Subscribe to NutritionFacts.org’s free newsletter to receive our B12 infographic that covers the latest research takeaways and Dr. Greger’s updated recommendations: https://nutritionfacts.org/subscribe/ DESCRIPTION: There are two vitamins not produced by plants that may require supplementation. Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/videos/vitamin-supplements-worth-taking/ and I’ll try to answer it! https://NutritionFacts.org • Subscribe: https://nutritionfacts.org/subscribe • Donate: https://nutritionfacts.org/donate • Podcast : https://nutritionfacts.org/audio • Facebook: www.facebook.com/NutritionFacts.org • Twitter: www.twitter.com/nutrition_facts • Instagram: www.instagram.com/nutrition_facts_org • Books (including the NEW How Not to Diet Cookbook): https://nutritionfacts.org/books • Shop: https://drgreger.org