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: New research suggests that multivitamin use may significantly increase the risk of breast cancer and prostate cancer. Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/videos/multivitamin-supplements-and-breast-cancer/ and I’ll try to answer it! Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. Be sure to check out the other videos on breast cancer (http://nutritionfacts.org/topics/breast-cancer/). Also, there are 1,449 subjects (http://nutritionfacts.org/topics/) covered in my other videos–please feel free to explore them! Image Credit: gvictoria via Shutterstock and Bradley Stemke via Flickr. 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