What does the science say about plant-based diets, longevity, and cardiovascular health? In this episode of The Ty Beal Show, Dr. Gil Carvalho, research scientist and host of Nutrition Made Simple with over a million monthly viewers, cuts through the noise to reveal what the evidence shows.

Dr. Carvalho challenges common assumptions about plant-based eating, explaining why the term itself is misleading and how Mediterranean, pescatarian, and even well-planned omnivorous diets can be equally health-promoting. Drawing from Harvard's landmark healthy aging studies and genetic research, he reveals how optimized nutrition patterns can add 10-12 years to your lifespan—but warns against the dangerous mythology surrounding certain dietary extremes.

This deep-dive conversation explores the mechanics of cardiovascular disease, with Dr. Carvalho breaking down why ApoB—not LDL cholesterol—is the gold standard for assessing heart disease risk. He shares his personal experience with genetic risk factors including elevated Lp(a), explaining when imaging tests like coronary calcium scores become valuable and how to optimize lipid levels through diet, lifestyle, and targeted medications.

What you'll learn:

Dr. Carvalho also shares his personal experiments with statin medications, revealing how different drugs affected his insulin resistance and ApoB levels differently, and explains why promising new Lp(a)-lowering medications might revolutionize cardiovascular prevention within the next few years.

Whether you're navigating conflicting dietary advice, concerned about cardiovascular risk, or simply want to understand what nutritional science says about plant-based diets, this episode provides evidence-based clarity from one of the field's most trusted science communicators.

Find Dr. Gil Carvalho's work at Nutrition Made Simple on YouTube and follow him on X and Facebook.

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Can what you eat actually treat depression? In this episode of The Ty Beal Show, Dr. Ally Jaffee, MD, a psychiatry resident doctor and co-founder of NutriTank, reveals the science behind nutritional psychiatry and why your gut health might be the key to mental wellness.

Dr. Jaffee, winner of the 2024 Cura Mental Health Advocate of the Year Award, shares her deeply personal journey into psychiatry—from losing her grandfather to suicide at two weeks old to experiencing her own clinical depression during medical school. Her story illuminates the concept of the "wounded healer" in healthcare and how lived experience can enhance, rather than compromise, clinical practice.

Drawing from landmark research including the SMILES trial—the first randomized controlled trial to show dietary intervention could put depression into remission—Dr. Jaffee explains how the gut-brain axis creates a bidirectional pathway between our digestive system and mental health. She breaks down why people with inflammatory bowel disease have higher rates of mental illness, and how restoring gut microbiome balance can enhance both mood and medication effectiveness.

What you'll learn:

Dr. Jaffee also addresses the mental health crisis among young people, explaining how creative arts, nature therapy, and non-traditional interventions can succeed where conventional talk therapy fails. From spoken word poetry to surf therapy, she reveals innovative approaches that are helping disconnected youth find community and healing.

Whether you're struggling with mental health challenges, curious about the food-mood connection, or interested in how healthcare systems can evolve beyond the "pill for every ill" mentality, this episode offers hope and practical insights from a passionate advocate working to transform both medical education and patient care.

Find Dr. Ally Jaffee's work at NutriTank and follow her on LinkedIn and Instagram.

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Why do so many conventional treatments fail to solve chronic health problems? In this episode of The Ty Beal Show, Chris Kresser, MS, LAc, former functional medicine practitioner and New York Times bestselling author, reveals how a systems-based approach uncovers and addresses the true drivers of disease—leading to lasting results instead of temporary symptom relief.

Drawing on over 15 years of clinical practice, Chris explains the critical differences between functional, integrative, and conventional medicine, sharing remarkable stories of patients who reversed serious autoimmune conditions, avoided major surgery, and reclaimed their health. He breaks down how environmental triggers, gut health, nutrient deficiencies, and lifestyle factors interact to cause chronic illness—and how personalized nutrition and lab testing can uncover the hidden causes conventional ranges often miss.

What you'll learn:

Chris also shares his surprising take on vegan, carnivore, and omnivorous diets, explains how lab work can reveal dietary patterns, and tells the story of the "beer and pizza" recovery that transformed a patient's life. Whether you're facing unexplained symptoms, frustrated by conventional treatments, or simply curious about holistic approaches, this episode offers a masterclass in root cause medicine from one of the field's most experienced voices.

Find Chris Kresser's work at chriskresser.com and kresserinstitute.com. Connect with Chris on Instagram, X, and Facebook.

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Think ultra-processed foods are bad just because they're high in calories? It's not that simple. In this episode of The Ty Beal Show, nutritional biologist and food scientist Marit Kolby, MS, reveals the shocking mechanisms behind why your body treats a 200-calorie apple completely differently than 200 calories from an ultra-processed snack - and it goes far beyond overconsumption.

Marit, author of the popular Norwegian book "What and When Should We Eat?", explains how ultra-processed foods disrupt our gut homeostasis, hijack cellular communication, and create a cascade of inflammation that affects everything from nutrient absorption to mental health. Drawing from her background in food science, microbiology, and nutritional biology, she connects the dots between industrial food processing and widespread health problems.

What you'll learn:

Marit also reveals why allowing yourself to feel hungry between meals is essential for cellular repair, how ultra-processed foods override natural satiety signals through inflammation, and her surprisingly optimistic view on how easy it can be to transition back to whole foods. Whether you're struggling with mysterious health issues, concerned about your family's diet, or simply want to understand the science behind food processing, this episode offers eye-opening insights from one of the field's leading researchers.

Find Marit Kolby on Instagram, X, and LinkedIn.

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Why do billions of people suffer from malnutrition in a world that produces enough food to feed everyone? In this episode of The Ty Beal Show, Dr. Lawrence Haddad, World Food Prize winner and executive director of the Global Alliance for Improved Nutrition (GAIN), reveals the shocking truth about global malnutrition and what it would actually take to end it.

Dr. Haddad, who was appointed Companion of the Order of St. Michael and St. George by King Charles III for his services to international nutrition, explains why malnutrition isn't just about hunger - it's about justice, access, and inequality. From his early days studying agricultural economics to leading a global nutrition organization, he shares insights from decades of fighting one of humanity's most persistent challenges.

What you'll learn:

Dr. Haddad also discusses why nutrition remains an "orphan issue" without strong institutional champions, how the private sector brilliantly markets unhealthy foods while governments fail at promoting healthy ones, and his surprising optimism despite massive funding cuts. Whether you're concerned about global inequality, interested in international development, or want to understand why ending malnutrition is both achievable and essential, this episode offers a masterclass from one of the field's most respected leaders.

Find Dr. Lawrence Haddad's work at GAIN. Connect with him on LinkedIn.

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How do animals impact our environment, and what role should they play in sustainable food systems? In this episode of The Ty Beal Show, Dr. Anne Mottet, agro-economist and global lead for livestock at the International Fund for Agricultural Development (IFAD), explores the complex relationships between livestock and climate change, land use, biodiversity, and water resources.

Dr. Mottet, who oversees $1 billion in livestock investments and has over 20 years of experience in research and international development, explains why the environmental impact of livestock depends heavily on how and where animals are raised. She discusses why half the land used by livestock can't be converted to crops, how grazing animals can benefit ecosystems when properly managed, and why 1.4 billion people worldwide depend on livestock for their livelihoods.

What you'll learn:

Dr. Mottet also discusses the social and cultural importance of livestock, from providing savings accounts for people without bank access to enabling crop production through animal traction on half the world's farmland. Whether you're concerned about climate change, curious about sustainable agriculture, or trying to make informed food choices, this episode offers a science-based perspective on both the benefits and risks of livestock in our food systems.

Find Dr. Anne Mottet's work at IFAD. Connect with her on X and Instagram.

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What if the secret to sustainable weight maintenance isn't counting calories or following strict diets, but understanding which foods naturally make you feel full? In this episode of The Ty Beal Show, Dr. Andreas Eenfeldt, founder and CEO of Diet Doctor, shares his evolution from keto advocate to pioneer of "satiety per calorie" - a revolutionary approach to eating that works regardless of whether you're low-carb, plant-based, or somewhere in between.

Dr. Eenfeldt, who built the world's largest keto and low-carb website, reveals why he's moved beyond strict dietary rules to focus on foods that naturally control hunger. Drawing from hundreds of thousands of eating logs and rigorous scientific research, he explains how protein, energy density, fiber, and food processing combine to determine how much we eat.

What you'll learn:

Dr. Eenfeldt also shares his personal dietary evolution - how after 20 years of strict low-carb eating, he now enjoys greater flexibility while achieving better results. Whether you're keto-curious, struggling with food cravings, or simply want a more sustainable approach to healthy eating, this episode offers practical, science-based strategies that work in the real world.

Find Dr. Andreas Eenfeldt's work at Diet Doctor and try the Hava app for free.

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Ever wonder why it's so hard to resist that bag of chips or stop eating when you're full? In this inaugural episode of The Ty Beal Show, neuroscientist and author Dr. Stephan Guyenet reveals the fascinating science behind our eating behaviors and why our brains aren't built for today's food environment.

Dr. Guyenet, author of "The Hungry Brain," a Publishers Weekly Best Book of the Year, breaks down complex topics into clear, actionable insights. You'll discover why hunter-gatherers never struggled with obesity, how ultra-processed foods hijack our brain's reward systems, and why willpower alone isn't enough to overcome modern eating challenges.

What you'll learn:

Plus, Stephan shares his work at GiveWell, where he helps direct millions of dollars to save lives in the world's poorest countries, and discusses the critical importance of international health aid.

Whether you're struggling with your own eating habits, curious about the latest weight loss breakthroughs, or simply want to understand the science behind nutrition headlines, this episode offers evidence-based insights without the hype.

Find Dr. Stephan Guyenet on X. Buy his book The Hungry Brain. View popular nutrition book reviews at Red Pen Reviews.

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Tired of conflicting nutrition advice? Nutrition scientist Ty Beal, PhD cuts through the noise with credible, science-backed insights that are actually useful.

In this trailer, discover what makes The Ty Beal Show different: no diet fads, no fear-mongering—just practical guidance from leading experts in nutrition, public health, and food systems. Learn why there's no perfect diet for everyone and how to make informed choices about your health.

Each week, expect evidence-based conversations delivered in plain language, with facts over fear and understanding over judgment.

Ready to take charge of your health? Subscribe now for nutrition science you can trust.

New episodes weekly.