Body Recomposition vs Weight Loss: What Fat Loss Science Reveals — Dr. Scott Forbes

Optimal Protein Podcast with Vanessa Spina

Vanessa Spina

Nutrition, Fitness, Health & Fitness

4.6 • 795 Ratings

🗓️ 26 January 2026

⏱️ 66 minutes

🔗️ Recording | iTunes | RSS

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Summary

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Most fat-loss advice focuses on the scale — but what if that's the wrong metric entirely? In this episode, Vanessa Spina is joined by Dr. Scott Forbes, exercise physiologist and professor at Brandon University, whose research challenges many of the assumptions behind traditional weight-loss approaches.

Dr. Forbes has authored and co-authored numerous randomized controlled trials and large meta-analyses examining how training style, protein intake, creatine supplementation, sleep, and aging influence fat loss, muscle retention, and metabolic health.

Rather than chasing weight loss, this conversation explores what happens when the goal shifts to body recomposition — losing fat while preserving or building muscle — and why that distinction changes everything.

In this episode, we explore:

Why weight loss and fat loss are not the same thing
The surprising differences between cardio, resistance training, and combined approaches
Why some people lose weight but stall metabolically
How protein and creatine fit into a muscle-centric fat-loss strategy
Why fat loss becomes harder with age — and what still works
A largely overlooked factor that influences where fat is stored

If you've ever done "everything right" and still felt stuck, this episode offers a science-backed reframe that may completely change how you approach fat loss.

👉 Subscribe, rate, and review the Optimal Protein Podcast to support the show and help bring you more evidence-based conversations on fat loss, protein, and muscle-centric nutrition.

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The content provided in this podcast is for informational purposes only and should not be construed as medical advice. Consult with a healthcare professional before making significant changes to your diet or exercise regimen.

Transcript

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0:00.0	Welcome to the optimal protein podcast. I'm Vanessa Spina. Hello, my friends, welcome back to the optimal
0:07.3	protein podcast. I'm your host, Vanessa, and I am super excited for today's episode because it is a
0:13.6	masterclass in the science of body recomposition. We do a deep dive into fat loss, body recomp, and muscle preservation. And I'm joined by Dr. Scott Forbes,
0:24.9	an exercise physiologist and researcher whose work has helped clarify some of the most misunderstood
0:30.9	topics in fat loss science. Dr. Forbes is a professor at Brandon University, and he's authored and co-authored numerous randomized
0:39.9	controlled trials and large-scale meta-analysis, examining how different training modalities,
0:46.3	protein intake, creatine supplementation, sleep, and aging, influence body fat, lean mass,
0:52.3	and metabolic health. I was so excited to ask him about
0:56.5	some fascinating research on creatine and losing fat mass, and the actual mechanisms behind
1:03.8	it absolutely blew my mind. It has to do with receptors on fat cells for creatine.
1:16.0	And it was so interesting to get to ask him about this effect.
1:20.5	Because when most people think of creatine, they think of their muscle mass improving or even intensity in workouts, but not so much reduction of body fats.
1:26.4	So this was a really cool area.
1:28.3	We also got to ask him about sleep and fat distribution on the body, which is fascinating.
1:36.2	How much you sleep may affect where your body stores fat.
1:41.2	So some really cool novel topics that we haven't really explored that much
1:45.9	on the podcast to date. And we also unpack his findings, brand new findings, comparing
1:52.4	cardio versus resistance training for fat loss and also concurrent training with both modalities,
1:58.7	the impact of protein and creatine supplementation,
2:03.1	and how they support fat loss and protect muscle, and why sleep may be one of the most
2:08.9	underrated variables in body fat distribution. So if your goal is to lose fat without losing muscle
2:15.4	or to finally understand why past fat loss attempts may have
	...

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