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Hosted by Shawna Barker, plant-based nutritionist and longtime vegan, Vegan Boss Radio is your place to explore everything from plant-based nutrition and health to vegan lifestyle, ethics, fitness, and the real-life challenges of living your values in a non-vegan world.
Whether you’re vegan, plant-curious, or simply interested in eating more plants and feeling your best, you’ll find practical, evidence-informed conversations designed to help you thrive.
Each episode features fascinating people from all walks of life, including nutrition experts, doctors, athletes, entrepreneurs, authors, activists, and the many other amazing vegans out there making a difference, sharing their knowledge, stories, and experiences.
Subscribe and start exploring Vegan Boss Radio.
Want personalized guidance with your plant-based diet?
Shawna offers 1:1 nutrition consultations and plant-based nutrition support through Synergy Nutrition, helping you build a healthy, balanced approach to eating more plants, without the overwhelm.
👉 Nutrition Services: synergynutrition.ca
Instagram: @vegan_boss
Facebook: @veganbossradio
And be sure to check out our new apparel line, Vegan Boss Apparel on our Shop page and Instagram: @veganbossapparel
Hosted by Shawna Barker, plant-based nutritionist and longtime vegan, Vegan Boss Radio is your place to explore everything from plant-based nutrition and health to vegan lifestyle, ethics, fitness, and the real-life challenges of living your values in a non-vegan world.
Whether you’re vegan, plant-curious, or simply interested in eating more plants and feeling your best, you’ll find practical, evidence-informed conversations designed to help you thrive.
Each episode features fascinating people from all walks of life, including nutrition experts, doctors, athletes, entrepreneurs, authors, activists, and the many other amazing vegans out there making a difference, sharing their knowledge, stories, and experiences.
Subscribe and start exploring Vegan Boss Radio.
Want personalized guidance with your plant-based diet?
Shawna offers 1:1 nutrition consultations and plant-based nutrition support through Synergy Nutrition, helping you build a healthy, balanced approach to eating more plants, without the overwhelm.
👉 Nutrition Services: synergynutrition.ca
Instagram: @vegan_boss
Facebook: @veganbossradio
And be sure to check out our new apparel line, Vegan Boss Apparel on our Shop page and Instagram: @veganbossapparel
Episodes

Aug 1, 2026
Aug 1, 2026
48 min
What if the key to better digestive health isn't simply eliminating more foods but understanding what's happening beneath the surface?
In this episode, I'm joined by James Marin, RD, EN, an Integrative Registered Dietitian, Environmental Nutritionist, and co-founder of the Good Gut SIBO/IBS Program and Married to Health.
James is known for taking a systems-based approach to health, looking beyond symptoms to identify the root causes of digestive issues. In this conversation, we explore the gut microbiome, fibre, IBS, SIBO, histamine intolerance, and a plant-based approach to supporting gut health. We also discuss what happens to the gut when we don't consume enough fibre, whether beneficial gut bacteria can recover after years of a low-fibre diet, and why taking a whole-person approach is often more effective than simply chasing symptoms.
Whether you're struggling with digestive issues, interested in optimizing your gut health, or want to better understand the science behind the microbiome, this episode is packed with practical insights and evidence-based information.
In this episode, we discuss:
• The importance of dietary fibre for gut and overall health
• What happens to the gut microbiome on a long-term low-fibre diet
• How gut bacteria support the intestinal barrier
• SIBO and IBS: causes, misconceptions, and treatment approaches
• Histamine intolerance and MCAS
• Looking beyond food when investigating digestive symptoms
About James Marin
James Marin, RD, EN is an Integrative Registered Dietitian, Environmental Nutritionist, co-founder of the Good Gut SIBO/IBS Program, Good Gut LIVE podcast, and COO of Married to Health, an integrative private practice of Registered Dietitians. James specializes in using systems-based approaches to come up with real world solutions across various mediums. Whether it is integrative nutrition therapies for optimal microbiome health, plant-based nutrition, wellness entrepreneurship, or regenerative agriculture; James has a passion to identify and address root issues while linking various systems to pose logical and efficient foundations for thriving biological organizations.
Connect with James and Married to Health at their website marriedtohealth.com, Instagram @marriedtohealth, podcast Good Gut LIVE, and Youtube @marriedtohealth.
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About Your Host:
Shawna Barker is a nutritionist with a BSc. in Nutrition and has been vegan since 2002. With over 14 years of experience, she brings evidence-based insights to help you build a plant-based life that actually works for you.
Work With Me:
If you're ready to go plant-based or already are and want to feel more confident about your nutrition, I offer private consultations with personalized, evidence-based guidance. No overwhelm, just clarity.
Book your free 15-minute discovery call at synergynutrition.ca
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Vegan Boss Resources:
🛒 Supplements: 100% vegan, carefully curated and 10% off everything, always. Visit my Online Store. Ships across Canada.
👕 Apparel: Wear the message. Shop Vegan Boss Apparel and follow @veganbossapparel on Instagram.
🎧 Enjoying the show? Subscribe, share this episode with someone who is interested in health and veganism, and leave a review, it really helps more people find the podcast.
📩 DM me anytime on Instagram @vegan_boss
Aug 1, 2026
48 min

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