Doctor's Note

How can nut consumption benefit our cardiovascular health? Learn more:

Exercise is also important for cardiovascular health:

And check out the other videos on heart health, as well as my associated blog post: Eating To Extend Our Lifespan.

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  • Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on heart health. Also, there are 1,449 other subjects covered in the rest of my videos–please feel free to explore them as well!

  • Dr. Greger,

    I wish you’d answer the questions here:

    You say that you’ll answer questions, but you don’t. Why is that?

  • hunniliz

    Is there any advantage to exercising more than an hour per day, or is there a law of diminishing returns at some point. My husband and I walk 7-8 miles per day, 6 days per week. The walks are just over 2 hours. Would we get just as much benefit with a 4-5 mile walk.

  • You’d get many more benefits from resistance training 2X per week.

  • This video is completely ridiculous. Risk does not mean cause and effect. My god.

    • beccadoggie10

      You can wait the rest of your life and cause and effect may not be found. I suggest erring on the side of the precautionary principle when it comes to natural solutions, and ignoring drug propaganda.

  • Girlwholovestheworld

    Dr. Greger,
    I’ve been looking into soaking nuts, I hear this is better for you, do you know much about this?

    •  I haven’t seen studies on soaking nuts. I can’t imagine that water would have an adverse effect on the nutrient value of nuts. I’m always open to changing my beliefs when confronted with good science. Since water is something we require the addition of water to nut should be beneficial. Although as they found out in a radio station contest in Sacramento CA you can die from too much water.

      • Girlwholovestheworld

        Here is one of many websites that said it may be better for us,

        •  Thanks for the link. I enjoyed reading it. I’m not sure the science supports the hypotheses about enzymes and enzyme inhibitors but I was trained as a chemical engineer which makes me a pragmatist not to mention my 35 years in medical practice. If soaking nuts works well for an individual than I don’t care about the mechanism… go for it. Eventually some scientific study might will help explain. Take care.

          • Girlwholovestheworld

            You say you studied medical practice, did that involve nutrition?

          • In my medical school we had a 4 hour course on nutrition plus what was worked into other courses. Of course that was along time ago. The science is difficult to keep up with given the number of articles in nutrition plus traditional medical or surgical therapies. That is what makes Dr. Greger’s website so valuable. It has the articles that he cites available. 

  • Qpbd clean arteries

    why do Ornish and Esselston in the reversal of heart disease, eliminate nuts in the diet, if they are so good for heart health…

    • Richard

      Avoiding heart disease is not the same thing as reversing it which takes a more strict diet. Ornish does not eliminate nuts but limits them…

  • Eric Lindstrom

    Can you help me validate these numbers? I’ve been called out and would love to be more accurate.

    PS – We met at Summerfest this year and your talk blew me away!


    • Joseph Gonzales R.D.

      Risk can vary widely. To say 90% is kind of a lot. Perhaps you could have a decreased by up to 90%? All studies vary and they come up with different percentages, which cannot be taken for face value. The fact is eating while foods plant0based diets significantly reduce risk of heart disease.

  • Jim

    How about lifting or bodybuilding 1Hr. 3to4 times a wk. is this good for the body?

    • Psych MD

      So you are asking if increasing muscle mass and building strength is beneficial? Hmmm…..

  • Had my blood test done and a bit disappointed with my cholesterol levels. My triglyceride was 89.4 (I think that is good). My LDL is 105.7(I think that is good) Total Cholesterol is 151.2 (also ok I think) BUT my HDL was only 40.5 (I think that is bad/way to low). I’ve been eating a whole foods plant-based diet for 2 years with lots of greens and raw fruit and veggies, nut and seeds. I walk over 90 minutes every day and I’m not at all over weight (5 foot 6 and 120 pounds). Before going all plant based I was vegetarian. I really thought my HDL would be great

    • Kentucky RD

      Your TC is fine (and might go even lower if you cut back a little on the plant fats in the nuts/seeds, avocados you’re eating.) HDL is a portion of the Total Cholesterol and therefore you can’t increase your HDL unless you also increase the TC -which is NOT what you want to do. The HDL recommendations assume you have “typical” TC numbers because you eat the Std American diet. Keep doing what you’re doing as far as exercise and low fat plant based diet.

  • Pat

    I’m curious about the serving size for a handful of nuts. Are we talking a 1/4 cup (small handful) or would even a generous handful be ok? I love my nuts and it is not uncommon for me to eat 2 or 3 – 1/4 cup servings a day and I am wondering if I should reduce it? Thanks for any feedback :)

    • Thea

      Pat: I can’t speak to any specific study, but I have always heard a serving of nuts defined as 1 ounce, which I think is about a scant 1/4 cup. As part of Dr. Greger’s daily dozen, he recommends about 1 serving of nuts a day. If memory serves, he (and other doctors) has said in the past that 1-2 ounces a day is OK. So, your 2, 1/4 cup servings is not too far off. But whether 1 or 2 (or three) is best for you in particular, I would ask yourself: What are my calorie needs? and Am I a healthy weight? Nuts are very calorie dense, so eating no more than one serving (or none at all) makes sense if weight is an issue for you. What do you think? PS: I love nuts too.

      • Pat

        Thanks for the quick and helpful reply fellow nut lover Thea!! I’m glad to hear that my 2 servings per day may not be too far off ;) But you raise an important point about the calorie content of the nuts. I do want to reduce my weight some, so I should probably keep it to 1 ( or maybe two :P) – 1 ounce servings / 1/4 cup servings per day. Darn things are just too yummy!

        • Thea

          Yes! Too darn yummy. argh.

  • josiemae

    Hi wanted to ask roasted or raw nuts? Does it matter? Also another poster mentioned soaking nuts and from what I have read most people soak them, then dehydrate them, then eat them. So just curious if any of this matters or not.