Do Vitamin B12 Supplements Cause Bone Fractures and Lung Cancer?

Do Vitamin B12 Supplements Cause Bone Fractures and Lung Cancer?

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The connection between B12, bone health and cancer. What do randomized controlled trials of high-dose daily vitamin B12 supplementation show about the effects on cancer risk, death, and longevity?

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If you missed my previous video, check out Do Vitamin B12 Supplements Cause Acne? (

Watch my other B12 updates:
• The Symptoms of Vitamin B12 Deficiency (
• The Optimal Vitamin B12 Dosage for Adults (
• Healthiest Food Sources of Vitamin B12 (
• The Optimal Vitamin B12 Dosage for Kids, Pregnancy, and Seniors (
• The Best Type of Vitamin B12: Cyanocobalamin or Methylcobalamin? (

All of these videos can be found in one digital download: Latest Vitamin B12 Recommendations (

I’ve also explored vitamin B12’s role in stroke risk. See:
• Vegetarians and Stroke Risk Factors: Vitamin B12 and Homocysteine? (
• How to Test for Functional Vitamin B12 Deficiency (
• Should Vegetarians Take Creatine to Normalize Homocysteine? (
• The Efficacy and Safety of Creatine for High Homocysteine (

That series is also available for digital download: Why Do Vegetarians Have Higher Stroke Risk? (

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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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