Ep. 309 - Understanding Fasting Insulin Levels | Why Doctors Don't Test It | Optimal Ranges for Metabolic Health | Insulin Resistance Prevention | Testing Your Own Levels | New Fasting Persona Quiz!

Fasting For Life

Scott Watier

Nutrition, Alternative Health, Health & Fitness

4.6 • 1.1K Ratings

🗓️ 2 December 2025

⏱️ 41 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this foundational episode, Dr. Scott Watier and Tommy Welling explore why fasting insulin may be the most critical yet overlooked health metric for preventing chronic disease and achieving lasting weight loss. They break down insulin's essential roles throughout the body—from brain health and bone growth to muscle building and hormone production—while explaining how insulin resistance silently develops years before diabetes diagnosis. The hosts reveal why standard medical testing focuses on downstream markers like fasting glucose and A1C instead of measuring insulin directly, and they provide practical guidance on how to order your own fasting insulin test for as little as $20. They discuss optimal insulin ranges based on leading researchers, explain the HOMA-IR calculation for assessing insulin resistance, and deliver actionable strategies including time-restricted eating, protein prioritization, zone two exercise, and stress management. This episode empowers you to become your own health advocate by understanding and optimizing this upstream marker that connects to eight of the top ten causes of mortality. ⁠⁠⁠⁠⁠⁠⁠⁠Take the NEW FASTING PERSONA QUIZ! - The Key to Unlocking Sustainable Weight Loss With Fasting!⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Resources and Downloads: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠SIGN UP FOR THE DROP OF THE ULTIMATE GUIDE TO BLOOD SUGAR CONTROL⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠GRAB THE OPTIMAL RANGES FOR LAB WORK HERE! - NEW RESOURCE! ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠FREE RESOURCE - DOWNLOAD THE NEW BLUEPRINT TO FASTING FOR FAT LOSS!⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠SLEEP GUIDE DIRECT DOWNLOAD⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠DOWNLOAD THE FASTING TRANSFORMATION JOURNAL HERE!⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Partner Links: Get your⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ FREE BOX OF LMNT⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ hydration support for the perfect electrolyte balance for your fasting lifestyle with your first purchase⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ here!⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Get ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠25% off a Keto-Mojo⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ blood glucose and ketone monitor (discount shown at checkout)! ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Click here!⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Our Community: Let’s continue the conversation. Click the link below to JOIN the ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Fasting For Life Community⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠, a group of like-minded, new, and experienced fasters! The first two rules of fasting need not apply! If you enjoy the podcast, please tap the stars below and consider leaving a short review on Apple Podcasts/iTunes. It takes less than 60 seconds, and it helps bring you the best original content each week. We also enjoy reading them!

Transcript

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0:00.0	Hello, I'm Dr. Scott Wadier.
0:03.0	And I'm Tommy Welling, and you're listening to the Fasting for Life podcast.
0:07.0	This podcast is about using fasting as a tool to regain your health, achieve ultimate wellness, and live the life you truly deserve.
0:15.0	Each episode is a short conversation on a single topic with immediate actionable steps.
0:20.0	We cover
0:20.9	everything from fat loss and health and wellness to the science of lifestyle design.
0:25.2	We started fasting for life because of how fasting has transformed our lives and we hope
0:29.2	to share the tools that we have learned along the way.
0:31.6	Hey everyone, welcome to the Fasting for Life podcast.
0:42.6	My name is Dr. Scott Water, and I'm here, as always, my good friend and colleague, Tommy Welling.
0:45.6	Good afternoon to you, sir.
0:47.1	Hey, Scott.
0:47.6	How are you?
0:48.4	Doing fantastic, my friend.
0:49.8	Today we're going to be talking about one of our foundational key concepts of the fasting for life podcast and the fasting for life lifestyle.
0:59.0	We are going to be talking about insulin, normal levels, why we don't test it more than we should,
1:05.0	and what we can do to get some clear insights in where you are on your health, metabolic, and weight loss journey.
1:12.3	So if you are new to the podcast, welcome in.
1:15.1	Excited to have you with us.
1:16.5	Thanks for finding us.
1:17.4	Thanks for giving us a shot.
1:19.2	Excited to be on a fasting lifestyle journey with you.
	...

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