The Hidden Deficiency Destroying Your Brain & You Don't Know You Have It | Dr Martin Warren

Discover why the standard B12 test might be missing your deficiency, and learn the better biomarkers that could reveal if brain fog, fatigue, and cognitive decline are actually nutrition-related rather than age-related.

In this deep dive with Dr. Martin Warren, Chief Scientific Officer at the Quadrum Institute and leading B12 researcher, we explore why vitamin B12 deficiency is far more common and complex than most people realize. Dr. Warren explains why standard B12 blood tests are unreliable (with only 50/50 accuracy for detecting deficiency), why the current deficiency cutoff of 148 picomolar may be too low, and how homocysteine and methylmalonic acid are better indicators of functional B12 status. He reveals that B12 deficiency can masquerade as normal aging—causing brain fog, fatigue, and cognitive decline—but is often reversible with proper treatment. The discussion covers why plant-based diets create deficiency risks, how absorption changes with age due to intrinsic factor decline, the connection between B12 and brain health (including white matter damage), and practical testing and supplementation strategies. Dr. Warren also makes a compelling case for revolutionizing healthcare through regular micronutrient monitoring rather than waiting for disease symptoms to appear.

🌐Links in this video

Quadram Institute. https://quadram.ac.uk/people/martin-warren/

Pernicious anemia society https://pernicious-anaemia-society.org/

Club 12 https://www.club-12.org/

Vitamin B12 Levels Association with Functional and Structural Biomarkers of Central Nervous System Injury in Older Adults https://pubmed.ncbi.nlm.nih.gov/39927551/

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