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!

Is cabbage effective against breast cancer?

I have read that new research says cabbage can be good against certain cancers but I don’t remember if breast cancer is one. Both of my grandmothers had breast cancer so I am VERY interested in..

Is thermography better than mammograms for early breast cancer detection?

Thermography is the new early detection method. Check it out.

Does “organic” chicken contain less arsenic?

Are there any risks of excess vitamin B12 consumption?

I have just posted some of your recent B12 videos on facebook to try and help my friends who refuse to accept the need to have an intake of B12 on a vegan diet. Most are convinced their ‘friends’..

How do you achieve a good omega 3 to omega 6 fatty acid ratio?

What would you suggest as an ideal omega 3,6,9?

Isn’t regular cocoa powder healthier than alkali-processed “dutched” cocoa?

In a previous video, it was stated that “regular” cocoa powder was healthier than the processed “dutched” cocoa powder, but this recipe states dutched. I prefer the unprocessed which I..

What is the best way to get vitamin B12?

What would you recommend as far as the best way to get B12 vitamins into our system, supplements? Will any over the counter supplement do? If one were lacto-ovo vegetarian, do they get vitamin B12..