Healthy AF | Healthy After 50

A new seed oil study may look reassuring at first glance — but what did it actually measure? In this episode, Zane Griggs breaks down a 2025 review of clinical studies on seed oils and explains why short-term improvements in blood markers do not necessarily tell us what is happening inside the mitochondria. You'll learn why the real concern is not only what shows up in a blood draw, but what happe...

What happens when your body gets stuck burning fat and can't switch back to glucose? In Part 2, Zane breaks down metabolic inflexibility and explains why being locked into fat-dominant metabolism is not the same as being metabolically healthy. You'll learn how this pattern affects the muscle, heart, and liver — and how elevated fatty acids can impair glucose oxidation, disrupt insulin signaling, a...

What if the most efficient fuel for the human body isn't fat… but glucose? In this episode, Zane Griggs breaks down the actual biochemistry behind ATP production, mitochondrial efficiency, and why cardiologists actively try to shift failing hearts away from fat oxidation and back toward glucose oxidation. This conversation dives deep into the P/O ratio, oxygen efficiency, insulin resistance, heart...

In this episode, Zane sits down with registered dietitian and Type 1 diabetic Isaac Pohlman to challenge one of the biggest misconceptions in modern health: that carbs are the problem. Isaac shares his powerful personal journey—from a high-level athlete dealing with chronic fatigue, hormonal issues, and gut dysfunction to being diagnosed with Type 1 diabetes in grad school. What followed wasn't ju...

Most people believe your metabolism automatically slows down after 40. But the science says something very different. In this episode of Healthy AF , Zane Griggs breaks down the truth about metabolism, aging, and why fat loss gets harder for many people after 40. You'll learn why muscle loss, lifestyle habits, and hormone changes play a much bigger role than age itself — and what you can do to kee...

Most people think fatigue is a sleep problem. But the truth is… sleep is often just a symptom. In this episode, Zane breaks down why so many people—especially after 40—feel exhausted even when they're getting 7–8 hours of sleep. The real issue often comes from under-fueling, chronic fasting, low carb diets, and excessive training , which drive up stress hormones like cortisol and disrupt recovery....

Many people struggling with fatigue, weight gain, brain fog, or low libido may actually be dealing with thyroid dysfunction — and not even know it. In this episode of Healthy AF , Zane explains how common lifestyle habits like low-carb dieting, intermittent fasting, overtraining, chronic stress, and sleep deprivation can quietly disrupt thyroid function and slow your metabolism. You'll learn why m...

Most men focus on body weight, workouts, or body fat… but those numbers don't tell the full story. In this episode of Healthy AF , Zane breaks down the five blood markers every man over 40 should be tracking if they want to stay strong, energized, and metabolically healthy for decades to come. These biomarkers can reveal problems years before symptoms appear and help you catch issues related to me...

I recommended low-carb and intermittent fasting for nearly 20 years. Then my labs started telling a different story. In this episode, I break down why I stopped fasting, increased carbohydrates, lowered fat intake, and how that shift improved my fasting glucose, thyroid markers, LDL, sleep, and recovery. This isn't anti-keto/carnivore. It's anti-dogma. If you care about metabolic health, ATP produ...

Low-carb, ketogenic, and carnivore diets have helped a lot of people — myself included — at different stages of their health journey. But what happens when a strategy meant to heal is followed too long without reassessment? In this episode of Healthy AF, I sit down with Dr. Rachel Brown, a psychiatrist and functional medicine practitioner who shares her deeply personal experience after 10 years of...

For years, the health and fitness space has rewarded extremes — more restriction, more protocols, more supplements, more "hacks." But what happens when chasing optimization starts to quietly dismantle your health instead of improving it? In this episode of Healthy AF, Zane sits down with Dylan Gemelli for one of the most honest, wide-ranging conversations the show has had. Dylan's journey doesn't...

We talk a lot about fitness, metabolism, and hormones on this show — but if your gut's not right, none of it works properly. In this week's episode of Healthy AF, I sit down with Dr. Vincent Pedre, board-certified internist, functional medicine pioneer, and author of the bestselling book Happy Gut. Dr. Pedre has spent over two decades helping people repair their gut health, rebalance their microbi...

Most of us don't realize how deep our relationship with food runs until we try to change it. In this Healthy AF episode, I sit down with Meghann Hempel, who shares her powerful journey from battling food addiction, emotional eating, and self-sabotage to finding complete freedom through mindset, community, and real nourishment. For years, Meghann found herself stuck in the cycle so many of us know...

Low-carb, high-fat, keto — for a while, these were the tools that saved so many of us from the blood sugar rollercoaster. But what happens when the same diet that once healed you… starts to hold you back? In this week's Healthy AF episode, I sit down with Jen Winkler, a Functional Health and Hormone Coach who helps women heal from PCOS, PMS, insulin resistance, and blood sugar struggles through fo...

Low-carb might not be the health solution you think it is. After years of eating low-carb, fasting, and grinding through high-stress training, I started to notice something: my results were stalling, my sleep was off, and my labs were telling me I wasn't as metabolically "healthy" as I thought. When I added carbs back in—real food carbs from fruit, honey, and roots—my energy, recovery, and hormone...

Zane sits down with Dr. Mariza Snyder—practitioner, author, and host of Energized with Dr. Mariza—to reframe midlife for women as a window of opportunity, not a season of decline. She explains what perimenopause actually is, why so many providers miss it, and how proactive care (including lifestyle, strength training, and appropriately-timed HRT) can protect bone, brain, heart, mood, and metabolic...

In this episode of the Healthy AF Podcast, Zane Griggs sits down with Sammy Tejeda, CEO and founder of Liquivita, to discuss his powerful journey from firefighter paramedic to wellness entrepreneur. After witnessing the limitations of traditional medicine, Sammy set out to create a preventative health model that empowers both practitioners and patients. You'll hear how Liquivita started as a singl...

In this eye-opening episode of Healthy AF, Zane sits down with renowned physician and author Dr. Cate Shanahan to expose what might be the biggest hidden driver of metabolic disease today: seed oils. Dr. Cate breaks down the hard science behind how oxidative stress—not sugar—is at the root of most chronic diseases, and why the most oxidized ingredient in the American diet is also the most overlook...

In this dynamic backstage conversation at the Health Optimisation Summit, Zane sits down with industry icon JJ Virgin—bestselling author, fitness expert, and trailblazer in women's health. At 61, JJ is thriving both mentally and physically, and she's here to share why the old rules of health and aging need to be thrown out. From the myths of calorie counting and cardio obsession to the overlooked...

In this powerhouse episode recorded backstage at the Health Optimisation Summit, Zane sits down with the legendary Brad Kearns—former professional triathlete, bestselling author, and now world-ranked track athlete in the over-60 division. Brad shares how he ran a 60-second 400-meter sprint just days after turning 60 and what he's learned about fueling, training, and recovery along the way. From de...

In this episode of Healthy AF (Healthy After 50), Zane Griggs welcomes back Ben Azadi, a longtime leader in the keto and metabolic health space, to discuss his shift from Keto Kamp to Metabolic Freedom. Ben shares why calories in, calories out is an outdated strategy, how food additives and seed oils contribute to insulin resistance, and why the U.S. faces a much bigger metabolic health crisis com...

In this episode of Healthy AF (Healthy After 50), Zane Griggs sits down with Dr. Rob Kominiarek, founder of Renue Health, to discuss the power of hormone replacement therapy (HRT) for men and women. Dr. Rob has been helping people ages 40-75 optimize their health, maintain energy, and prevent heart disease through a foundational approach to hormone health. They cover the difference between "normal...

Think spinach salads and almond milk are the epitome of health? Think again. In this eye-opening episode, Zane sits down with Sally K. Norton, MPH, a leading expert on oxalates and author of Toxic Superfoods: How Oxalate Overload is Making You Sick and How to Get Better. Sally shares her decades of research and personal experiences to uncover how these naturally occurring compounds in many "superf...

In this episode of Healthy AF (Healthy After 50), Zane Griggs sits down with Dr. Chris Knobbe, a renowned expert on nutrition and chronic disease, to uncover the shocking truth about seed oils. From their origins to their widespread use in today's processed foods, this episode sheds light on why these oils may be the root cause of many modern health crises. What Are Seed Oils, and Why Are They So...

In this episode of Healthy AF (Healthy After 50), Zane Griggs sits down with Texas Slim, the founder of the Beef Initiative. They discuss Texas Slim's mission to restore transparency, reconnect consumers with ranchers, and rebuild trust in the beef industry. What is the Beef Initiative? The Beef Initiative, founded by Texas Slim, aims to bridge the gap between consumers and ranchers. It's a moveme...