Wakame Seaweed Salad May Lower Blood Pressure

Wakame Seaweed Salad May Lower Blood Pressure


“Wakame Seaweed Salad
May Lower Blood Pressure” I used to think of seaweed as just a
beneficial whole food source of minerals like iodine, for which it is the most
concentrated dietary source. And indeed, just a half-teaspoon of
mild seaweeds, like arame or dulse or two sheets of nori a day should net
you all the iodine you need for the day. But the intake of seaweeds is advised not
only as a whole food source of iodine, but also, evidently, for the prevention
of lifestyle-related chronic diseases. Based on what? Well, you’ll see this
kind of reasoning: The Japanese live long; they eat
seaweed; and so they speculate that seaweed might have something to
do with it based on suggestive reports. But when you see lists like this of all
the supposed biological activities some food has, you want to know
is this is based on clinical data, meaning on actual people, or so-called preclinical data, based
on test tubes and lab animals? When a study like this is published,
talking about the effects of seaweed-reconstructed
pork diets on rats, what do you do with
that information? Seaweed is one of the ingredients
they’re trying to use to improve the image
of meat products. So they try to add grape seeds,
or flaxseeds, or walnuts, or purple rice, or whatever this is.
I had to look it up: thong-weed. How’s that for an image booster? You can look at epidemiological studies,
meaning looking at populations, and indeed, Japanese pre-schoolers
who eat seaweed tend to have lower blood pressures, suggesting
seaweed might have beneficial effects, which would make sense given
all the minerals and fiber. But you can’t prove cause and
effect with that kind of study. Maybe it was other
components of the diet that went along with
the seaweed eating. It’s even harder to do these
kinds of studies on adults, since so many people are on
high blood pressure medications. University of Tokyo researchers
took an innovative approach by comparing the diets of people
on low-dose, versus high-dose, versus multiple blood
pressure medications. And although they all had artificially
normalized blood pressure, those that ate the most fruit and sea
vegetables tended to be the ones on the lower doses, supporting
a dietary role for seaweed. But why not just
put it to the test? A double-blind crossover trial found that
seaweed fiber lowered blood pressure, apparently by pulling sodium
out of the system. I know they couldn’t
use real seaweed, because then you couldn’t
fool people with a placebo, but why not just put whole
powdered seaweed in pills? Which was apparently finally
attempted 10 years later. Compared to doing nothing, they got
beautiful drops in blood pressure. But if you look deeper into the study,
they desalinized the seaweed, meaning they took out about two-thirds
of the sodium naturally found in it, so that still doesn’t tell us
if eating seaweed salad is actually going to help
with blood pressure. What we need is a randomized controlled
trial with just plain straight seaweed, but no one had ever done that study until…
this study out of Ecuador. Six grams of wakame,
natural sodium and all, led to a significant drop in blood pressure,
especially in those who started out high. Side effects were all minor, and what
one might expect increasing fiber intake, and the nice thing about whole
food, plant-based interventions is you sometimes get good
side effects listings as well, such as the resolution of
gastritis—stomach inflammation that they’d been having—as well as
the disappearance of chronic headaches.

45 Comments

  1. Loving the new video format, with you popping up! too cool. I love seaweed, I get the sea vegetable flakes and sprinkle it over my rice and vegetables. it makes everything taste like sushi.

  2. That's some paranormal activity Dr. Greger edition tho at 0:17

    Change in video formats been keeping me on my toes. Never know where he's comin from the bottom corner or the side and now he's just showing up through the middle of the fucking content itself.

  3. Love you Doc. Minh and I don't wait for clinical studies, we eat seaweed (several varieties) because we love it. Minh makes some awesome Wakamie Chips.

  4. Please talk about Vitamin K2. Vegan for a year and a half, never brushed as frequently as I have in the past year and have so many cavities getting worse by the day. I live in Arizona so sun is not a problem I eat at minimum a cup of greens a day and don't eat processed sugar.

  5. Wakame or miyeok (as the Koreans call it) is very popular in Korea. The problem is that, according to an investigation conducted by the Korean government, wakame is found to be the second-highest source of cadmium (see the list below. source http://health.chosun.com/site/data/html_dir/2009/11/03/2009110303559.html). This is not so surprising knowing how polluted the seas are. You are all avoiding fish due to mercury and PCB, right?

    The confusing things is, many personal blogs and newspaper articles encourage the consumption of wakame saying wakame is good for removing heavy metals like cadmium because it absorbs them and then takes it to the outside of body. Of course those personal blogs and articles do not cite any studies or provide any convincing evidence. It is very likely that they just had heard about it from somewhere and posted it without much investigation.

    Of course, the cadmium in wakame may not be lethal dose, otherwise no one would eat it. But I eat it often, the negative effect will be accumulated, which is why those metals are dreadful: once they get into our body, they are almost impossible to remove. If the health benefits could be obtained by eating other foods, there is no need to take the risk by eating wakame. I tried to figure out who was right, but there was not enough information on the Internet. And I could not find any one to ask about it.

    1st: Nori or gim 0.0023mg
    2nd: Wakame or miyeok 0.0018mg
    3rd: Spinach 0.0009mg
    4th: Dried squid 0.0008mg
    5th: Squid 0.0007mg

  6. It would probably make a difference that wakame salad found at sushi restaurants is likely loaded with added sodium, right? Would it still be beneficial?

  7. Simply eating a plant based diet lowers blood pressure naturally as well as cholesterol. Meat, eggs, and dairy clog arteries and lead to heart disease as well as a host of other diseases (type 2 diabetes anyone?). Simply removing the foods from the diet causing the lowered arterial function allows the body to heal itself. Fiber from plants will also help to cleanse and clear out our gut. There is no fiber in meat.

  8. I purchased and am listening to your book. However, I had a question about diabetes and the keto diet. One MD claims it actually treats the disease verse the symptoms so patients have to get off insulin. Which diet is better for diabetics? Keto or plant based?

  9. But no one has ever done that study UNTIL .. (everyone is expecting: NOW. – but instead:) the study out of Ecuador.
    Dr. Greger trolling. 😊👍

  10. I was a bit skeptical of these new Dr. Greger appearances in videos. But this one makes it All worth it! In fact, I stopped watching so I could comment! So funny how he munched off the seaweed during the end as it faded out. hahahaha!!!

  11. As long as it contains added sugar in store bought wakame salad, it’s not gonna help your health. Cook your own food is the way to go. We tend to think to find time to do things but actually we should make time to do things that matters to us. “No time” is an excuse. Not on my top priority is the reality.

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