feeling off and your doctor isn’t checking inflammatory markers, it’s worth asking. The Bigger Metabolic Picture I’ve been spending more time writing and thinking about metabolic health, and one statistic has stuck with me. Research looking at cardiometabolic health criteria in American adults found that only a small fraction, roughly one in fourteen, met all five markers of optimal metabolic health. That data only goes through 2018, so the real number now is likely worse. Metabolic health is, at its simplest, how well your body processes and uses energy. Insulin resistance is part of it. Blood sugar regulation is part of it. And poor metabolic health doesn’t just show up as diabetes. It accelerates heart disease, contributes to cognitive decline, worsens GI issues, and fuels chronic inflammation. This is where every conversation about whole person medicine eventually leads. The daily habits, what you eat, how you move, whether you sleep well, how you manage stress, whether you have meaningful social connection, build or erode your metabolic health over time. No single doctor’s visit can undo years of accumulated damage. But the right physician can help you understand where you stand and build a plan that actually addresses the full picture. A Word on GLP-1 Medications Chris and I both shared that our thinking on GLP-1 medications has evolved. Neither of us is a pill-first physician. But the data on these drugs keeps expanding in directions that are hard to ignore. The most obvious use is for food noise, that constant mental chatter about the next meal that some people experience no matter how carefully they eat. For patients who have solid lifestyle habits and are still battling that relentless drive, GLP-1 medications can lower the volume enough to let everything else work. Beyond weight management, emerging research suggests GLP-1 medications may lower systemic inflammation, reduce cardiovascular events in high-risk individuals, and show protective effects for brain health and cognitive decline. There’s also growing interest in their role for autoimmune conditions, where they may help quiet an overactive immune response that persists even after lifestyle optimization. None of this means GLP-1s are for everyone. But they’re a tool, and a whole person physician uses every appropriate tool available while keeping lifestyle as the foundation. Menopause Hormone Therapy: Evolving With the Data I also brought up menopausal hormone therapy in our conversation, because roughly 90% of my patients are women in this ag

    54 min
  4. What If You’ve Been Thinking About Plant Protein All Wrong?

    6D AGO

    What If You’ve Been Thinking About Plant Protein All Wrong?

    Watch the full live cooking session with Chef Martin Oswald in the video above. Recipes for the creamy tofu scramble, tofu medallion with lupini bean cake, and peanut butter chocolate mousse can be found here. Join us in the Habit Healers Skool community where Chef Martin and I work together to bring culinary medicine and healing habits to you live every week in our exclusive community. Most people think about protein the way they think about a car battery. One source doing one job in one spot. You open the hood, point to it, and say, “There it is. That’s my protein.” A block of tofu on the plate, a scoop of beans in the bowl, and you call it handled. But what if you’ve been thinking about plant protein all wrong? Not because the sources are bad, but because the strategy is. That’s the idea Chef Martin Oswald brought to our live cooking session this week, and it changed how I think about building a plate. He calls it protein stacking, and the concept is so simple it’s almost annoying: instead of relying on a single protein anchor in a meal, you layer protein into every component, from the dressing to the sauce to the side dish and even dessert. The Strategy No One Talks About When Martin and I sat down to talk about protein and fiber (because pairing the two matters for blood sugar, satiety, and gut health), I expected him to walk through a list of high-protein plant foods. He did that. But then he did something more interesting. He cooked a full three-course meal where every single element carried protein, and none of them felt like they were trying. The walnut dressing on your salad? That’s not just fat and acid. That’s protein and alpha-linolenic acid. The hemp seeds blended into your chocolate mousse? Thirty-three grams of protein per hundred grams. The soy milk you splash into your tofu scramble instead of water? More protein than almond or oat milk, working in the background of every dish. Martin’s point is that most people who move toward plant-based eating make a common mistake. They identify one protein source per meal and stop there. They don’t think about the dressing, the binder, the dessert, or the cooking liquid as opportunities. But when you start stacking, those five or eight grams here and there add up fast. By the end of a three-course meal built this way, you’re easily looking at forty grams or more without ever feeling like you ate a “high-protein” diet. The Lineup Before Martin started cooking, he walked through his go-to plant protein sources and made a case for each one. A few stood out. Sunflower seeds are one of the most underrated options in the plant protein world. They pack serious protein per serving, they contain vitamin E, and they cost a fraction of what you’d spend on nuts like cashews or almonds. Martin calls them the best value protein next to peanuts, and he’s not wrong. You can fold them into a dressing at lunch, sprinkle them on breakfast, and blend them into a dessert at dinner. Pumpkin seeds carry even more protein per hundred grams and work as a topping, a snack, or a blended sauce base. Hemp seeds sit at the very top of Martin’s list. He treats them like a rescue ingredient, something you can drop into virtually anything (sauces, smoothies, baked goods, oatmeal) to boost the protein content without changing the flavor profile in any dramatic way. And then there are lupini beans. I’ve been telling people about lupini bean flakes for a while now, and Martin confirmed what I already suspected. They’re the king of the bean protein world. The flakes dissolve into oatmeal, stir into soups, and blend into patty mixtures with almost no resistance. If you only add one new ingredient to your pantry after reading this, make it lupini bean flakes. (These are my favorite.) Three Dishes, One Principle Martin cooked three things during our session, and each one demonstrated protein stacking in a different context. The Creamy Tofu Scramble This is Martin’s riff on the scrambled eggs he grew up eating in Austria, and he’s particular about texture. He crumbles the tofu by hand rather than cutting it into cubes, which gives you a softer, more egg-like mouthfeel. The trick that separates a mediocre scramble from a great one? Two things. First, a teaspoon of cashew powder stirred in with soy milk (not water, not oat milk) to build creaminess and add protein simultaneously. Second, a squeeze of lemon juice. Martin says acidity transforms tofu scramble into a completely different product, and based on how it looked on camera, I believe him. He served it over quinoa, stacking another protein layer underneath. Add avocado on top and you’ve got a breakfast (or dinner, honestly) that will keep you full for hours. The Tofu Medallion with Lupini Bean Cake This is the weekend dish, the one you make when you want to impress someone or just treat yourself. Martin sliced firm tofu through the center, cut medallion shapes with a round cutter, and then carved the edges smooth. That might sound fussy, but he explained that the rounded edges change the way the tofu feels in your mouth. Smoother, less rough on the palate. He marinated the medallions in what he calls the “umami bomb,” a sauce built on fermented black beans that carries enormous flavor. The leftover tofu trimmings? Those became the scramble. Nothing wasted. For the base, he made a cake (his word for it; I kept calling it a patty) from pureed chickpeas and cooked lupini bean flakes, bound with a flax egg and seasoned with the same umami sauce. The chickpea puree acts as the glue that holds everything together, and if you’re nervous about it falling apart, Martin’s advice is simple: use more chickpea puree and a little less lupini until you find the ratio that works for your hands and your pan. You can also add a tablespoon of arrowroot flour or tapioca starch to help it bind as it heats. He layered it all on a bed of steamed spinach, topped it with the roasted tofu medallion, added a spoonful of kimchi for fermented tang, and finished it with a pureed carrot sauce. (Pro tip from Martin: if you make carrot soup one day, that same soup becomes the sauce the next day. Restaurant logic applied at home.) Between the lupini beans, chickpeas, tofu, and spinach, this single plate carried roughly thirty plus grams of protein before you even count the walnut dressing on the salad course. The Peanut Butter Chocolate Mousse This is dessert where the protein isn’t an afterthought but the structural foundation of the whole thing. Martin made this two ways in one cup. The outside layer is a peanut butter cream: just peanut butter thinned with soy milk (or vanilla soy milk, which he says works beautifully) and stirred until smooth. If your peanut butter is stiff from the fridge, warm it gently in a water bath or microwave for a few seconds. The inside is a chocolate mousse made from hemp seeds blended with cocoa powder, soy milk, and a touch of vanilla. He sweetened his with maple syrup, though he usually reaches for date syrup. The key to getting it silky is either soaking the hemp seeds overnight or using a high-powered blender. If you try to shortcut this with a regular blender and dry seeds, you’ll end up with grit instead of mousse. Between the peanut butter, hemp seeds, and soy milk, this dessert carried around eight to ten grams of protein. That’s a protein bar disguised as something you actually want to eat. Martin also dropped an idea I can’t stop thinking about: swap the chocolate mousse for an espresso version. Blend hemp seeds with espresso, dates, and a little soy milk. Use that as the center, keep the peanut butter cream on the outside, and you’ve got something that belongs on a restaurant menu. A Quick Note on Fiber Before Martin started cooking, I brought up something I’ve been thinking about. When you puree nuts, seeds, or vegetables, a lot of people worry that you’re destroying the fiber. You’re not. Blending does what your teeth do. It breaks food into smaller pieces, but the fiber stays intact. You only lose fiber when you strain it out, like when you juice something and discard the pulp. This matters for anyone who struggles with digestion, especially as we get older. Martin mentioned a concept from Austrian health resorts called Schonkost, a gentle cooking approach that favors steaming and pureeing over raw preparations. For people in their seventies and eighties, raw vegetables at dinner can be genuinely hard to process. Blended soups and purees deliver the same fiber and nutrients in a form the body can handle more easily. So if you’ve been avoiding smoothies or pureed soups because you thought blending destroyed the good stuff, you can let that one go. The Habit If protein stacking sounds complicated, it isn’t. Start with one change. Next time you make a salad dressing, use a nut or seed base instead of plain oil and vinegar. That’s it. You’ve just added protein to a part of your meal that normally has none. From there, you can start thinking about your cooking liquids (soy milk over water), your toppings (hemp seeds, pumpkin seeds), and your desserts (blended nut or seed creams). You’re not aiming for perfection here. You’re just recognizing that protein doesn’t have to live in one place on your plate. It can show up everywhere, doing its work in the background of every bite. Don’t forget to get Martin’s recipes here. Get full access to The Habit Healers at drlauriemarbas.substack.com/subscribe

    49 min
  5. Why You Should Never Trust a Percentage in a Headline

    MAR 4

    Why You Should Never Trust a Percentage in a Headline

    You’ve seen the headlines: “Drug cuts heart attack risk by 50%.” It sounds dramatic. Reassuring. Urgent. But in this episode, I show you exactly how that single percentage is designed to mislead you. I break down the difference between Relative Risk and Absolute Risk — and why one makes for great marketing while the other tells you what actually matters to your life. We walk through real numbers together, translate medical jargon into plain English, and expose how a “50% reduction” can quietly mean a 1% benefit. Then we go deeper. I explain why a result can be “statistically significant” and still clinically useless. We unpack the famous p-value (and why it doesn’t mean what most people think it means). I teach you how to read a Confidence Interval like a pro — including the crucial “Line of No Effect” that determines whether a study actually worked or quietly failed. And finally, I give you the most practical tool of all: the Number Needed to Treat. This is the number that answers the only question that really matters: How many people have to take this drug for one person to benefit? If you’ve ever felt overwhelmed by medical research, confused by health news, or skeptical of miracle claims but unsure why — this episode is your toolkit. By the end, you won’t just read headlines. You’ll decode them. Dr. Marbas Substack: https://drlauriemarbas.substack.com/ A Big Thank You To Our Sponsors: If you want the best supplement to help you on your plant-based journey, you have to try Complement: https://lovecomplement.com/?aff=62 Get full access to The Habit Healers at drlauriemarbas.substack.com/subscribe

    10 min
  6. What Happens When You Hand a Chef a Neuroscientist’s Grocery List?

    FEB 28

    What Happens When You Hand a Chef a Neuroscientist’s Grocery List?

    This article is based on my conversation with Chef Martin Oswald, author of the Chef Martin’s Healing Kitchen Substack, this is day 6 and the finale of the first-ever Brain Health Substack Summit, hosted by The Habit Healers. If you missed Day 1 of our Brain Health Summit with Julie Fratantoni, PhD you can watch it here. We discussed how to exercise your brain day to day. If you missed Day 2 of our Brain Health Summit with Annie Fenn, MD you can watch it here. We discussed foods to decrease dementia risks. If you missed Day 3 of our Brain Health Summit with Jud Brewer MD PhD you can watch it here. We discussed how to unwind your anxiety. If you missed Day 4 of our Brain Health Summit with Dr. Dominic Ng, you can watch it here. We discussed microplastics in your brain. If you missed Day 5 of our Brain Health with Chris Miller MD, you can watch it here. We discussed brain inflammation. Click here for the 25 recipes, Chef Martin, created for the Brain Health Summit! Months before the first Brain Health Substack Summit interviews aired, Chef Martin Oswald and I did something a little unusual. We reached out to each of our experts and asked them a simple question: What are your favorite brain-supporting ingredients? They each sent back a list. They had no idea what would happen next. What happened next was Chef Martin Oswald. From his kitchen in Vienna, Martin took those ingredient lists and built original recipes around every single one. The experts never saw it coming. Dr. Annie Fenn didn’t know her ingredient picks would become a Northern Moroccan Charmoula. Dr. Dominic Ng had no clue his favorites would land on a plate with Pumpkin Seed–Crusted Salmon with Sauce Gribiche, Roasted Beets & Leeks. Each recipe was a surprise, designed to show that the science these experts study can actually end up as something you’d want to eat on a Tuesday night. This final session of the summit brought it all together. Martin walked through the dishes he created for each expert, and in doing so, he connected the dots between five days of interviews spanning inflammation, microplastics, the gut-brain axis, habit change, and blood sugar regulation. What became clear, sitting there watching him plate dish after dish, was that the same core ingredients kept showing up across every expert’s list. The overlap was the point. The Sodium Problem (and the Flavor Fix) One of the first things Martin addressed was sodium. High blood pressure damages the brain over time, and most people eat far more sodium than they realize. This came up in our conversations with Dr. Chris Miller about neuroinflammation and again in our discussions about cardiovascular health and its direct link to cognitive decline. Martin’s approach to cutting sodium is not about deprivation. He builds flavor in layers. First, increase potassium-rich foods like sweet potatoes, beans, and greens. Then lean on acidity: balsamic drizzle, pomegranate reduction, lemon juice. These cover the flavor gap that opens when you pull back on salt. Next, fermented foods like miso, sauerkraut, and kimchi add a tangy, funky depth that salt alone can’t replicate. And miso in particular carries enough potassium to offset its own sodium content, making it close to neutral for blood pressure. He also pointed to something practical: reduced-sodium salt is easy to find and an immediate swap anyone can make today. Combined with generous use of fresh herbs and ground spices, you’re not mourning the loss of salt. You’re replacing it with something more interesting. The Blood Sugar Thread If there was a single theme connecting every expert on this summit, it was blood sugar. Martin noticed it too. Across the original recipes he developed for the summit, almost none contain high-glycemic foods. The experts didn’t coordinate on that. They arrived at the same place independently, which tells you something about how central glucose regulation is to brain health. Martin’s dishes rely on low glycemic load ingredients: beans, leafy greens, whole grains like barley, and plenty of non-starchy vegetables. He also explained the practical difference between glycemic index and glycemic load. Beets, for example, have a higher glycemic index when compared to sugar as a reference point. But the glycemic load of a real serving of beets is relatively small because of the fiber content. The fiber slows the glucose spike. This distinction matters because it keeps people from avoiding perfectly good foods based on a misleading number. He also mentioned a useful eating strategy that came up in our conversation, eat the non-starchy vegetables first, then the beans or grains. That sequence alone can blunt the glucose rise from a meal. It costs nothing and requires no special equipment. Brain Health in a Bowl: Feeding the Gut-Brain Axis The gut-brain connection came up with nearly every expert. Annie Fenn, MD discussed it. Dr. Chris Miller went deep on neuroinflammation. Dominic Ng talked about it from a microplastics angle. Martin took all of that and built dishes that combine prebiotics and probiotics in a single meal. One of his standout techniques is adding miso to cashew butter and letting it sit for two days. The probiotics from the miso colonize the entire batch. Add a splash of sourdough liquid, and you’ve boosted the fermentation further. That cashew butter then becomes a topping for a sauerkraut soup. When you cook sauerkraut, you kill the beneficial bacteria, but the cooked kraut still functions as a prebiotic, feeding the good bacteria you’re scooping on top. The result is a single bowl delivering both the prebiotic and the probiotic. That kind of layering is exactly what the science supports, and Martin builds it into dishes that make sense for a weeknight. The Anti-Inflammatory Superbowl and the Color Rule For Chris Miller MD ’s recipes, Martin created an antioxidant board packed with about nine different plant foods in a single dish. The principle is visible before you even taste it: every color on the plate represents a different phytonutrient. Red onions, dark greens, golden turmeric, deep purple blueberries. Both Chris Miller and Dr. Jud Brewer independently flagged blueberries as a priority ingredient, which gives you a sense of how strong the evidence is behind them. Martin’s practical advice here was refreshingly low-pressure. The healthiest food, he said, is the one you actually have in your kitchen. You don’t need to replicate every recipe exactly. The goal is to get more color and more variety onto the plate, using whatever you have on hand. He also built potassium into this dish deliberately, bringing the sodium-balance strategy full circle. And the turmeric was there because Dr. Miller specifically requested it for its anti-inflammatory properties. Every ingredient was pulling double or triple duty. Microplastics, Salmon, and What You Can Actually Do Our conversation with Dr. Dominic Ng about microplastics was one of the more startling interviews of the summit. He shared research showing that human brains contain roughly seven grams of microplastics, the equivalent weight of a plastic spoon. He brought an actual plastic spoon as a prop during the interview, which drove the point home in a way numbers alone can’t. But the research also contained something reassuring. Studies comparing younger and older adults found similar levels of microplastic accumulation, suggesting the brain reaches an equilibrium. We appear to be filtering microplastics out, likely through the glymphatic system, which was only discovered in 2012. That system acts like a nighttime cleaning crew for the brain, clearing waste during deep sleep. For Martin’s dish honoring Dominic’s ingredient list, he built a plate of spinach, beets for nitrates, and salmon crusted with pumpkin seeds for magnesium. The salmon delivers EPA and DHA, the omega-3 fatty acids that came up repeatedly throughout the summit. For people who don’t eat fish, Martin noted that beans and tofu can stand in for the salmon, though a reliable source of omega-3s remains important regardless. The practical takeaways from the microplastics conversation were grounded and doable: use a HEPA filter, vacuum regularly, mop with a wet mop to capture particles instead of pushing them airborne, and protect your sleep so the glymphatic system can do its job. Sleep is not a luxury. It is maintenance. Julie Fratantoni’s Matcha Dishes and the Power of Fennel Julie Fratantoni, PhD brought brain exercises to the summit, and her ingredient picks led Martin to create two matcha-based dishes. One featured a matcha and hemp seed sauce thick enough to cling to roasted vegetables and fennel. The other was a konjac noodle dish with salmon and matcha. Martin shared that he’d eaten enormous amounts of fennel while losing 30 pounds in two months. Fennel has a structural bite to it that most vegetables lack. You have to chew it slowly, and that mechanical process keeps you feeling full in a way that watery vegetables like cucumber simply don’t. If you’re working on weight and find yourself unsatisfied after meals, fennel is worth trying for that reason alone. Both of Julie’s dishes were, predictably, low glycemic load. The yogurt, the blueberries, the fiber-rich components all kept blood sugar stable. Martin pointed this out, and it reinforced the theme: when you cook with the ingredients these experts recommend for brain health, you end up with meals that are also good for metabolic health. The two are not separate problems. The Blueberry Dessert That Made a Community Member’s Day For Jud Brewer MD PhD ’s recipes, Martin created a blueberry bake that one of our Habit Healers community members, made the very next day. She reported back that it was so good the pan was already empty before she could take a photo. The recipe is remarkably simple: plant-based yogurt mixed with a tablespoon of tapioca flour per cup of liquid, poured over

    37 min
  7. FEB 27

    Is Your Body Secretly Inflaming Your Brain Without You Knowing It?

    This article is based on my conversation with Chris Miller MD, author of the Chris Miller, MD Substack, this is day 5 of the first-ever Brain Health Substack Summit hosted by The Habit Healers. Click here to join, our final conversation tomorrow with Chef Martin Oswald and we will dive into all the delicious recipes he created for each of our Brain Health Substack Summit panelists. If you missed Day 1 of our Brain Health Summit with Julie Fratantoni, PhD you can watch it here. We discussed how to exercise your brain day to day. If you missed Day 2 of our Brain Health Summit with Annie Fenn, MD you can watch it here. We discussed foods to decrease dementia risks. If you missed Day 3 of our Brain Health Summit with Jud Brewer MD PhD you can watch it here. We discussed how to unwind your anxiety. If you missed Day 4 of our Brain Health Summit with Dr. Dominic Ng, you can watch it here. We discussed microplastics in your brain. Subscribe to get the updates on the Brain Health Summit each day! There is a particular kind of tired that most people over 45 know well. You wake up and the day already feels heavy. You have a list of things to do and the motivation to do exactly none of them. You sit down to read something and the words just slide off the surface of your brain. You used to be sharp. You used to be a person who did things. And now you’re wondering what happened. Most people chalk it up to aging. Or stress. Or some personal failing they can’t quite name. And what Chris Miller MD would tell you is that all of those people are wrong. Chris is an emergency physician who spent over a decade working in the ER before her own body started fighting against her. It began with a swollen finger. Then more fingers. Then came the diagnosis: lupus, an autoimmune disease in which the immune system, the very thing designed to protect you, turns on your own tissue with alarming aggression. Her inflammation markers were sky-high. Her whole body was under siege. And eventually, the ER became too physically demanding to keep working in. But what struck Chris most wasn’t the joint pain. It was what happened to her brain. “I felt foggy,” she said during our discussion. “I was not motivated. I thought something was wrong with me, like I was lazy. But really, it was inflammation. My neurotransmitters were off.” That distinction matters enormously. Because if you’re lying on the couch at 3 p.m. unable to will yourself into action, and the actual problem is an immune response happening inside your skull, then no amount of self-criticism will fix it. You’re yelling at yourself for something your brain chemistry is doing without your permission. What’s Going on Exactly? To understand what’s going on, you need to understand what inflammation actually is. And the simplest way to think about it is as a security system. Your immune system runs 24 hours a day, patrolling your body for threats. A virus enters through your nose, the immune system grabs it. You cut your finger, the immune system repairs the wound. You breathe in polluted air, the immune system works to clear it out. Roughly 70 percent of your immune system sits in your gut, which makes sense when you consider that one of the biggest entry points for foreign substances is through the food you eat. All of that is normal and necessary. The problem starts when the security system gets overstimulated. If you’re eating highly processed food at every meal, breathing contaminated air, sleeping poorly, and running on stress hormones all day, your immune system never gets a break. It keeps releasing inflammatory signaling molecules called cytokines (think of them as alarm bells), which tell the rest of the body to ramp up the immune response even further. Normally, inflammation spikes when there’s a threat and then settles back down. But when the threats never stop coming, the inflammation goes up and stays up. That’s chronic inflammation. And that’s when things start breaking. Fortunately, your brain has a built-in defense against all this: a structure called the blood-brain barrier. Picture the lining of a normal blood vessel as a single layer of cells. The blood-brain barrier is about 50 times tighter than that, reinforced with specialized support cells called astrocytes. It’s like a fortified wall around your brain, keeping out the inflammatory chaos happening in the rest of your body. But here’s what Dr. Miller emphasized: when inflammation is chronically elevated, that wall starts to crack. The cytokines get through. And once they’re inside, they activate the brain’s own immune cells, called microglia, which then start releasing their own inflammatory signals. Now you have inflammation inside the fortress. What Brain Inflammation Actually Feels Like The symptoms are maddeningly vague, which is part of what makes this so tricky to spot. Chris described the most common ones from both her clinical practice and her own experience. Fatigue is at the top of the list. Not the kind of tired you feel after a bad night’s sleep, but a bone-deep exhaustion that doesn’t lift. More than 80 percent of people with autoimmune conditions describe fatigue as their number one symptom, and Dr. Miller points directly to brain inflammation as the reason. Then there’s the motivation problem. When microglia are activated and releasing cytokines inside the brain, they suppress dopamine, the chemical that drives you to start and complete tasks. Less dopamine means less motivation. They also reduce serotonin, the chemical involved in mood regulation. So now you’re tired, unmotivated, and a little depressed. The problem is biological, not personal. And then there’s brain fog. Chris struggled to even describe it, which she acknowledged was sort of the point. “It feels like things are distant,” she said. “Like you want to calculate something and you almost can’t get there. Even though you know what you want to do, you just can’t.” I’ve dealt with Hashimoto’s thyroiditis (an autoimmune condition affecting the thyroid gland) for nearly 30 years, and I know exactly what she means. It feels like wading through molasses. You can see the thought arriving. You watch it come toward you. And then it either takes forever to land or it drifts right past. Headaches can also be a sign. So can anxiety. The overall picture is of a brain that isn’t broken in any dramatic way but is running on degraded hardware. The Surprising List of Things That Set Your Brain on Fire Some of the causes of neuroinflammation (the medical term for inflammation specifically in the brain) are predictable. Autoimmune diseases. Head injuries. COVID and other serious infections. When you have a bad flu and feel that total withdrawal from the world, the foggy detachment, that’s your brain responding to the inflammatory cascade in your body. But some causes are less obvious. Blood sugar spikes, for instance. You don’t need to be diabetic for this to matter. Even if your fasting blood sugar and your A1C (a measure of average blood sugar over three months) look normal, the spikes that happen after meals can still damage the blood-brain barrier. Every time your blood sugar shoots up after eating, your insulin surges to bring it back down, and that surge creates a small hit of inflammation that chips away at the barrier over time. Low estrogen is another one. Estrogen is strongly anti-inflammatory, which helps explain why so many women experience sudden cognitive changes during perimenopause and menopause. I lived this firsthand. I had such an abrupt cliff from perimenopause to menopause that I went from fine one week to not fine the next. That rapid drop in estrogen removes a major source of inflammation protection for the brain. Chronically elevated cortisol, the stress hormone, directly activates the microglia. So living in a constant state of stress doesn’t just feel bad. It is physically inflaming your brain. Air pollution is a culprit too. Chris described reading studies linking air pollution to dementia through glial cell activation. She even mentioned her frustration with neighbors whose wood-burning fireplace pollutes the air in her neighborhood. It’s one of those things that feels insignificant, a neighbor’s fireplace, but breathing contaminated air over months and years adds up. And poor sleep. Sleep is arguably the most important factor in this whole equation, which brings us to one of the most remarkable discoveries in neuroscience in the last two decades. The Brain’s Nighttime Cleaning Crew Until about 2012, scientists didn’t know the brain had its own waste-clearance system. The rest of your body has the lymphatic system, a network of vessels that filters out waste and toxins. But the brain was thought to operate differently. Then researchers discovered the glymphatic system (the “g” comes from glial cells, which play a central role in the process), and it changed the way we think about sleep. The glymphatic system surrounds the brain. During deep sleep, it activates, flowing through and around brain cells to clear out metabolic waste, damaged proteins, inflammatory debris, all the byproducts of a brain that’s been thinking and firing all day. Every time your neurons fire, they produce a form of cellular exhaust called reactive oxidative stress. The glymphatic system is what takes out that trash. I like to use an analogy when I explain this to patients. During the day, the office workers are busy at their desks, tossing things into the trash can as they go. At night, the cleaning crew comes in and empties the bins, mops the floors, hauls everything away. If the cleaning crew never shows up, or only gets 20 minutes to do a full night’s work, the garbage piles up. That’s exactly what happens when you don’t get enough deep sleep. The microglia that were activated during a stressful day, or by blood sugar spikes, or by any of the other triggers, are

    42 min
  8. FEB 26

    What If the Most Dangerous Thing in Your Brain Wasn’t a Disease?

    This article is based on my conversation with Dr. Dominic Ng , author of the Brain Health, Decoded Substack, this is day 4 of the first-ever Brain Health Substack Summit hosted by The Habit Healers. Click here to join tomorrow for Brain Health Substack Summit Day 5 with Chris Miller MD, where will discuss the brain and inflammation. *Our final conversation will be on Saturday with Chef Martin Oswald and we will dive into all the delicious recipes he created for each of our Brain Health Substack Summit panelists. If you missed Day 1 of our Brain Health Summit with Julie Fratantoni, PhD you can watch it here. We discussed how to exercise your brain day to day. If you missed Day 2 of our Brain Health Summit with Annie Fenn, MD you can watch it here. We discussed foods to decrease dementia risks. If you missed Day 3 of our Brain Health Summit with Jud Brewer MD PhD you can watch it here. We discussed how to unwind your anxiety. Subscribe to get the updates on the Brain Health Summit each day! In December 2024, a neuropathologist named Elaine Bearer was looking through her microscope at brain tissue from two deceased dementia patients at the University of New Mexico when she spotted something she couldn’t explain. Strange brown lumpy things, she called them. They weren’t cells. They weren’t proteins. They weren’t any of the usual suspects you find when you go looking for what killed someone’s brain. They were plastic. This was the opening act of a study that would be published in Nature Medicine in early 2025 by Dr. Matthew Campen, a toxicologist at the University of New Mexico. His team did something no one had done at this scale before. They took brain tissue samples from people who had died in 2024 and compared them to brain tissue from people who had died in 2016. They dissolved the tissue into a slurry, spun it in a centrifuge, and pulled out a small pellet of undissolved material. Then they heated that pellet to 600 degrees Celsius. What they found was about 4,800 micrograms of plastic per gram of brain tissue. If you gathered it all together, it would weigh roughly seven grams. That is the weight of a standard plastic spoon. When I sat down with Dr. Dominic Ng for Day Four of the Brain Health Substack Summit, he held up that exact prop. A plastic spoon. “Don’t say I don’t come prepared,” he said from his home in Scotland. Dr. Ng is a physician neuroscientist. He grew up in Hong Kong, moved to the UK for medical school, and took one of his earliest jobs working for the CJD surveillance unit, traveling around the country diagnosing prion disease (a rare and fatal brain condition caused by misfolded proteins). That work led him deeper into neurology, and eventually into Alzheimer’s disease and motor neuron disease, which Americans know as ALS or Lou Gehrig’s disease. He is now completing his PhD at the University of Edinburgh under some of the leading researchers in neurodegeneration and aging, and he writes the popular Substack newsletter Brain Health, Decoded. He came on the summit to talk about microplastics. And the first thing he wanted people to understand is that this problem, while real, is more complicated than the headlines make it sound. The Spoon in Your Head The Campen study found that the amount of plastic in human brains had roughly doubled between 2016 and 2024. That tracks with what we’d expect as global plastic production continues to climb. More than half of all plastic ever manufactured has been produced since 2002, and production is on pace to double again by 2040. But the study also turned up a finding that nobody predicted. Age didn’t matter. The brain of a 24-year-old and the brain of an 84-year-old contained approximately the same amount of plastic. Think about that for a second. If microplastics were simply accumulating over a lifetime the way plaque builds up in arteries, you’d expect people in their eighties to have far more than people in their twenties. They’ve been alive longer. They’ve eaten more food, breathed more air, drunk more water from plastic bottles. The older brain should be packed tighter. It wasn’t. And that one observation tells us something important. The brain appears to be clearing microplastics at roughly the same rate it takes them in. There is some kind of equilibrium going on, a biological trade where the brain absorbs a certain load and then dumps it. The amounts are the same across age groups because the intake and the outflow have reached a balance. This is the first piece of genuinely good news in the microplastics conversation. Your brain isn’t just passively filling up like a landfill. It’s fighting back. The Hitchhiker Problem To understand why microplastics are concerning even if the brain can partially manage them, you need to know what plastic actually is. Dr. Ng broke it down this way. Plastics are polymers, which means they are long chains of small molecules derived from fossil fuels. The word “polystyrene” means multiple styrenes linked together. “Polyester” means multiple esters. These long molecular chains are what give plastic its structure. But the chains alone don’t give plastic all the properties we rely on, things like flexibility, durability, and heat resistance. To achieve those, manufacturers add chemicals. Phthalates go into PVC and cling film to make them bendable. Bisphenols go into thermal receipt paper and food containers. PFAS, sometimes called forever chemicals, coat nonstick pans. And this is where the real trouble starts. Microplastics, Dr. Ng explained, probably aren’t doing most of their damage on their own. They’re doing damage because they carry things with them. He used an analogy anyone who’s stored leftover tomato sauce in a plastic container will recognize. You know how the red stain never fully comes out? That happens because plastic absorbs what it touches. The same thing happens in the environment. As plastic breaks down into tiny fragments, about the size of a virus at around 200 nanometers, those fragments pick up environmental toxins, heavy metals, and industrial chemicals. So when microplastics enter your body through the food you eat, the water you drink, or the air you breathe, they don’t travel alone. They bring hitchhikers. And those hitchhikers, the bisphenols and phthalates and PFAS, are what scientists call endocrine disruptors. Your endocrine system is essentially the body’s internal messaging network. It controls your hormones, which in turn regulate your body temperature, blood sugar absorption, metabolism, thyroid function, and reproductive health. When you throw foreign chemicals into that system, the effects ripple everywhere. Research has linked these disruptors to increased risk of type 2 diabetes, heart attacks, and kidney disease. Why Your Brain Is the Perfect Trap A single liter of bottled water contains roughly 250,000 plastic particles. Your indoor air carries about 500 particles per cubic meter, shed from your clothing, furniture, and carpet fibers. It enters through your gut, crosses into your blood, and from there, goes everywhere. But the brain accumulates far more than other organs. In the Campen study, brain tissue contained concentrations seven to thirty times higher than the liver or kidneys. Dr. Ng explained why with another kitchen analogy. “Have you ever tried to clean bacon grease out of a plastic container?” he asked. Fat clings to plastic because both are lipophilic, meaning they are chemically attracted to each other. Your brain, by dry weight, is approximately 60 percent fat. Your liver and kidneys contain much lower percentages. On top of that, the brain receives about 25 percent of your heart’s total blood output, despite accounting for only about 2 percent of your body weight. So you have a high-fat organ with a massive blood supply. If microplastics are floating through your bloodstream, the brain is essentially a magnet for them. The technical term for the layer of fat that insulates brain cells is the myelin sheath. It wraps around neurons and helps regulate the speed of electrical signals. Campen’s team found that microplastics tend to concentrate in exactly these fatty myelin cells. The plastic lodges itself in the insulation of your wiring. The Brain’s Drainage System The reason younger and older brains contain similar amounts of plastic brings us to one of the more remarkable discoveries in modern neuroscience, and it happened only about a decade ago. In 2012, researchers identified the glymphatic system, a waste-clearance network in the brain. Think of it as the brain’s internal plumbing. While you sleep, cerebrospinal fluid (the clear liquid that cushions your brain and spinal cord) flushes through channels between brain cells, washing away metabolic waste products. This is the same system responsible for clearing out the protein fragments associated with Alzheimer’s disease. Dr. Ng believes this is almost certainly how the brain manages its microplastic load. There is no published research yet directly connecting glymphatic clearance to microplastic removal, and he was careful to say that. “We’re still in pretty early days when it comes to this research,” he told me. But the logic is sound. The glymphatic system is the only known route the brain has for clearing foreign material, and it is most active during deep sleep. Exercise also appears to enhance its function. Which means the same habits that protect you from Alzheimer’s disease may also be protecting you from microplastic accumulation. Sleep, exercise, and keeping your brain’s waste-clearance system running well. The Dementia Question One finding from the Campen study raised eyebrows. Brains from patients who had died with dementia contained three to five times more microplastics than brains from patients without dementia. That sounds alarming. But Dr. Ng pointed out what the researchers themselves noted: the cause likely

    35 min
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Welcome to The Habit Healers Podcast—where transformation starts with a single habit. Hosted by Dr. Laurie Marbas, this podcast is for anyone ready to break free from chronic health struggles, rewire their habits, and create lasting healing. Through powerful stories, science-backed strategies, and real-world tools, we dive deep into the micro shifts that lead to massive health transformations. You’ll learn how to heal beyond prescriptions—how to nourish your body, reprogram your mind, and build the habits that make vibrant health effortless. Whether you’re looking to reverse disease, boost energy, or finally make health a way of life, this podcast will show you how. Because true healing isn’t about willpower—it’s about design. And you’re always just one healing habit away. drlauriemarbas.substack.com

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