Ask the Doctor: Q&A with Dr. Greger

Answers to featured health and nutrition questions provided by Michael Greger M.D. and Joseph Gonzales, R.D..

Questions are taken from the video and blog comments throughout the site. Join in the discussion and get your question featured!


Q: Which foods have the most potassium?

Beet Greens

can you provide a link to the data on potassium levels of various foods? Charlene / Originally Posted in Potassium and Autoimmune Disease Answer: The new USDA National Nutrient Database for Standard Reference is now out! Our tax dollars hard at work to analyze the nutrient content of more than...

281
SHARES
shares /

Q: Do microgreens have more nutrition?

3012744813_df20402967_b

What about microgreens? vetstud  / Originally Posted in Antioxidants Sprouting Up Answer: USDA researchers recently published a study assessing the nutrition content of 25 commercially available microgreens, seedlings of vegetables and herbs that have gained popularity in upscale markets and...

24
SHARES
shares /

Q: Any update on the scary in vitro avocado data?

1244px-Avocado_open

any updates on avocados in vivo? Toxins  / Originally Posted in Are Avocados Bad for You? Answer: I'm happy to report that a new study this year found avocado consumption associated with significantly reduced prostate cancer risk (a third cup of avocado a day or more associated with 60%...

27
SHARES
shares /

Q: What do you drink, Dr. Greger?

5298931174_873a32a877_b

Dr. Greger ~ Are you still drinking that yummy Hibiscus Tea? (I did not see it in your "morning mix"!) Kenton R. Mullins  / Originally Posted in A Better Breakfast Answer: A half gallon a day Kenton! I no longer do the teabags, though, but the bulk dried hibiscus flowers themselves (why...

64
SHARES
shares /

Q: What are “normal” human vitamin D levels?

Gossiping and sunbathing on the beach

I assume the lifeguards were caucasian? With a “built in” SPF of 15 what blood level of Vit D does the lifeguard of African descent attain? Perhaps that is a better clue for evolutionary “normal”.CapeBreton / Originally Posted in Evolutionary argument for optimal vitamin D...

2
SHARES
shares /

Q: What do you think of durian fruit?

Durian Fruit

Dr. Greger, have you ever eaten a durian fruit? They are so fascinating, though I’ve never seen a real one.Kevin McCaffrey / Originally posted on the NutritionFacts.org Facebook page Answer: Durians have to be the most badass of fruits. Imagine a 5 pound football covered in sharp spikes...

41
SHARES
shares /

Q: Are neurotoxins only present in blue-green algae?

Fish Oil Capsules

As you have reported, the effects of animal based omega-3 supplements can prove to be ironically, inflammatory. While you recommend utilizing algae as an alternative, is there concern over the neurotoxins (as you have discussed in other videos as present in spiralina), or are these only present in...

2
SHARES
shares /

Q: Nutrition advice to counter the side-effects of glaucoma medications?

Glaucoma

Is there any information that can help with glaucoma. The drops are sight saving. what nutritionally can counter any side effects of glaucoma drugs such as cosopt.Harmony / Originally posted in Algae-Based DHA vs. Flax Answer : A review of complementary and alternative treatments for...

1
SHARES
shares /

Q: What are the benefits of reishi mushrooms (Ganoderma lucidum)?

Green Tea with Red Mushrooms

I have just been introduced to a product that is a combination of green tea and ganoderma (a red mushroom). It also comes mixed with coffee. I was wondering if you have seen amy research on ganoderma. Thank you so much for this website. It is wonderful!mpbailey / Originally posted in The...

3
SHARES
shares /

Q: What about gurmar, jamun, bitter melon, and fenugreek?

Gurmar, Jamun, Bitter Melon, and Fenugreek

What is your take on the following substances? Gurmar…jamun… bitter melon…[and] fenugreek?   Lastly, Dr. Greger what do you think of Citruline and L Argenine in their role as helping out in repairing the endothelium cells ( Citruline ) and the later helping in promoting Nitrous Oxide...

7
SHARES
shares /

Q: Is yerba maté tea really bad for you?

Is Yerba Mate Bad

Whoa! Really?! It seems there must be a lot of problems for the South Americans who consume loads of this daily? I haven’t read anything negative — any other info on how this is affecting people who have been drinking it for years?Poxacuatl / Originally posted in Is Yerba Maté Tea Bad For...

12
SHARES
shares /

Q: How did you do the mercury fillings and canned tuna calculation?

Mercury in Fillings and Canned Tuna

How did you come up with your calculation about how many mercury-containing dental fillings are equivalent to eating a can of tuna once a week?vetstud / Originally posted in Amalgam Fillings vs. Canned Tuna Answer: Three national brands of canned tuna were recently tested for mercury. They...

12
SHARES
shares /

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...

30
SHARES
shares /

Q: What are the best foods to decrease seasonal nasal allergies (rhinitis)?

Nasal Allergies

What would you recommend for nasal allergies? Hubby and I are both on a plant based diet and our allergies are better since going vegan, but it’s spring & it’s bad this year already lol. veggiechick / Originally posted in Preventing Allergies in Adulthood Answer: Oh, I’m so sorry...

221
SHARES
shares /

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?mercman40 / Originally asked in The Best Nut Answer: Almond milk is certainly superior to calf’s...

75
SHARES
shares /

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...

0
SHARES
shares /

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?azwildcat76 / Originally posted...

5
SHARES
shares /

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...

25
SHARES
shares /

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 :(Amy Freudenberg Dover...

7
SHARES
shares /

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...

3
SHARES
shares /
Page 212345