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PODCAST

The Ty Beal Show

Are you overwhelmed by conflicting nutrition advice? Tired of trying to separate health facts from fleeting fads? I’m Ty Beal, PhD, a nutrition scientist exploring what we eat and how it truly impacts our wellbeing.On The Ty Beal Show, we cut through the noise. Each week, I’ll be talking with leading experts in nutrition, public health, and food systems—bringing you the latest science in simple, practical terms. We’ll explore why there’s no one perfect diet, how to nourish your body, and ways to

health & fitness nutrition

All Episodes

81:54

The Food Combo That Makes Us Overeat — And It's In...

The Ty Beal Show ·

2026/04/07

In this episode, Professor John Speakman—biologist at the University of Aberdeen and the Chinese Academy of Sciences, and one of the world's foremost experts on energy balance—joins the show to reveal what a 1,200-mouse feeding study and 30,000 human data points have uncovered about why we really gain weight. The answer isn't fat alone and it isn't carbs alone—it's a specific combination of the two, around 40–50% fat and 20–30% carbohydrate by calories, that sits at the peak of a "mountain" of

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62:07

Your Gut Microbiome Shapes Your Health More Than Your...

The Ty Beal Show ·

2026/03/31

In this episode, Professor Tim Spector—epidemiologist at King's College London, co-founder of ZOE, and one of the world's most cited scientists—joins the show to share what 15 years of pioneering microbiome research has revealed about human health. We start with the finding that upended his career: identical twins, despite sharing 100% of their DNA and a childhood home, share only about 25% of their gut microbe species—meaning 75% of your microbiome is entirely unique to you. From there, we explore

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53:25

Your Exercise Isn't Burning Extra Calories — Here's...

The Ty Beal Show ·

2026/03/24

In this episode, evolutionary anthropologist Dr. Herman Pontzer—one of the world's leading researchers on human metabolism and energy expenditure at Duke University—joins the show to share what decades of fieldwork with the Hadza hunter-gatherers of Tanzania have revealed about how our bodies really work. We explore what hunter-gatherers actually eat (spoiler: it's not the all-meat paleo diet you've been sold), why the healthiest hearts ever measured belong to a community whose staple foods are

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65:31

The Foods That Protect Your Brain from Dementia | Max...

The Ty Beal Show ·

2026/03/17

In this episode, NYT bestselling author and health journalist Max Lugavere joins the show in person in Phoenix for a wide-ranging conversation on brain health, dementia prevention, and the foods that protect your mind. After his mother was diagnosed with a neurodegenerative condition in her fifties, Max left his journalism career to investigate the science of brain health—a mission that produced three bestselling books, the hit podcast The Genius Life, and the acclaimed documentary Little Empty

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55:29

Mitochondria, Bone Health, and Why Peak Performance...

The Ty Beal Show ·

2026/03/10

In this episode, nutrition scientist Dr. Chris Masterjohn—one of the original voices behind the vitamins A, D, and K balance framework—joins the show for a wide-ranging conversation on bone health, mitochondrial function, and rethinking longevity. We start with a deep dive into why vitamins A, D, and K need to work together as equal partners, how the internet's growing hostility toward vitamin A has reached what Dr. Masterjohn calls a "blow-off top," and why most people probably aren't converting

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66:05

Why Nutrition Science Is Stuck — And How to Fix It |...

The Ty Beal Show ·

2026/03/03

In this episode, Harvard professor and obesity researcher Dr. David Ludwig joins the show to discuss his new paper "Overcoming Impasse in Nutrition Science," published today in Cell Metabolism (https://doi.org/10.1016/j.cmet.2026.01.013). Dr. Ludwig—author of the New York Times bestseller Always Hungry and one of the leading proponents of the carbohydrate-insulin model of obesity—uses the framework of science philosopher Thomas Kuhn to explain why paradigm clash in nutrition has stagnated into

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42:03

Why Your Doctor Is Missing the #1 Heart Disease Risk...

The Ty Beal Show ·

2026/02/24

In this episode, preventive cardiologist Dr. Bret Scher—medical director of Metabolic Mind and the Coalition for Metabolic Health—joins the show for a wide-ranging conversation on why mainstream cardiology has been getting heart disease prevention wrong. After years of practicing conventional medicine, Dr. Scher had his worldview upended when he discovered the power of low-carb and ketogenic diets to reverse the metabolic dysfunction driving most cardiovascular disease. We explore why LDL alone

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109:21

The Hidden Blood Test That Could Save Your Life | Dr....

The Ty Beal Show ·

2026/02/17

In this episode, nutrition scientist Dr. Mario Kratz—creator of the popular YouTube channel Nourished by Science—joins the show for a deep dive into metabolic health and what you can actually do to prevent chronic disease. After 25 years in academic research conducting rigorous randomized controlled trials, Dr. Kratz left academia to bring unbiased, evidence-based nutrition science directly to the public—free of supplements, sponsors, and dietary tribes. We explore why your doctor's standard blood

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45:27

Food Fix Uncensored: The Chronic Disease Crisis & How...

The Ty Beal Show ·

2026/02/10

In this episode, Dr. Mark Hyman joins me to unpack his new book Food Fix Uncensored and the revolution in American food policy—chronic disease, ultra‑processed food, SNAP reform, new dietary guidelines, and more. With over three decades of experience in functional medicine and a track record of advising policymakers at the highest levels, Dr. Hyman offers an insider's perspective on what he calls "the most exciting moment" in his career—a time when the ideas he once thought would take generations to

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33:34

Ultra-Processed Foods, Sugar & What the Evidence...

The Ty Beal Show ·

2026/02/03

In this episode, Dr. Michael Goran—one of the leading scientists behind the 2025 Dietary Guidelines for Americans—joins the show to reveal what the evidence says about highly processed foods, refined grains, and added sugars. As the researcher who led three critical umbrella reviews that shaped these landmark guidelines, Dr. Goran walks us through the methodology behind the recommendations and shares findings that may surprise you: a 10% reduction in highly processed food intake can lower diabetes

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56:41

The Politics of Food Guidelines and the Real Food...

The Ty Beal Show ·

2026/01/27

In this episode, legendary food policy expert Dr. Marion Nestle joins the show to discuss her new book "What to Eat Now" and share her unfiltered take on the 2025 Dietary Guidelines for Americans. At 89 years old, Dr. Nestle brings over five decades of experience to the conversation, including her role as editor of the 1988 Surgeon General's Report on Nutrition and Health and as a member of the 1995 Dietary Guidelines Advisory Committee. We explore how supermarkets are designed to maximize spending

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67:06

Evolutionary Psychiatry & Brain Health | Emily Deans, MD

The Ty Beal Show ·

2026/01/20

In this episode, board-certified psychiatrist and "Evolutionary Psychiatry" creator Dr. Emily Deans joins the show to explore the profound connection between what we eat and how we think and feel. We discuss the limitations of a purely pharmaceutical approach to mental health and examine how an evolutionary framework—looking at the mismatch between our hunter-gatherer biology and our modern industrial environment—can offer a more complete picture of brain health. Dr. Deans breaks down the science

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65:57

Unpacking the New Dietary Guidelines: Real Food,...

The Ty Beal Show ·

2026/01/15

In this special episode, I share a conversation hosted by Dr. Mario Kratz, former professor at the Fred Hutch Cancer Center and founder of Nourished by Science, to unpack the recently released Dietary Guidelines for Americans. We discuss the focus on "real food" that prioritizes minimally processed nutrient-dense options, examining the move to center diets around quality protein sources and fiber-rich plants while tackling the chronic disease crisis linked to diet and lifestyle.We examine the bold

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53:56

Livestock, Climate, and the Myth of “Natural”...

The Ty Beal Show ·

2026/01/13

In this episode, rangeland ecologist Dr. Pablo Manzano of the Basque Centre for Climate Change joins the show to challenge the dominant narrative that livestock are inherently harmful to the climate and the planet. We examine the two most common critiques of animal agriculture—greenhouse gas emissions and land use—and unpack why these arguments often ignore how ecosystems actually function. Dr. Manzano introduces the concept of baseline emissions, explaining how grazing livestock largely replace the

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71:46

The Case for Ethical Omnivorism | Frédéric Leroy, PhD

The Ty Beal Show ·

2025/12/09

In this episode, Frédéric Leroy, PhD, a professor of food science and biotechnology at the Free University of Brussels, joins the show to dismantle the polarized debate surrounding animal-source foods. We explore the nutritional risks associated with restrictive vegan diets, particularly for vulnerable groups like infants and women of reproductive age, while examining the evolutionary and biological role of meat in the human diet. Dr. Leroy challenges the current push toward exclusively plant-based

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41:02

Evidence, Uncertainty, and Nutrition Science | Gordon...

The Ty Beal Show ·

2025/12/02

What do we know about health, nutrition, and medicine — and how confident should we be? In this episode, Dr. Gordon Guyatt, the clinician-scientist who coined the term evidence-based medicine and co-created the GRADE framework, breaks down why so much health and nutrition guidance rests on weak foundations. We dig into the hierarchy of evidence, why observational studies so often mislead us, and what went wrong with hormone replacement therapy and antioxidant vitamins. Dr. Guyatt also explains the

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102:57

Food Intelligence: Why Ultra-Processed Foods Make Us...

The Ty Beal Show ·

2025/11/25

Why do ultra-processed foods make us eat more — even when calories, sugar, fat, and protein are matched? In this episode, Dr. Kevin Hall, author of Food Intelligence and one of the most influential scientists in metabolism and obesity research, breaks down the mechanisms driving overeating — and shares brand-new findings from his latest NIH study.We dig into energy density, hyper-palatability, dopamine, food addiction, food policy, and how we can redesign the food system for real health impact —

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63:23

Unpacking Nova: The Origins and Future of...

The Ty Beal Show ·

2025/11/18

What is the definition of an ultra-processed food (UPF), and where did the concept originate? Why is the Nova classification system both a groundbreaking public health tool and a source of intense debate? And how can we use this framework to build healthier food systems around the world?In this episode of The Ty Beal Show, Dr. Carlos Monteiro, the Brazilian epidemiologist who coined the term "ultra-processed food" and developed the revolutionary Nova classification system, joins Ty for a timely

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86:04

Ultra-Processed People: Corporate Power and Public...

The Ty Beal Show ·

2025/11/11

What are ultra-processed foods (UPFs), and why is the concept so controversial? How does a diet high in these foods affect our bodies, brains, and hormones? And how can we build effective policies to improve public health without shaming individuals or fueling disordered eating?In this episode of The Ty Beal Show, Chris van Tulleken, MD, PhD, a professor at University College London, BBC broadcaster, and author of the bestseller Ultra Process People, joins Ty to discuss the science and politics of

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58:58

Bridging Research and Policy in Global Nutrition |...

The Ty Beal Show ·

2025/11/04

How do we turn cutting-edge nutrition research into policies that improve people's lives? In this episode of The Ty Beal Show, Purnima Menon, PhD, Senior Director of Food and Nutrition Policy at IFPRI, shares her journey from reading recipe books as a child to becoming a world leader in advancing global nutrition at the intersection of science and policy.Purnima explains why understanding people—their constraints, motivations, and contexts—is essential to creating meaningful change in food systems

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