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The Dr. Gabrielle Lyon Show

The Truth About Sweeteners, Seed Oils, and Building Real Strength | Nick Barringer, PhD

The Dr. Gabrielle Lyon Show

Dr. Gabrielle Lyon

Medicine, Science, Health & Fitness, Life Sciences

4.6 • 911 Ratings

🗓️ 29 April 2025

⏱️ 102 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

This week in the studio, I'm joined by Dr. Nick Barringer—Army Ranger, performance nutrition expert, and one of the sharpest minds in military and metabolic health. Together, we cut through the noise around today's most controversial nutrition topics. If you’ve ever felt whiplash trying to make sense of conflicting headlines, this episode is your science-based compass.

What’s really going on with artificial sweeteners like sucralose and aspartame? Are seed oils toxic—or just misunderstood? And what’s the actual science behind popular supplements like creatine, testosterone boosters and fat burners?

Dr. Barringer brings two decades of elite military and research experience to help us separate hype from evidence—while sharing real-world tools that help people perform, think, and feel better.

We cover:

  • Whether sucralose and other artificial sweeteners damage DNA or gut health
  • What to actually worry about with food dyes
  • Seed oils, inflammation, and what most people get wrong about them
  • Protein and carb dosing for people over 40 (and how to think about fiber and fat)
  • Why creatine is still the most underrated supplement for muscle and brain function
  • Tactical hydration tips (and how sweat composition varies with diet)
  • Hidden risks in testosterone boosters and “fat burners”
  • Practical takeaways for elite performance, healthy aging, and being stronger at any age

Who is Dr. Nick Barringer?

Nick Barringer, PhD, is a Nutritional Physiologist with deep experience in both applied and academic settings. He directed the U.S. Military-Baylor Graduate Program in Nutrition, taught at West Point, and was the first active-duty dietitian to graduate U.S. Army Ranger School and serve with the 75th Ranger Regiment. He holds a PhD in kinesiology from Texas A&M, and his research on tactical nutrition has been featured in outlets like Science Daily and Men’s Journal.

This episode is brought to you by:


Find Nick Barringer at:

  • LinkedIn - https://www.linkedin.com/in/nick-barringer-phd-rdn-cscs-cssd-5137789a/
  • Instagram - https://www.instagram.com/nickbarringer.phd.rdn/
  • Facebook - https://www.facebook.com/nickbarringer.phd.rdn/

Find me at:

Transcript

Click on a timestamp to play from that location

0:00.0

Are sweeteners quietly damaging your DNA? Is Ozempic slowly killing your parents? And why are

0:06.3

millions of people suddenly terrified of seed oils, food dyes, and even carrots? These aren't fringe

0:13.7

theories anymore. These are the viral headlines shaping how we eat, how we think about health, and how we live. And yet, very few people are

0:23.3

asking, what does a science actually say? I'll let you in on a little secret. Nutrition is

0:29.5

dangerously oversimplified. In this episode, I'm joined by Dr. Nick Beringer, Army Ranger,

0:36.5

performance nutrition expert, and one of the most

0:39.3

respected minds in overall health to break down controversial high-stakes questions dominating today's

0:47.9

nutrition landscape.

0:49.1

It's probably not great for you.

0:51.4

Now in a paper in 2023, the Journal of Toxicology, looked at sucralose,

0:58.0

and they found it converts to sucralose 6 acetate, which is genotoxic. It can damage DNA cells.

1:04.0

We're not here to follow the hype. We're here to challenge assumptions. Unpack the evidence

1:10.0

and figure out what's really at risk when it comes

1:13.2

to your health and longevity. If you want clarity in a sea of chaos, this episode can be your

1:20.0

filter. Dr. Nick Beringer, nutritional physiologist, which I love that term.

1:34.4

You are a great friend, and I'm going to read a little bit about you, which I think that

1:39.4

everyone's going to be quite impressed. I know that I am. You previously served you previously served as the director of the U.S.

1:47.3

Military Baylor University Graduate Program and Nutrition. You also served as an assistant professor

1:53.4

at the U.S. Military Academy at West Point. Really slim in it. You were the first active duty dietitian to graduate to graduate from the u.s.

2:06.1

army ranger school wow and you served with a 75th ranger regiment well done one more thing not

2:14.7

trying to embarrass you at all but um you got your degree in dietetics from

2:19.4

the University of Georgia and your doctorate in kinesiology from Texas A&M. You are an incredible speaker

...

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