The reason why women who handle hops start menstruating is because of a phytoestrogen that ends up in beer, called 8-prenylnaringenin (8-PN).

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Check out the thrilling conclusion in my next video: What are the Effects of the Hops Phytoestrogen in Beer? (http://nutritionfacts.org/video/what-are-the-effects-of-the-hops-phytoestrogen-in-beer).

Previous phytoestrogen videos include:
• BRCA Breast Cancer Genes and Soy (http://nutritionfacts.org/video/brca-breast-cancer-genes-and-soy/)
• Flax Seeds & Breast Cancer Survival: Epidemiological Evidence (http://nutritionfacts.org/video/flaxseeds-breast-cancer-survival-epidemiological-evidence/)
• Can Flax Seeds Help Prevent Breast Cancer? (http://nutritionfacts.org/video/can-flax-seeds-help-prevent-breast-cancer/)
• Flax Seeds & Breast Cancer Survival: Clinical Evidence (http://nutritionfacts.org/video/flaxseeds-breast-cancer-survival-clinical-evidence/)

What about GMO soy? See GMO Soy and Breast Cancer (http://nutritionfacts.org/video/gmo-soy-and-breast-cancer/)

Menstrual health videos include::
• Plant-Based Diets For Breast Pain (http://nutritionfacts.org/video/plant-based-diets-for-breast-pain/)
• Flax Seeds For Breast Pain (http://nutritionfacts.org/video/flax-seeds-for-breast-pain/)
• Dietary Treatment for Painful Menstrual Periods (http://nutritionfacts.org/video/dietary-treatment-for-painful-menstrual-periods/)
• Fennel Seeds for Menstrual Cramps and PMS (http://nutritionfacts.org/video/fennel-seeds-for-menstrual-cramps-and-pms/)

Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/video/the-most-potent-phytoestrogen-is-in-beer and someone on the NutritionFacts.org team will try to answer it.


Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at http://nutritionfacts.org/video/the-most-potent-phytoestrogen-is-in-beer. You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.

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

Image Credit: Enokson via flickr.

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