How To Lose Fat Without Losing Muscle, Seed Oils vs Butter, Surprising New Research on Collagen for Mood & Recovery — Dr. Nick Barringer
Optimal Protein Podcast with Vanessa Spina
Vanessa Spina
4.6 • 795 Ratings
🗓️ 12 January 2026
⏱️ 66 minutes
🧾️ Download transcript
Summary
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In this episode of the Optimal Protein Podcast, Vanessa is joined by Dr. Nick Barringer, former U.S. Army officer, researcher, Registered Dietitian, and Chief Academic Officer at Lionel University. Dr. Barringer has led cutting-edge research on protein intake, recovery, and resilience under extreme physical and psychological stress, working with tactical athletes including Army Rangers, Navy SEALs, and West Point cadets.
This conversation goes far beyond the military. Dr. Barringer breaks down how women and everyday high performers can apply the same evidence-based strategies to lose fat without losing muscle, recover more effectively, and avoid the biggest pitfalls of aggressive dieting.
Together, Vanessa and Dr. Barringer cut through fear-based nutrition messaging and explore what human research actually shows about protein intake, recovery, seed oils, supplements, and collagen.
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Transcript
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| 0:00.0 | Welcome to the optimal protein podcast. I'm Vanessa Spina. |
| 0:04.7 | Hello, my friends. Welcome back to the optimal protein podcast. I'm your host, Vanessa, and today we're diving deep into how to lose fat while protecting your muscle, recover smarter, not harder, and cut through some of the biggest myths in nutrition and supplementation. |
| 0:20.7 | My guest today is Dr. Nicholas |
| 0:22.8 | Berringer, a former U.S. Army officer, researcher, and chief academic officer at Lionel University. |
| 0:29.9 | He's led studies on protein timing, elite recovery, and even mental health during extreme |
| 0:35.8 | physical stress, drawing on his experience working |
| 0:38.8 | with tactical athletes like Navy SEALs and Army Rangers. |
| 0:42.6 | But this episode is not just about soldiers, it's about you. |
| 0:46.8 | We talk about how women can use the same strategies to get leaner, stronger, and more resilient, |
| 0:52.0 | especially during fat loss phases. |
| 0:55.6 | We also set the record straight on protein myths, the real effects of energy deficits on your mood and hormones, and we tackle |
| 1:01.1 | some hot button topics in the nutrition world like seed oils, all the controversy around them |
| 1:06.3 | with an evidence-based lens on what the science really shows in humans. So if you're interested in things |
| 1:13.6 | like how collagen can boost your mood, there is some cutting edge research that we talk about. |
| 1:19.1 | If you've been working hard but not seeing the results that you want or you're simply tired |
| 1:23.4 | of all the fear-based nutrition advice out there, this episode is for you. I can't wait to jump |
| 1:28.9 | into today's episode with Dr. Berenger, and we will do so right after this quick break. |
| 1:34.9 | Friends, as we head into this new year, I know a lot of you have big goals, just like I do. |
| 1:41.6 | One of my biggest focuses in 2025 was metabolic efficiency, losing body |
| 1:47.9 | fat while preserving muscle and supporting longevity. One tool that I've been using consistently on my |
| 1:55.2 | protein sparing modified fasting days is the tone breath ketone analyzer. |
| 2:06.5 | Now, on protein sparing modified fasting days, we're driving the body into ketogenesis. |
... |
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