NUTRITION

Do Vitamin C Supplements Prevent Colds but Cause Kidney Stones?

What are the benefits and risks of taking vitamin C supplements?

Subscribe to NutritionFacts.org for free and receive a free copy of Dr. Greger’s Evidence-Based Eating Guide:

Wasn’t that crazy ironic about the kidney stones? What a roller coaster!

What about intravenous vitamin C? I’ve got a whole video series on that:
• Intravenous Vitamin C for Terminal Cancer Patients (
• Vitamin C Supplements for Terminal Cancer Patients (
• The Role of Vitamin C in the Treatment of Terminal Cancer (

If you’re not taking vitamin C supplements for pharmacologic effects, and just want to know how many vitamin C rich fruits and vegetables to eat every day, check out my video What is the Optimal Vitamin C intake? (

Is there anything we can put in our mouth that really might help prevent colds? See my videos:
• Can Gargling Prevent The Common Cold? (
• Preventing the Common Cold with Probiotics? (
• Nutritional Yeast to Prevent the Common Cold (
• Kiwifruit for the Common Cold (

What are the most important things you can do to prevent kidney stones? Look no further than my video How to Prevent Kidney Stones With Diet (

Have a question about this video? Leave it in the comment section at 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 You’ll also find a transcript of 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.

If you’d rather watch these videos on YouTube, subscribe to my YouTube Channel here:

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

Image credit: Kristina DeMuth. Image has been modified.

• Subscribe:
• Donate:
• PREORDER: How to Survive a Pandemic:
• How Not to Die:
• How Not to Diet:
• Facebook: www.facebook.com/NutritionFacts.org
• Twitter: www.twitter.com/nutrition_facts
• Instagram: instagram.com/nutrition_facts_org/
• Podcast :