Extend Podcast with Darshan Shah, MD

Hormones influence far more than reproductive health. They affect your sleep, mood, metabolism, muscle, bone health, brain function, stress response, and how you age—yet hormone health is still often reduced to a handful of numbers on a standard blood test. In this episode, I'm joined by Dr. Pamela Smith, a physician who has spent decades practicing and teaching personalized medicine, to break down what women and men need to understand about hormone replacement therapy, healthy aging, and disease prevention. We explore estrogen, progesterone, testosterone, DHEA, cortisol, thyroid hormones, insulin, and one hormone many people have never even heard of: pregnenolone. More importantly, we discuss why hormone optimization should never be one-size-fits-all. Dr. Smith explains why two people of the same age may need completely different approaches, why testing before treatment matters, and how hormones interact with everything from gut health and methylation to toxins, blood sugar, bone health, and cancer risk. In…

What if AI could change the way we understand, manage, and optimize our health? In today's episode, my guest is Rajeev Kapur, a leading AI advisor, educator, speaker, and author who helps non technical leaders understand how to turn artificial intelligence into practical, actionable results. We dive into AI in healthcare, personalized health, health optimization, and the ideas behind our co authored book, Your New Health OS. We explore how artificial intelligence could help move healthcare beyond simply treating disease and toward a more proactive approach focused on understanding the individual, connecting health information, and optimizing long term health. In this episode, we learn: • How AI could transform the future of healthcare • The difference between disease care and true health optimization • How AI can empower patients to better understand their own health data • How artificial intelligence can connect insights across different medical specialties • How AI could improve communication between…

What if your gut health is the missing piece behing your hormones, energy, metabolism, and how you feel every day? Today, I sit down with Dr. Cassie Smith, a double board-certiied endocrinologist and internal medicine physician who has taken a deeper look at the connection between gut health, hormones, thryoid function, metabolism, and overall health. We talk about why "normal" lab results don't always mean optimal health, how gut health can influence hormone metabolism, the role of stress and inflammation and why understanding your individual biology matters when it comes to feeling your best. In this episode, we learn: The connection between gut health and hormones Why gut health matters for thyroid and metabolic health The differnce between "normal" and optimal hormone levels How stress can affect the gut, hormones, and inflammation What women should know about hormones during perimenopause and menopause The role of fiber, nutrition, and daily habits in gut health How stool testing and the GI Map can…

What if we stopped guessing about the brain and started measuring it? In today's episode, my guest is Sat Randhawa of One-Hype Wellness, where he and his team are focused on using brain mapping and neurotechnology to better understand how each individual brain functions. We dive into QEEG brain mapping, neurofeedback, neuroplasticity, and brainwave analysis - and explore why there may not be a one-size-fits-all approach when it comes to the brain. Sat also shares insights into how technology is being explored across areas including focus, ADHD, stress, cognitive health, athletic performance, and recovery. In this episode, we learn: How QEEG brain mapping works What different brainwaves can tell us Why every brain may require a personalized approach How neurofeedback and neuroplasticity connect How brain mapping is being explored for performance and recovery Why measuring the brain could change how we approach brain health Sat brings a practical, data-driven perspective from his work with One-Hype Wellness,…

Most people know they should eat more fiber. But what we're learning about fiber, gut health, and the microbiome goes far beyond digestion. Your gut contains trillions of microbes that depend on what you eat—and different types of fiber feed different bacteria. Those microbes can influence everything from blood sugar regulation and metabolic health to cholesterol and the way your digestive system functions. That means it's not just about getting more fiber. The diversity of the fiber you eat matters, too. In this episode, I'm joined by Colleen Cutcliffe, PhD, microbiome scientist and co-founder and CEO of Pendulum Therapeutics, to break down what the latest science tells us about fiber and the gut microbiome. Colleen explains the difference between soluble and insoluble fiber, why most people aren't getting enough, and how fiber and prebiotics support beneficial gut bacteria. We also explore how the microbiome changes throughout life, the role of polyphenols, and the emerging connection between specific gut…

What if the biggest mistake you're making with your health isn't what you're eating - but the way you're thinking about nutrition in the first place? In this episode, I'm joined by Dr. Joey Munoz, a PhD in Nutrition Science and an evidence-based nutrition and fitness educator. We have a fascinating conversation about why so many traditional approaches to dieting fail, what actually makes a healthy diet sustainablem, and how we can thing about nutrition in a way that supports long-term health rather than short-term results. Dr. Joey also shares his own experience with body image and dieting, and how that journey ultimately led him to pursue advanced degrees in nutrition science and take a more evidence-based approach to health and fitness. We get into some of the biggest questions I hear all the time: How much protein do we really need? Does meal timing matter? What role do fiber and whole foods play? Should we be worried about carbohydrates, dietary fat, or ultra-processed foods? And what actually helps us…

What if the fatigue, brain fog, low energy, and other symptoms we associate with getting older actually begin much deeper—at the level of our cells? I've followed Dr. Will Cole's work for years, and his approach to gut health and functional medicine played an important role in my own health journey. Now he's taking that conversation one step further with his new book, Heal Your Cells, exploring what's happening inside our cells as we age—and what we can do to support them. In this conversation, we break down the emerging science of cellular health and longevity, including why different organs may age at different rates, how mitochondrial dysfunction affects energy, and the everyday factors that can accelerate cellular aging. In this episode, you'll learn: Why cellular health may be the next frontier of longevity How your biological and organ age can differ from your chronological age How toxins and nutrient deficiencies can affect cellular function Why mitochondrial health is critical for energy, metabolism,…

What if medicine could do more than manage disease—and actually help the body repair itself? Regenerative medicine is moving quickly, but the world of stem cells, PRP, exosomes, and cellular therapies can be incredibly confusing. In this conversation, I sit down with Dr. Wiggers to separate what we can do today from what may be coming next. We start with the basics: what stem cells actually are, how PRP and orthobiologics work, and the difference between using your own cells versus donor-derived products. Then we go deeper into one of the most fascinating areas of regenerative medicine: MUSE cells, a unique population of stress-enduring stem cells being studied for their ability to respond to injury and support tissue repair. In this episode, you'll learn: • How stem cells, PRP, exosomes, and other regenerative therapies differ • What MUSE cells are and why researchers are so interested in them • How stem cells may respond to signals from injured tissue • Why the age and source of biological material can…

What if your eyesight is 20/20—but your vision still isn't working the way it should? Dr. Bryce Appelbaum specializes in functional vision and the connection between the eyes and the brain. In this conversation, he explains why seeing clearly is only one piece of vision—and how the brain's ability to process what we see can influence reading, focus, coordination, balance, motion sickness, athletic performance, and everyday life. We also explore what hours of daily screen time may be doing to our visual system. Our eyes and brains weren't designed to spend all day focused on a screen inches from our faces, and Dr. Appelbaum explains how sustained near work can contribute to eye strain, headaches, fatigue, and visual stress—especially in children. In this episode, you'll learn: • The difference between eyesight and vision—and why 20/20 vision doesn't tell the whole story • How screen time may be affecting the eye-brain connection in both children and adults • Why reading difficulties, poor focus, clumsiness,…

What happens when optimizing your health starts taking over your life? Ben Greenfield has spent decades at the forefront of biohacking, fitness, human performance, and longevity—testing the technologies, tracking the biomarkers, competing at an elite level, and pushing his body to its limits. But after years of relentless self-optimization, he realized something important: living longer means very little if the pursuit of longevity takes you away from the people and experiences you're trying to live longer for. In this conversation, Ben opens up about the side of biohacking we don't talk about enough. He shares how his obsession with performance and optimization affected his marriage, his relationship with his children, and his own sense of fulfillment—and the moment he realized his priorities had to change. We explore how to find the line between taking care of your health and becoming consumed by it, why relationships and community may be among the most powerful longevity tools we have, and how Ben has…

What if the fatigue, brain fog, inflammation, or unexplained symptoms you're experiencing aren't starting inside your body—but in the environment around you? Dr. Jill Carnahan knows this story from both sides of the exam room. At just 25, while still in medical school, she was diagnosed with breast cancer. Months after aggressive chemotherapy, she was diagnosed with Crohn's disease. Her search for answers ultimately transformed the way she practiced medicine and led her deep into the connections between gut health, environmental toxins, mold exposure, and chronic illness. In this conversation, we unpack the hidden environmental exposures that may be affecting your health and Dr. Carnahan's "toxic bucket" theory for understanding why the same exposure can affect two people very differently. We go deep on mold toxicity and mycotoxins: where mold can hide in your home, symptoms that may warrant a closer look, why a single mold test doesn't tell the whole story, and what a more comprehensive evaluation can…

Walk into any supplement aisle—or scroll through social media—and you'll find thousands of products promising better energy, performance, brain health, and longevity. But which supplements actually work? And how do you know what's really inside them? My guest is Jeff Byers, a former NFL athlete and the co-founder of Momentous, a performance nutrition company built around rigorous standards for supplement quality, sourcing, testing, and efficacy. His path into health and performance started long before Momentous. As a freshman football player at USC, a devastating hip injury led to two major surgeries and the possibility that he might never play again. That experience forced him to rethink his identity beyond football, eventually earning his MBA before going on to play in the NFL—and later channeling that same resilience into entrepreneurship and human performance. In this conversation, we clear up the confusion around supplements and get practical about what actually matters. We break down four foundational…

What if the reason you're still sick isn't because there's no answer—but because no one has looked deeply enough for the root cause? My guest, Dr. Mark Hyman, is one of the world's leading voices in functional medicine, a bestselling author, physician, and founder of The UltraWellness Center. After navigating serious health challenges himself, he built his career around a different approach to chronic illness: stop simply naming the disease and start asking why it happened in the first place. We break down what functional medicine actually is—and why people struggling with mold illness, Lyme disease, MCAS, autoimmune disease, chronic fatigue, brain fog, and unexplained inflammation can spend years moving from specialist to specialist without getting to the underlying problem. We also discuss the new partnership between The UltraWellness Center and Next Health. The UltraWellness Center specializes in deep functional-medicine evaluation for complex chronic conditions, while Next Health provides physician-led…

What if ADHD isn't just an attention problem—but also a problem of emotional regulation? My guest, Dr. Sasha Hamdani, is a board-certified psychiatrist, ADHD specialist, author, and someone who has lived with ADHD herself. She brings a unique perspective to a part of ADHD that often gets overlooked: emotional sensitivity. We explore why some people feel emotions faster, more deeply, and for longer—and what's actually happening in the brain when a small trigger sends you into an emotional spiral. Dr. Hamdani explains the relationship between the amygdala, frontal lobe, dopamine, executive function, and emotional regulation, and why ADHD can sometimes be confused with anxiety, depression, trauma, or other conditions. But this conversation goes far beyond diagnosis. We get into practical tools for managing emotional overwhelm in real time—from delaying your response to a triggering text to moving your body when your nervous system is activated—and why practicing these skills can actually help rewire the brain…

What if your risk of Alzheimer's isn't predetermined by your genes—but influenced by the metabolic health of your brain? My guest, Dr. David Perlmutter, is a board-certified neurologist, six-time New York Times bestselling author, and one of the world's leading voices on brain health and neurodegenerative disease. His latest work reveals a fascinating shift in how we understand Alzheimer's and Parkinson's: the role of the brain's own immune cells. At the center of our conversation are microglia—specialized immune cells that can either protect your neurons or contribute to inflammation and neurodegeneration. Dr. Perlmutter explains why their function is closely connected to metabolic health, and how insulin resistance, obesity, poor sleep, gut dysfunction, chronic inflammation, and environmental toxins may influence the way your brain ages. We also challenge the idea that carrying APOE4 means Alzheimer's is inevitable and examine research showing how lifestyle interventions can influence cognitive…

What if the biggest mistake we're making with gut health is treating the microbiome like a list of bacteria instead of a living ecosystem? Your gut is home to trillions of microorganisms that influence inflammation, metabolism, immune function, hormones, brain health, and longevity. But modern life—from ultra-processed foods and antibiotics to pesticides, chronic stress, and inadequate fiber—may be systematically stripping away the microbial diversity we need to stay healthy. My guest, Kiran Krishnan, is a research microbiologist and microbiome expert who has spent nearly two decades studying these complex microbial ecosystems. He co-founded Microbiome Labs and has helped develop microbiome testing and clinically studied probiotics. Kiran introduced me to the concept of the holobiome: the idea that we aren't simply human cells and human DNA, but walking ecosystems containing millions of microbial genes that perform essential functions throughout the body. We explore what's actually damaging that ecosystem,…

What if one of the most important markers for your heart, brain, and longevity is something most people have never measured? AND roughly 90% of Americans aren't in the optimal range for? In this episode, I sit down with Dr. William Harris, one of the world's leading experts on Omega-3 fatty acids and the co-inventor of the Omega-3 Index, a test he helped develop more than 20 years ago. Dr. Harris has spent decades researching how omega-3s influence cardiovascular health, inflammation, cognitive health, chronic disease, and longevity. And his message is surprisingly simple: you can't know whether you're getting enough omega-3 just by looking at your diet or supplement routine. You have to measure it. We break down what omega-3s actually do inside your cells, why Dr. Harris believes an Omega-3 Index of 8–12% is the target, and why measuring EPA and DHA in red blood cell membranes gives you a more stable picture of your status than plasma testing. We also tackle some of the biggest controversies in nutrition…

What if aging isn't something you simply accept - but something you can measure, predict, and even reverse? Most of us are told our lab work is "normal," yet chronic disease often develops silently for years before symptoms appear. Dr. Florence Comite, one of the world's leading pioneers in precision medicine, is explaining why conventional medicine often misses the earliest signs of diesease- and how personalized data can completely change your health trajectory. Drawing from more than three decades of experience at Yale, the National Institutes of Health, and her own precision medicine practice, Dr. Comite shares how treating every patient as an "N-of-1" allows her to identify hidden risks years before they become heart disease, diabetes, osteoporosis, dementia, or hormonal decline. Together, they explore the biomarkers that matter most, the surprising role of insulin resistance in nearly every chronic illness, and why your genes are far less predictive than the choices you make every day. If you've ever…

We're living in a culture that celebrates being busy. More coffee. More hours. More hustle. But what if those things are actually making you less productive? The truth is, many high performers are stuck in a cycle of chasing energy instead of creating it. We rely on caffeine to wake up, push through stress, and squeeze more into each day - only to end up burned out, distracted, and wondering why success still feels exhausting. My guest James Beshara, is an entrepreneur, angel investor, and founder of multiple Magic Mind, one of the fastest-growing mental performance brands. After experiencing burnout firsthand, he set out to rething what sustainable productivity really looks like. Together, we explore why optimizing your energy matters more than optimizing your schedule, the hidden costs of caffeine and stimulant dependence, and how adaptogens, functional mushrooms, intentional routines, and timeless philosophy can help you perform at your highest level - without sacrficing your health. In this episode, we…

Hashimotos isn't just a thyroid disease-it may actually begin in the gut. If you've been told your thyroid labs are "normal" but you still struggle with fatigue, bloating, constipation, IBS, or autoimmune symptoms, this episode could change the way you think about your health. I sit down with Dr. Izabella Wentz, PharmD-better known as the Thyroid Pharmacist and one of the world's leading experts on Hashimoto's disease - to uncover the powerful connection between gut health, autoimmune disease, and thyroid function. Dr. Wentz explains why IBS is often not a true diagnosis, but a collection of symptoms with more than 30 possible root causes. Together, we explore why conventional medicine frequently misses these underlying issues and how identifying the real drivers - from intestinal permeability and SIBO to food sensitivities, medications, infections, and even heavy metal exposure - can help people finally find lasting relief. Whether you're living with Hashimoto's, IBS, or another autoimmune condition, this…

A leader's unresolved pain rarely stays contained within that leader. It can show up as control, aggression, emotional distance, relentless pressure, or a workplace where people are treated as resources rather than human beings. The organization may still perform, but the cost is often carried by employees, families, customers, and the leader's own health. In this episode of Extend, I sit down with Raj Sisodia to examine the relationship between personal healing and conscious leadership. We discuss why a company's culture often reflects the inner state of the people guiding it, how purpose changes the way work affects people, and why leadership built around fear, ego, or extraction eventually creates suffering. Raj Sisodia is a co-founder of the Conscious Capitalism movement, a business professor, speaker, and author of numerous books on purpose-driven organizations and leadership. His work has challenged the idea that companies must choose between financial performance and human well-being, while his…

I have operated on patients whose bodies had been sending them warning signals for years before a crisis ever put them in front of me. Stress alone causes or worsens more than 80 percent of the illness I see, and most of it traces back to one skill almost nobody was ever taught: how to actually listen to their own body. We dive deeper into this in the Extend Podcast with Dr. Neha Sangwan. We also chat about the five questions she asks every patient before sending them home, why your boss has more influence on your health than your doctor does, and the five levels of connection that determine whether a relationship heals you or drains you. Dr. Neha Sangwan is an internal medicine physician and former hospitalist who also trained as a mechanical and biomedical engineer. She is the founder and CEO of Intuitive Intelligence, where she works as an executive health and performance coach for corporate leaders and their teams. She is the author of TalkRx: Five Steps to Honest Conversations that Create Connection,…

Millions of people wear a CPAP machine every night, the standard breathing device prescribed for sleep apnea. They trust the number on the screen to tell them their sleep apnea is under control. I've had patients tell me they stopped using theirs because it felt pointless, and it turns out that feeling was often correct. We dive deeper into this in this episode of Extend with Dr. Sahil Chopra and Sagar Chopra, co-founders of Empower Sleep. We also chat about why palate shape and mouth breathing are driving more sleep apnea in kids, how GLP-1 medications are changing the CPAP conversation, and the truth about lip taping. Dr. Sahil Chopra is a pulmonary, critical care, and sleep medicine physician trained at UCLA and Loma Linda, with fellowship training in sleep medicine at Harvard. He is co-founder of Empower Sleep, a longitudinal home sleep testing platform used by physicians and patients nationwide. Sagar Chopra holds an MBA from the Wharton School, previously worked on product growth at Uber, and…

For most people, an ADHD diagnosis, an anxiety diagnosis, or a depression diagnosis is made entirely from a symptom checklist. No one looks at the brain producing those symptoms. In this episode, I sit down with Rachel and Angie, co-founders of BrainCode Centers, to talk about quantitative EEG brain mapping and neurofeedback, and why measuring the brain's actual electrical activity changes the picture so often. We look at why the majority of people carrying an ADHD diagnosis do not show the neurological pattern for it, what depression and anxiety actually look like on a brain scan, and how reward-based neurofeedback training retrains those patterns without medication. Rachel and Angie are licensed professional counselors and board certified in neurofeedback. Over seventeen years, they have mapped and trained roughly 25,000 brains, built in-person clinics across Denver, Boulder, Tulsa, and Dallas, and developed a remote kit that lets anyone get a brain map and begin neurofeedback training from home. What's…

A lot of people do not need to be convinced that the stairs are better than the escalator, walking is better than sitting all day, and reaching for the phone every quiet second is probably not helping their focus. The harder question is why the easier option still wins so often, even when someone cares about their health. This episode starts there, with the strange gap between what we know is good for us and what modern life quietly trains us to choose. In this episode of Extend, I sat down with Michael Easter to look at the hidden cost of a life designed around ease. The conversation asks what happens when discomfort, movement, boredom, load, scarcity, and friction are removed from daily life, and why putting some of those inputs back may change the way we think about resilience, behavior, and long-term health. Michael Easter is the author of The Comfort Crisis and Scarcity Brain, and the creator of the Two Percent newsletter and podcast. His work sits at the intersection of science, human behavior,…

For many women, the hormone conversation starts only when something becomes hard to ignore. Painful periods. Irregular cycles. Acne. Hair loss. Fertility struggles. Perimenopause symptoms. Too often, the answer is a quick fix for the symptom in front of them, without anyone asking what the body was trying to signal years earlier. In this episode, I sit down with Dr. Taz Bhatia MD to talk about why women's hormone health needs to be understood across the entire lifespan, not as separate problems that show up during adolescence, fertility, perimenopause, or menopause. We look at why symptoms like bad periods, PMOS, fatigue, mood changes, inflammation, weight gain, and hormone shifts should be connected back to the gut, metabolism, stress, nutrient status, inflammation, and emotional health. Dr. Taz Bhatia MD, brings a rare mix of conventional medical training and integrative medicine experience to this conversation. She began her career in emergency medicine, then expanded her work through holistic medicine,…

When labs look normal, it is easy to assume the body is fine or that the biggest risks have been ruled out. Dr. John Kim's story challenges that belief. At 33, after a normal lipid panel and without the classic heart attack picture, he ended up with an 85% blockage in his LAD. That experience forced him to ask what standard markers were missing. The answer led him into the deeper cellular stressors that can keep the body in defense mode: mold, mycotoxins, chronic infections, biofilms, heavy metals, emotional trauma, gut dysfunction, damaged cell membranes, and mitochondrial stress. In this episode of Extend, I sit down with Dr. Kim to talk about how these stressors can push the mitochondria away from energy production and into the cell danger response, where the body is still trying to protect itself but starts paying the price through brain fog, fatigue, inflammation, hormone disruption, gut issues, and hypersensitivity. Dr. John Kim is a functional pharmacist whose work focuses on mold toxicity,…

Most people assume that once they leave a mold-exposed building, their body should recover. But I see this all the time in my clinic, the mold exposure ends, and the symptoms don't. In this episode of Extend, I sit down with Dr. Scott McMahon, medical director at MoldCo, to ask why removing the source doesn't always mean removing the illness. We get into a switch inside the immune system, one that determines whether the body can actually call off an inflammatory response once a threat is gone, and what happens when that switch stops working. Understanding it changes how a long list of unexplained, lingering symptoms starts to make sense. Dr. Scott McMahon spent eighteen years as a pediatrician before a case involving a group of sick high school students redirected the entire focus of his career. He went on to study under Dr. Richie Shoemaker, the physician who first identified Chronic Inflammatory Response Syndrome (CIRS), and has spent years treating patients, publishing research on the condition's…

If you care about longevity, you have probably seen the same pattern over and over again. A new peptide, supplement, biological age test, off-label drug, or protocol starts gaining attention, and suddenly it sounds like the missing piece everyone should be using. The hard part is not wanting to be proactive. The hard part is knowing which claims have real evidence behind them, which ones are still early signals, and which ones may carry risks no one is measuring carefully enough. In this episode, I sit down with Dr. Matt Kaeberlein to talk about how to think about longevity when the answer is rarely a simple yes or no. This conversation helps separate excitement from certainty, and shows why the real question is not only whether something might work, but whether the evidence, safety data, product quality, and risk-reward equation are strong enough to act on. Dr. Matt Kaeberlein is a scientist in the biology of aging and one of the most respected voices bringing scientific discipline to the longevity…

A lot of women are taught to think about hormones only when something becomes impossible to ignore. Painful periods. Birth control decisions. Fertility anxiety. Postpartum changes. Perimenopause symptoms. Menopause. But what if those are not separate conversations? What if the body has been giving clues for years before the symptoms become loud enough to finally get attention? In this episode, I sit down with Dr. Jila Senemar to look at women's hormone health through a much wider lens. We talk about why the ovary should not be seen only as a reproductive organ, why the hormone conversation needs to start before menopause, and what women may be missing when birth control, AMH, perimenopause, and hormone replacement are treated like separate decisions instead of one connected health story. Dr. Jila Senemar is an OB-GYN and women's health physician who has spent years caring for women through cycle symptoms, contraception decisions, fertility questions, perimenopause, menopause, and hormone therapy. Her work…

When a couple is trying to get pregnant and it is not happening, the conversation can become very intense very quickly. Suddenly, you are hearing about IVF, egg freezing, AMH, sperm count, hormones, age, cost, and timing. But before the conversation jumps straight to the next procedure or the next number to panic over, there may be a deeper question worth asking: What is fertility trying to tell us about the health of the mother, the father, and the future child? In this episode of Extend, I sit down with Dr. Labib Ghulmiyyah to talk about fertility and pregnancy through a much bigger lens. This conversation looks at infertility not as a failure, but as information. It helps explain why fertility struggles, sperm health, ovarian reserve, placental function, and pregnancy complications can all give clues about metabolic health, inflammation, cardiovascular health, hormones, sleep, stress, toxins, and long-term risk. Dr. Labib Ghulmiyyah is an OB-GYN and residency director at Broward Health who brings together…

Your body is constantly repairing, renewing, and rebuilding itself. Hundreds of millions of cells are replaced every few months, which sounds incredible until you ask the question most people skip: if the body is designed to heal, why do so many people still feel tired, foggy, inflamed, slow to recover, or like something is off even when they are doing so many of the "right" things? In this episode of Extend, I sit down with Justin Roethlingshoefer to bring that question back to the cell. Justin explains why healing is not just about what your body is trying to do, but the environment your cells are trying to do it in. If that environment is missing oxygen, overloaded with toxins, or depleted of nutrients, your body may be creating new cells without giving them the conditions they need to thrive. Justin Roethlingshoefer is the creator of OWN IT, a coaching platform and app built to help people take ownership of their health through HRV, VO2 max, sleep quality, cellular testing, personalized rhythms, and…

A lot of people are trying to do the right things. They are learning more, tracking their health, working on their stress, trying to be more present, and using the tools they have been told should help. But if the advice is available, the science is clearer than ever, and the tools are right in front of us, why do so many people still feel overwhelmed, burned out, disconnected, or unable to make those changes stick? In this episode of Extend, I sit down with Dr. Dave Rabin to talk about one of the biggest missing pieces in how we understand stress, healing, and what it actually takes to feel better in the modern world. We get into the questions so many people are quietly carrying: why being human feels harder than it should, why knowing what to do does not always mean your body can follow through, and what it may take to finally turn information into something your body can actually use. What's Discussed: (04:28) What Dr. Rabin realized Western medicine left out of his training. (07:01) Why trauma may be…

When your body feels wired, depleted, foggy, inflamed, or slow to recover, the usual instinct is to add something else. Another supplement. Another device. Another protocol. But the body does not respond to tools just because they are available. It responds to the signals it is receiving, and if those signals keep telling the body it is under threat, it will keep prioritizing survival over repair. In this episode of Extend with Dr. Shah, I sit down with Brian Le Gette, the creator of the Ammortal Chamber to talk about it after personally experiencing it and feeling the difference in my body for days afterward. Brian breaks down the technology behind that experience, why it felt so different, and how the chamber works with the body, mind, nervous system, and cells at the same time. We also get into why many of the same principles behind the chamber are not as far out of reach as people may think, and what you can start applying at home if you want to give your body better recovery signals. Brian Le Gette is…

Modern life tells us that more freedom should make us happier. More independence, more control, more convenience, more space to do life on our own terms. But what if the thing we keep chasing is also the thing quietly pulling us away from what our brain and body still need most: connection. In this episode of Extend, I sit down with Dr. William Von Hippel to talk about the conflict between two of our most basic human motives: connection and autonomy. We get into why connection used to be built into survival, why autonomy used to be rare, and why modern life has flipped that balance in a way that can leave people feeling lonely, empty, or disconnected even when they seem to "have everything." We also talk about why loneliness is not just an emotion, how it can affect the immune system, and how to build connection back into everyday routines without overcomplicating your life. Dr. William Von Hippel is an evolutionary psychologist, researcher at WHOOP, and the author of The Social Paradox and The Social Leap.…

Sleep debt is usually treated like a personal problem. You sleep less, feel tired, and try to catch up later. But Dr. Kristen Holmes explains why that belief is too small. When your body is missing the sleep it actually needs, it can affect your mental control, emotional regulation, leadership, and even how safe the people around you feel in your presence. In this episode of Extend, I sit down with Dr. Kristen Holmes to talk about recovery in a way that goes far beyond "just sleep more." We get into why sleep debt is the gap between what your body needs and what you actually got, why a good night of sleep starts the moment you wake up, and how morning light, sleep consistency, bright days, dark nights, meal timing, stress reframing, breathwork, and outdoor time all shape how well your body restores. Dr. Kristen Holmes is a human performance and recovery expert at WHOOP and the author of Aligned: The Data-driven Guide to Performance, Recovery, and Human Potential. Her work connects physiology and psychology…

Hormone symptoms are usually treated like a problem with levels. Progesterone is low. Estrogen is shifting. Cortisol is high. Testosterone is dropping. So the conversation often becomes about what to replace, what to supplement, or what protocol to follow. But there is a deeper layer that rarely gets brought into the room: the body is also responding to the stress, grief, resentment, trauma, people-pleasing, perfectionism, and survival patterns it has been carrying for years. In this episode of Extend, I sit down with Dr. Sonya Jensen to talk about the connection between mental health and hormonal health. We get into why anxiety can suddenly feel louder in perimenopause, why rage may be years of suppressed resentment asking to be expressed, why grief is not always about losing a person, and why some women still feel stuck even after doing the nutrition, supplements, herbs, or hormone therapy. The aha moment here is that hormones may not be creating a brand-new problem. They may be revealing what the body has…

You can do the supplements, the IVs, the sauna, the clean eating, and the wellness routine, but if your body is still being exposed to toxins every day, you may be cleaning up a mess while the tap is still running. That is what makes toxic load so frustrating. It can hide in your water, food, air, dental work, travel habits, mold exposure, heavy metals, PFAS, pesticides, microplastics, and even the products you use daily, while standard labs never show the full picture. In this episode of Extend, I sit down with Natalie Lefevre to talk about how to outsmart toxins by testing first, removing what is actually there, and choosing the right protocol instead of guessing your way through another cleanse. We get into the rare labs and diagnostics that can reveal hidden toxic load, why not all toxin tests or blood cleanse methods work the same way, how biological dentistry can uncover inflammation that regular dental X-rays miss, and why detox has to become a lifestyle if you want your body to actually heal instead…

When we talk about health, longevity, and performance, the conversation often starts with the body. We look at biomarkers, sleep, nutrition, exercise, recovery, and protocols, hoping that if we get enough of the physical pieces right, we will finally feel better, stronger, and more alive. Yet there is another layer that can quietly shape everything from the way we handle stress to the way we heal, lead, love, perform, and experience our own potential. In this episode of Extend, I sit down with Peter Crone to explore why true vitality is not only about what is happening in the body, but also about the subconscious stories shaping the mind. We get into the patterns of inadequacy, insecurity, and scarcity, how they can keep the nervous system in survival, why health is not simply the absence of disease, and how the narratives we live inside can affect our physiology, relationships, performance, and ability to feel free. This conversation matters because it challenges the idea that physical optimization alone is…

Have you entered midlife and started gaining weight, feeling exhausted, waking up foggy, losing motivation, or noticing your mood shift while your labs keep coming back "normal"? For a lot of women over 40, that answer does not bring relief because they still feel off, and this episode explains why thyropause, the midlife decline in thyroid function, is so often missed, dismissed, or mistaken for aging, burnout, depression, or menopause. We dive deeper into this in the Extend Podcast with Dr. Darshan Shah with Dr. Amie Hornaman. We break down why TSH alone is not enough, how thyropause overlaps with perimenopause, menopause, and andropause, and why the real fix starts with a full thyroid panel, proper T4-to-T3 conversion, and a personalized plan built around optimal function instead of "normal" ranges. Dr. Amie Hornaman, also known as The Thyroid Fixer, is the founder of the Advanced Thyroid and Hormone Clinic and host of The Thyroid Fixer Podcast. After being misdiagnosed six times herself, she built an…

If you think your skincare routine is protecting your skin, this conversation may make you look at your bathroom shelf differently. You've been taught to treat your skin like something cosmetic, something you maintain for how it looks. But your skin is your largest organ, it has its own biological age, and if you are not supporting it properly, it can become a constant source of inflammation and damage that goes far beyond appearance. We dive deeper into this in Extend with Carolina Reis de Oliveira, PhD. We also break down why most skincare products are not built to target the biology of aging, how senescent cells drive visible and invisible skin aging, and how OS-01, discovered through machine learning, is designed to slow the spread of these dysfunctional cells so you can actually support your skin as part of your longevity strategy. Carolina Reis de Oliveira, PhD, is a stem cell biologist, tissue engineer, and co-founder and CEO of OneSkin. She has spent over a decade researching cellular aging, building…

The gut and hormones have always been treated as two completely separate conversations in medicine, and that disconnect is quietly behind some of the most frustrating symptoms women experience in midlife. From bloating and brain fog to autoimmune conditions and weight that will not move, the answers have been there all along, hiding in a connection nobody thought to make. We dive deeper into this in the Extend Podcast with Cynthia Thurlow. We also talk about why perimenopause is the ultimate litmus test of how well you have been living your life, why every woman deserves a conversation about hormone replacement therapy regardless of her age, and why the gut microbiome may be the missing link behind why so many women start HRT and still do not feel better. Cynthia Thurlow is a nurse practitioner, internationally recognized speaker, and host of the Everyday Wellness podcast, with over 25 years of experience in health and wellness specializing in perimenopause, menopause, and intermittent fasting. Her second…

A lot of us are doing everything we can to stay healthy, taking supplements, wearing trackers, getting our labs done, and still ending up sick. And if you are like most people, you probably thought that was on you, that you were not disciplined enough, not consistent enough, or simply not doing the right things, but that is not the case. The system we have been relying on was never designed to keep us well in the first place, and expecting the Western medical system to manage your long term health is like expecting a fire department to landscape your garden. We dive deeper into this in the Extend with Steve Martocci, Pranitha Patil, and John Sullivan. We also chat about why 30% of people have dangerously high blood pressure and have no idea, why four out of six top selling creatine products on Amazon contain zero creatine, and why doctors receive zero training on supplements in medical school yet are expected to advise patients on them every single day. Steve Martocci is the founder of SuppCo, a platform…

Most high performing executives will spend thousands optimizing their glucose levels, their sleep, and their body composition without ever stopping to ask why none of it makes them feel any better. The answer almost never lives in their labs and it almost never lives in their training program. It lives in the identity they built their entire career on top of, and the silent narrative driving every decision they make, that tells them their worth is only as good as their last result. In this episode of Extend, I sat down with Steve Chua to explore the real root cause of executive burnout and why fixing your physiology without addressing your identity is like putting the right fuel into the wrong engine. Walk away from this conversation with a completely different understanding of what is actually driving your performance, your exhaustion, and what it is going to take to finally lead from a place of genuine strength instead of fear. Steve Chua is an executive life and leadership coach with over 30 years of…

A lot of people are walking around exhausted, foggy, moody, and struggling with their cardiovascular health blaming stress, diet, age, and everything in between, never once considering that the real culprit might be happening in the eight hours they are not even awake for. And in children, what is being labeled as ADHD and treated with medication could in many cases simply be an undiagnosed sleep disorder that nobody thought to look for. In this episode of Extend, I sit down with Dr. Meredith Broderick for a conversation that is going to completely reframe the way you think about sleep and what ignoring it is actually costing your health, your brain, and your children. Walk away finally understanding what is driving your symptoms, why the medications most people reach for are quietly making things worse, and what actually works to fix your sleep for good. My guest today is Dr. Meredith Broderick, a triple board-certified sleep neurologist and one of only four practitioners in the world to hold certifications…

Fatigue, brain fog, weight gain, hair loss, low libido, high cholesterol, and a doctor who keeps telling you your labs look normal. For the millions of people walking around with an undetected or poorly managed thyroid condition, this is not just a frustrating experience but a dangerous one. Because what their doctor never told them is that the most important thyroid marker, the one that actually powers every cell in the body, is only being checked 4% of the time, which means the test they are relying on to rule out a thyroid problem is missing it almost every single time. In this episode of Extend, I sat down with McCall McPherson for a conversation that is going to completely change the way you think about your thyroid, your labs, and why the treatment that 89% of thyroid patients are on may be the very reason they are still suffering. If you have ever been dismissed by your doctor despite feeling terrible, this episode is going to give you the language, the labs, and the clarity to finally get the answers…

Biological aging is no longer just a concept tied to time. It is something we can now measure, track, and influence through data, lifestyle, and targeted interventions that directly impact how our cells function and age. In this episode of Extend, we sit down with Dr. Kara Fitzgerald, functional medicine leader, researcher, and author, to unpack how diet and lifestyle can directly influence epigenetics and biological age. We break down the difference between chronological and biological aging, how epigenetic clocks work across organs and systems, and why aging may be driven by both environmental exposures and deeper programmed mechanisms. We also explore how polyphenols, nutrient-dense diets, and emerging interventions like Yamanaka mimetics may begin to shift the trajectory of aging at the cellular level and open new pathways for extending healthspan and peak performance. Dr. Kara Fitzgerald is a functional medicine physician, researcher, and author of Younger You, known for her pioneering clinical studies…

Mitochondrial decline is one of the most overlooked drivers of aging, impacting energy, muscle function, cognitive performance, and immune resilience long before symptoms become obvious. Many of the changes we associate with aging may actually stem from a loss of cellular efficiency and the body's ability to renew itself. In this episode of Extend, I sit down with Dr. Anurag Singh, Chief Medical Officer at Timeline, to unpack the science behind urolithin A and how mitochondrial health shapes longevity. We break down how the gut microbiome influences cellular function, why mitophagy declines with age, and what clinical research shows about improving muscle strength, recovery, metabolic health, and immune function. We also explore how targeted supplementation and lifestyle strategies can help restore mitochondrial quality and support long-term performance and resilience. Dr. Anurag Singh is a physician-scientist with an M.D. in internal medicine and a Ph.D. in immunology, currently serving as Chief Medical…

Modern life is quietly accelerating biological aging, from posture and movement patterns to sleep disruption, chronic stress, and constant digital stimulation. Many of the symptoms people experience daily, like pain, fatigue, brain fog, and disconnection, may reflect a deeper misalignment with how the human body was designed to function. In this episode of Extend, I sit down with Dr. Kavin Mistry, board-certified neuroradiologist and author of Primal Health Design, to unpack how modern lifestyles are reshaping our biology and accelerating aging. We break down how posture, movement, circadian rhythm, nutrition, and environment influence brain and spine health, and why reconnecting with our primal design is essential for long-term resilience and performance. We also explore how daily practices like morning sunlight, grounding, deep work, and intentional routines can help restore alignment with your biology and create more energy, clarity, and longevity in a fast-moving, AI-driven world. Dr. Kavin Mistry is a…

Allergies, chronic inflammation, and constant exposure to environmental toxins are reshaping how our immune system functions, often in ways that go unnoticed until symptoms appear. What many people see as isolated issues like gut problems, skin reactions, or fatigue may actually reflect a deeper immune imbalance. In this episode of Extend, I sit down with Dr. Tania Elliott, double board-certified physician in internal medicine and allergy and immunology, to unpack how the immune system operates across infection defense, hypersensitivity, and autoimmunity, and how modern exposures like microplastics, synthetic chemicals, and ultra-processed products are disrupting this balance. We break down how chronic inflammation begins, why gut health is central to immune regulation, and how everyday products in your home may be silently driving immune dysfunction. We also explore how simple, high-impact changes like reducing toxin exposure, improving indoor air quality, and retraining the immune system through targeted…