PSMF SERIES: Protein Sparing Modified Fasting 101: Burn Fat, Preserve Muscle & Break Through Fat Loss Stalls — Optimal Protein Podcast with Vanessa Spina

Welcome to the first episode of the Summer Protein Sparing Modified Fasting Series on the Optimal Protein Podcast. In this episode, Vanessa introduces the science, history, and practical application of protein sparing modified fasting, or PSMF, as a powerful tool for fat loss and body recomposition.

Check out the Protein-Sparing Modified Fasting Library at ketogenicgirl.com and use code VANESSA for 20% off.

Vanessa explains how PSMF was originally developed to help preserve lean body mass during severe energy restriction, why it differs from water fasting or traditional low-calorie dieting, and how prioritizing protein can help support satiety, fat loss, and muscle retention.

This episode also explores the origins of PSMF with Dr. George Blackburn and Dr. Bruce Bistrian, its use in bariatric and physique-prep settings, and why strategic high-protein, lower-calorie days may be especially helpful for those who want to lose fat while protecting hard-earned muscle.

You'll learn what a PSMF day can look like in practice, including protein targets, calorie ranges, lean protein choices, and how to combine PSMF days with maintenance days for a more sustainable approach.

In this episode, Vanessa covers:

What protein sparing modified fasting is
Why preserving lean mass matters during fat loss
How PSMF differs from water fasting
The history of PSMF and its clinical origins
Why protein supports satiety and metabolic rate
How PSMF may support rapid fat loss without sacrificing muscle
Practical meal structure, macros, and food examples
Why resistance training is key for body recomposition
Who PSMF may and may not be appropriate for

Summer PSMF Series Re-Release Note:
This episode was previously released on the Optimal Protein Podcast and is being re-released as part of the Summer Protein Sparing Modified Fasting Series.

The PSMF Library is officially live 🎉

This is the exact structured, high-protein approach Vanessa used for fat loss and body recomposition — without restricting calories every single day.

Instead of guessing what to eat or starting over each week, you'll follow a clear, repeatable system combining high-protein, lower-energy days with maintenance days.

✨ What's Included

📘 Premium printed PSMF Library
⚡ Instant digital access
🥩 High-protein, low-carb recipe library
🧠 Tiered system (PSMF + maintenance days)
🛒 Grocery lists + planning tools
👥 3 months of community support

👉 Check it out here + get 20% off with code VANESSA

IQBAR – Try the Ultimate Sampler Pack: IQBARs, IQMIX, and IQJOE! Text VANESSA to 64000 for a 20% off discount code

🔴 Tone Lux Red Light Therapy

Boost collagen, elastin, and recovery

✨ Save 20% with code VANESSA

Discover:

🔬 Tone Device

Vanessa uses the Tone Device as a proxy for fat loss + autophagy on PSMF days

Check it out HERE 👉 Use code VANESSA for 20% off

📚 Free Resource

Get your free high-protein keto guide :
👉 The Keto Reset eBook

👤 Connect with Vanessa

Instagram: @ketogenicgirl

📱 Follow for:

Latest fat loss research
Protein optimization strategies

🎙 @optimalproteinpodcast for episode updates

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Disclaimer:

This episode is for educational purposes only and is not medical advice. Always consult your physician before beginning any new diet, fasting, weight loss, or exercise protocol.