Ask the Doctor: Q&A with Dr. Greger

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!


Q: Is coconut water good for you?

The Benefits of Coconut Water

I have seen several health experts talk about the benefits of coconut water that comes straight from a young Thai coconut. However, I have read conflicting information about the coconut water one can get in packages (such as Vita CoCo)…These days, coconut water is hugely popular. Is it just...

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Q: Is vanilla almond milk healthy?

Is Vanilla-Sweetened Almond Milk Healthy

How about Almond Milk? Been drinking as replacement for cow milk, love the taste, etc. However, I do buy the Vanilla sweetened flavor…is that bad? Am I taking away from the good of it all?

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Q: What do you think of Dr. Jenkins’ take on paleolithic diets?

Dr. Jenkins and Plant-Based Diets

I was surprised to see you reference a paper by Eaton on so called “Paleolithic nutrition.” These folks are part of a group who argues that we (humans) need to eat lots of meat to be healthy because that is built into our genes…..despite the overwhelming evidence that eating less (or no) meat...

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Q: Do beets fight cancer?

Improving Health with Beets

As an endurance athlete I thought that beets/beet juice was my little secret but now you’ve let the cat out of the bag so to speak. I am curious if you had any comments on Dr. Ferenczi’s early Hungarian studies on the use of beets/beet juice to combat cancer?

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Q: What’s the best diet for atrial fibrillation?

Diet and Atrial Fibrillation

I started being plant based after Thanksgiving. The principal reason is for my health and hopes to reduce or eliminate some day all my meds. One area that I’ve never seen any reference to is diet and atrial fibrillation. Is there any connection? Can diet begin to replace cumadin or pradaxa?

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Q: My skin is turning orange (carotenoderma)–too many carrots?

Causes of Skin Discolorations

Not necessarily related to beets, but related to how certain veggies and fruit cause skin colorations. My palms and soles of my feet are orange. I know this is from beta carotene. Is it cause for concern? It got better for awhile, but I noticed they are very orange again

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Q: Where can doctors go to supplement their nutrition knowledge?

Where to supplement nutrition training

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 some quasi-miraculous changes in some of my more motivated patients. Where else would you suggest I...

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Q: Does caffeine impair endothelial function in our arteries?

Positive Health Benefits of Caffeine

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 don’t want to pester you with an email, so I thought I'd post it here. In regards to creatine, you...

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