Culture Shock – Questioning the Efficacy and Safety of Probiotics

In certain medical conditions, probiotic supplements may actually make things worse.

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This is a link to the video I alluded to: Preventing the Common Cold with Probiotics? (

I also talk about the potential benefits in my videos Preventing and Treating Diarrhea with Probiotics ( and Gut Feelings: Probiotics and Mental Health (

Perhaps it would be safer and more effective to instead focus on fostering the growth of the good bacteria with have by feeding them prebiotics (fiber and resistant starch):
• Prebiotics: Tending Our Inner Garden (
• Boosting Good Bacteria in the Colon Without Probiotics (
• Resistant Starch and Colon Cancer (
• Gut Dysbiosis – Starving Our Microbial Self (
• How to Become a Fecal Transplant Super Donor (
• Microbiome: We Are What They Eat (

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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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