The Fat Loss Formula: Why Protein + Fiber Work Better Together (Plus How Much Fiber You Actually Need)
Optimal Protein Podcast with Vanessa Spina
Vanessa Spina
4.6 • 795 Ratings
🗓️ 1 May 2026
⏱️ 33 minutes
🧾️ Download transcript
Summary
You've been told to eat more fiber…
But what if that's not why you're still hungry?
In this Friday recap, Vanessa breaks down the biggest insights from her conversation with Dr. Joanne Slavin — a leading fiber researcher who still says most people are focusing on the wrong thing for fat loss.
This episode unpacks why some "high fiber" diets backfire, what actually controls appetite, and the simple shift that makes fat loss feel dramatically easier.
🎯 In This Episode:
- How much fiber you actually need per day
- Why "eat more fiber" isn't enough
- The real driver of satiety (most people miss this)
- Why some high-fiber foods make you hungrier
💡 Listen if:
✔ You're eating "healthy" but still hungry
✔ Fat loss feels harder than it should
✔ You want a simpler, more effective approach
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
🔴 Tone Lux Red Light Therapy
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✨ Save 20% with code VANESSA
Discover:
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
💬 Join the Optimal Protein Podcast Community on Facebook
⚠️ Disclaimer
This podcast is for informational purposes only and is not medical or nutritional advice. Always consult your healthcare provider before making dietary or lifestyle changes.
Transcript
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| 0:00.0 | Welcome to the optimal protein podcast. I'm Vanessa Spina. |
| 0:04.2 | Hello, my friends, and welcome back to the optimal protein podcast. I'm your host, Vanessa, |
| 0:09.6 | and today's episode is a deep dive recap of my conversation with Dr. Joanne Slaven, one of the |
| 0:17.1 | most highly cited researchers in nutrition science. Now, going into this conversation, |
| 0:23.0 | I expected that we would be talking mostly about fiber. And we definitely did talk about fiber. |
| 0:29.7 | But what really surprised me and what I think is so important for you all to hear is how strongly |
| 0:35.3 | Dr. Slavin emphasized something that we talk about all the time on this |
| 0:39.5 | podcast. Protein is the foundation of healthy body composition, fat loss, and metabolic health. |
| 0:47.8 | So today I'm breaking down all the key takeaways, mechanisms, and practical insights that you can apply into your life today. |
| 0:56.8 | I cannot wait to mine all the gems for you from Monday's episode and share them with you in |
| 1:03.0 | today's recap episode. So let's take a really quick break and jump right into today's recap. |
| 1:15.2 | Well, welcome to the episode, my friends. |
| 1:22.2 | Happy Friday and happy 1st of May. This is a big day in many places of the world. It's considered a big holiday, May day. It's definitely a big deal in Czech, and there is this beautiful |
| 1:29.0 | tradition that I love that I learned about, which is that in May, and I think maybe specifically |
| 1:34.8 | on May Day today or this weekend, you need to take your love interest or partner to this |
| 1:43.5 | hill called Petrine Hill. |
| 1:45.3 | And you need to kiss them under a cherry blossom. |
| 1:48.8 | And it's this sort of lover's tradition. |
| 1:52.2 | And I think it is so cute. |
| 1:54.5 | So actually, we walk through that park sometimes on May 1st weekend. |
| 1:59.9 | And you actually see so many young couples there sitting together, |
| 2:04.0 | holding hands, looking at the view of the city, and sharing a kiss under an apple blossom tree. |
... |
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