Vitamin B12 supports your brain, nerves, blood cells, methylation, and cellular energy, yet deficiency can go unnoticed for years. In this episode, I explain why medications, digestive conditions, age, and dietary patterns can interfere with B12 absorption. I also compare the major forms of B12, discuss oral, sublingual, nasal, and injectable delivery, and explain why methylmalonic acid may reveal a functional deficiency that a serum B12 test misses.
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About the Host:
Dr. Mark Stengler is a Naturopathic Medical Doctor who received training in both conventional medicine and natural alternatives. He has been in private practice for 31 years and has helped tens of thousands with integrative medicine. He was voted 2025 Top Holistic Doctor of the Year by the International Association of Top Professionals. Dr. Stengler served on a medical advisory committee for the Yale University Complementary Medicine Outcomes Research Project. Dr. Stengler is the author/co-author of more than 20 books, including his most recent, The Holistic Guide To Gut Health: Discover the Truth About Leaky Gut, Balancing Your Microbiome, and Restoring Whole-Body Health.
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Social Handles:
Connect with Dr. Mark Stengler
Websites: https://drstengler.com; https://www.markstengler.com/
Youtube: https://www.youtube.com/@DrMarkStengler
Instagram: https://www.instagram.com/markstengler/
LinkedIn: https://www.linkedin.com/in/markstengler/
Facebook: https://www.facebook.com/markstengler
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