How to Test for Functional Vitamin B12 Deficiency

Many doctors mistakenly rely on serum B12 levels in the blood to test for vitamin B12 deficiency.

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Now if you do get your homocysteine tested and despite both B12 supplementation and eating beans and greens it’s still too high (meaning double digits), I have a suggestion, as covered in the final two videos in this video series: Should Vegetarians Take Creatine to Normalize Homocysteine? (http://nutritionfacts.org/video/shoul...) and The Efficacy and Safety of Creatine for High Homocysteine (http://nutritionfacts.org/video/the-e....

How did we end up here? Watch the full series if you haven’t yet:
• What to Eat for Stroke Prevention (http://nutritionfacts.org/video/what-...)
• What Not to Eat for Stroke Prevention (http://nutritionfacts.org/video/what-...)
• Do Vegetarians Really Have Higher Stroke Risk? (http://nutritionfacts.org/video/do-ve...)
• Vegetarians and Stroke Risk Factors—Vitamin D? (http://nutritionfacts.org/video/veget...)
• Vegetarians and Stroke Risk Factors—Omega 3s? (http://nutritionfacts.org/video/veget...)
• Vegetarians and Stroke Risk Factors—Vegan Junk Food? (http://nutritionfacts.org/video/veget...)
• Vegetarians and Stroke Risk Factors—Saturated Fat? (http://nutritionfacts.org/video/veget...)
• Vegetarians and Stroke Risk Factors—Animal Protein? (http://nutritionfacts.org/video/veget...)
• Vegetarians and Stroke Risk Factors—Vitamin B12 & Homocysteine? (http://nutritionfacts.org/video/veget...)
• How to Test for Functional Vitamin B12 Deficiency (http://nutritionfacts.org/video/how-t...)

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Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM

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