Lowering the Barrier

44: Gut Health 101 w/ Dr. Leila Shinn

If you've ever bought a probiotic off a shelf, considered a gut cleanse, or wondered whether your microbiome is the reason you're not feeling your best - this episode is for you. Alex sits down with Dr. Leila Shinn, a senior scientist and microbiome researcher, to cut through one of the most overcrowded and overhyped spaces in the wellness industry: gut health. From the brand new scientific consensus definition of what gut health actually means, to the facts behind fiber, probiotics, detoxes, and "leaky gut" - Dr. Shinn brings clarity, honesty, and a healthy skepticism toward the products promising to fix you. You'll learn why fiber diversity matters more than fiber quantity, how your microbiome can shift in as little as two to four days, what to look for on a probiotic label, and why the best thing you can do for your gut probably isn't something you can buy. This is the episode to send to anyone who's ever felt like their gut health is broken - because chances are, it isn't. Timestamps: 00:00 Introduction01:14 Meet Dr. Leila Shin02:26 What Is the Microbiome?16:44 Defining Gut Health (The New Science)20:16 Why Fiber Matters26:13 Fiber Diversity vs. Fiber Amount29:58 Antibiotics & Your Gut36:17 Prebiotics, Probiotics & Postbiotics44:23 The Carnivore Diet & Your Microbiome54:37 Medications: NSAIDs & Antacids56:20 At-Home Microbiome Tests — Worth It?58:44 Cleanses & Detoxes — The Truth1:02:45 The Bristol Stool Chart1:05:41 Alcohol & Leaky Gut WHERE TO FIND DR. LEILA SHINN https://www.instagram.com/ilikebigguts/ [https://www.instagram.com/ilikebigguts/] http://instagram.com/nutrishinn/ [http://instagram.com/nutrishinn/] REFERENCES FROM EPISODE https://usprobioticguide.com/ [https://usprobioticguide.com/] https://www.nature.com/articles/s41575-026-01176-x [https://www.nature.com/articles/s41575-026-01176-x] MY LINKS Website: ⁠https://www.alexthiemefitness.com/⁠ [https://www.alexthiemefitness.com/] Instagram: ⁠https://www.instagram.com/alexthiemefitness/⁠ [https://www.instagram.com/alexthiemefitness/] TikTok: ⁠https://www.tiktok.com/@alexthiemefitness⁠ [https://www.tiktok.com/@alexthiemefitness] Join my email list: ⁠https://www.alexthiemefitness.com/email⁠ [https://www.alexthiemefitness.com/email] If you loved this episode, please follow/subscribe and give a 5 star review! Thank you! Bonus points - share it with a friend who might enjoy the show.

43: Body Composition Tests Explained: Which Ones Are Accurate (and Which Are a Scam?)

Ever wondered how accurate body fat tests actually are? DEXA, smart scales, calipers - do they really tell you anything useful? What we’ll talk about: * Which body composition tests are worth your money (and which aren’t) * Why the number matters less than people think * Better ways to track real progress over time

42: The 98% Rule (The Easiest Way To Be Healthy)

In this episode, we break down the small set of habits responsible for nearly all long-term health outcomes (within your control) - and why most people waste time obsessing over the wrong details. You’ll learn the fundamentals without getting sucked into biohacking culture, fear-based marketing, or extreme diets. If you want a calmer, clearer philosophy for lifelong health, start here. Timestamps: 00:00 Intro 10:30 What does not meaningfully contribute to health? 18:10 Healthy weight 24:40 Protein 30:00 Fiber 36:30 Saturated fat 40:40 Healthy fats 43:40 Alcohol and smoking 48:10 Dietary summary 50:30 Lift weights 58:00 Don’t be sedentary 1:01:40 Sleep 1:05:20 Hobbies 1:08:20 Social life and community 1:10:20 Supplements MY LINKS Website: ⁠https://www.alexthiemefitness.com/⁠ [https://www.alexthiemefitness.com/] Instagram: ⁠https://www.instagram.com/alexthiemefitness/⁠ [https://www.instagram.com/alexthiemefitness/] TikTok: ⁠https://www.tiktok.com/@alexthiemefitness⁠ [https://www.tiktok.com/@alexthiemefitness] Join my email list: ⁠https://www.alexthiemefitness.com/email⁠ [https://www.alexthiemefitness.com/email] If you loved this episode, please follow/subscribe and give a 5 star review! Thank you! Bonus points - share it with a friend who might enjoy the show.

41: The Problem with America (Hear Me Out)

In this episode, we dive into the significant health disparities between the U.S. and Europe - covering topics like universal healthcare, food deserts, public transportation and more. We bridge those slightly controversial topics to health-related outcomes like obesity, diabetes, and heart disease. Health is political - and policy can heavily influence health. Timestamps: 00:00 Intro 7:00 City layouts 14:50 Healthcare 23:00 Food deserts 35:00 Work culture 45:40 Food environment MY LINKS Website: ⁠https://www.alexthiemefitness.com/⁠ [https://www.alexthiemefitness.com/] Instagram: ⁠https://www.instagram.com/alexthiemefitness/⁠ [https://www.instagram.com/alexthiemefitness/] TikTok: ⁠https://www.tiktok.com/@alexthiemefitness⁠ [https://www.tiktok.com/@alexthiemefitness] Join my email list: ⁠https://www.alexthiemefitness.com/email⁠ [https://www.alexthiemefitness.com/email] If you loved this episode, please follow/subscribe and give a 5 star review! Thank you! Bonus points - share it with a friend who might enjoy the show.

40: Ice Baths: Overhyped Trend or Legit Recovery Tool?

MATTI IS BACK and today, we are back behind the mic to break down the cold hard truth about ice baths. Do they really speed recovery? Help with fat loss? Boost mental toughness? Together we dig into the science, call out flawed studies, and share when (and if) cold water immersion actually makes sense. Expect myth-busting, practical takeaways, and plenty of laughs as we cut through the hype so you’ll know whether to jump in - or skip the tub altogether. Timestamps: 00:00 Intro 10:00 For recovery? Muscle growth/strength? 14:20 For fat loss? 30:45 For mental toughness? 41:15 When do they make sense? MY LINKS Website: ⁠https://www.alexthiemefitness.com/⁠ [https://www.alexthiemefitness.com/] Instagram: ⁠https://www.instagram.com/alexthiemefitness/⁠ [https://www.instagram.com/alexthiemefitness/] TikTok: ⁠https://www.tiktok.com/@alexthiemefitness⁠ [https://www.tiktok.com/@alexthiemefitness] Join my email list: ⁠https://www.alexthiemefitness.com/email⁠ [https://www.alexthiemefitness.com/email] If you loved this episode, please follow/subscribe and give a 5 star review! Thank you! Bonus points - share it with a friend who might enjoy the show.