When the scale goes down, how much of that weight is actually body fat—and how much could be metabolically active muscle?
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In today's episode of the Optimal Protein Podcast, Vanessa welcomes leading protein and muscle researcher Dr. Leigh Breen back to discuss how to protect lean mass during weight loss.
They examine an important concern surrounding traditional dieting and GLP-1-assisted weight loss: people may lose muscle alongside body fat, yet regain predominantly fat afterward. Could repeated cycles of weight loss and regain ultimately leave someone with worse body composition?
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Vanessa and Dr. Breen also explore how much protein we may actually need, whey versus plant protein, anabolic resistance, the importance of leucine, and why breakfast may be the biggest missed opportunity for protein.
They also discuss his fascinating "prehabilitation" research showing how one resistance-training session helped protect older adults' muscle during five days of bed rest.
In this episode, they discuss:
• How much protein may help preserve muscle during weight loss
• Why scale weight cannot reveal whether you are losing fat or muscle
• Muscle loss during GLP-1-assisted weight loss
• What may happen when lost weight is regained
• Protein and resistance training for protecting lean mass
• Whey versus pea protein for muscle anabolism
• Why the leucine response matters
• When protein quality becomes increasingly important
• What anabolic resistance is and how to overcome it
• How much protein older adults may need per meal
• Why breakfast is often the weakest link in protein intake
• How one workout before bed rest helped protect muscle
• The potential benefits of "prehab" before planned inactivity
• How whey protein may support post-meal glucose control
If your goal is to lose body fat while preserving metabolically active muscle, this episode explains why the quality of your weight loss matters just as much as the number on the scale.
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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, supplements, or exercise regimen.