Can fiber really impact anxiety, brain fog, and depression? In this episode of the Wellness That Fits Podcast, registered dietitian Cassie Groeschl breaks down the powerful connection between gut health, fiber, and mental wellness.

You’ll learn how your gut bacteria create brain-supportive compounds called short-chain fatty acids (like butyrate), why most women are severely under-eating fiber, and how low-fiber diets may contribute to inflammation, mood changes, fatigue, and cognitive dysfunction.

Cassie also explains:

• The gut-brain connection and mental health
• How fiber supports serotonin pathways and reduces neuroinflammation
• Why plant diversity matters more than perfection
• Whole foods vs. fiber supplements
• Easy ways to increase fiber without digestive overwhelm
• Why women with IBS, IBD, anxiety, or brain fog may need a different approach

If you’re struggling with low energy, anxious thoughts, poor focus, or feeling mentally exhausted, this episode will help you understand how foundational nutrition directly impacts brain health.

✨ Take the Brain & Energy Assessment to discover whether your current eating habits may be worsening anxiety, fatigue, or brain fog.

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Chapters List

00:00 Introduction to Nutrition Psychology

02:18 The Role of Fiber in Mental Health

07:29 Short Chain Fatty Acids and Their Impact

10:40 Gut Health and Depression

12:43 Whole Foods vs. Fiber Supplements

15:21 Increasing Fiber Diversity

22:12 Practical Tips for Fiber Intake