Ask the Doctor

Answers to featured health and nutrition questions provided by Michael Greger M.D. Questions are taken from the video and blog comments throughout the site. Join in the discussion and get your question featured!

Where can doctors go to supplement their nutrition knowledge?

I’m afraid I’m one of those guilty docs who never filled in the nutrition knowledge gap that medical school left me with. NutritionFacts.org has been such an eye-opener, and I am already seeing..

Does caffeine impair endothelial function in our arteries?

Hello Dr. Greger. Latest in nutrition Volume 8 was a fantastic DVD. It was very informative and applicable to my lifestyle. I especially liked the healthy ice cream idea, I’m going to try that! I..

What about the oxalic acid in beets?

What about the oxalic acid in beets? Is it good for you to take in large amounts?

Is hempseed oil beneficial to adults with eczema?

I’d be interested in your opinion of this study I found online at http://www.finola.com/FinolaOilandAtopy.pdf. This is regarding hempseed oil, not necessarily for children but for adults with..

What is the healthiest potato?

What’s the verdict on gold, red & purple potatoes?

Should we avoid celery to prevent colon cancer?

Class participant heard that celery should be avoided for colon cancer patients. Only thing I’ve read about celery is to consume only ‘organic’ as conventional grown veggie is extremely high in..

Should we avoid canned tomatoes and non-organic root vegetables?

I’ve seen a number of blog posts about some food scientists stating that if you avoid ANY food, canned tomato products and non-organic root vegetables should be at the top of your list? Do you..