34. Vitamin B12 Explained: Forms, Methylation, Homocysteine & Absorption

In this episode of The Histamine Well Podcast, Joanne is joined by scientist James Bradshaw for an in-depth discussion on Vitamin B12 and its critical role in human health.Together, they unpack the complex biochemistry of Vitamin B12, exploring how it supports methylation pathways, homocysteine metabolism, and neurological function. This episode provides clarity on why Vitamin B12 deficiency is often overlooked, how genetic variations can impact B12 utilization, and why choosing the correct form of B12 supplementation is essential for optimal outcomes.Joanne and James also examine the different forms of Vitamin B12—including methylcobalamin, hydroxocobalamin, adenosylcobalamin, and cyanocobalamin—discussing how each functions in the body and when one may be more appropriate than another. The conversation highlights common signs and symptoms of B12 deficiency, from fatigue and brain fog to neurological and mood-related concerns, and offers practical, evidence-informed strategies for assessing and supporting B12 status.This episode is especially valuable for health practitioners, functional medicine clinicians, and individuals seeking a deeper understanding of how Vitamin B12, genetics, and methylation intersect to influence long-term health.In This Episode, You’ll Learn:Why Vitamin B12 is essential for methylation, detoxification, and neurological healthThe different forms of Vitamin B12 and how they work in the bodyCommon and often-missed symptoms of Vitamin B12 deficiencyHow B12 supports homocysteine regulation and cardiovascular healthHow to choose the right B12 supplementation based on individual needsThe connection between genetics, methylation pathways, and B12 metabolism✨ Want more? Follow on Instagram, Facebook, and YouTube for updates and tips.📘 New to this journey? Buy The Ultimate Bundle for Managing Histamine Intolerance—your step-by-step guide to manage your histamine intolerance effectively. 🧪 Curious about your methylation status? Try our at-home Methylation Test! In just 15 minutes, discover if you're over-methylating or under-methylating and receive targeted supplement recommendations to help rebalance. Use code HISTAMINEWELL10 for 10% off.🎓 Practitioner or student? Join the waitlist for the Histamine & Methylation Online Group Coaching Course starting early 2026!📆 Work with us 1:1! Book a consultation and take your first step to real healing.🎤 Have a topic suggestion? Submit it here!