Is Fish “Brain Food” for Older Adults?
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Is Fish “Brain Food” for Older Adults?

January 12, 2020


  • Reply randomstranger001 June 10, 2016 at 12:26 pm


  • Reply randomstranger001 June 10, 2016 at 12:26 pm

    I was first one to comment

  • Reply zukodude487987 June 10, 2016 at 12:32 pm

    Got seafood?

  • Reply Randy Lantz June 10, 2016 at 12:35 pm

    Good point. Do we really want to eat this stuff? … Not

  • Reply Jamie Lovelyday June 10, 2016 at 12:37 pm

    Ah, this is very interesting. I was thinking about this subject the other day. Seems to me that the food industries are just out to make a profit.

  • Reply Vegan Gardener June 10, 2016 at 12:38 pm

    Vegans – Proud to be deficient in mercury

  • Reply star666moon June 10, 2016 at 12:44 pm

    what if you avoided large predatory fish that have lots of mercury accumulation from the food chain and ate mostly smaller fish with less mercury? Would there be a benefit between omega 3 and brain function then if you eliminate mercury from the picture?

  • Reply Herv3 June 10, 2016 at 12:49 pm

    what is Omega-3 PUFA?

  • Reply SeaMonkeyLad June 10, 2016 at 12:54 pm

    Do any of us really have "ample cognitive reserve"? I feel like I want every last % I can squeeze out.

  • Reply purewonka June 10, 2016 at 12:54 pm

    Every adult I know over the age of 60 is taking fish oil supplements. I try to tell them it's doing them no good and likely harming them. They ignore me and say that their doctors recommend it.

  • Reply NatalieArones June 10, 2016 at 12:57 pm

    I've been vegan for 5 months now, and never going back because I feel so good without having any animal products inside my body. just wondering how does the fat from fish specifically affect cognitive development? I see the results but I want to understand how the fatty acids from fish affect the brain? informative video 😃

  • Reply _gongster June 10, 2016 at 1:08 pm

    No flesh nor animal food is brain food. GO VEG.

  • Reply Doug bananaboy June 10, 2016 at 1:18 pm

    Please Do video on Magic mushrooms on depression treatment

  • Reply Doug bananaboy June 10, 2016 at 1:21 pm

    Leave the fish in the ocean

  • Reply TheAtheistPaladin June 10, 2016 at 1:30 pm

    Is Mercury a "brain food" ?

  • Reply Mr. Quiltworth June 10, 2016 at 1:37 pm

    I saw the title to this video and I just knew vegans would be trolling the comment section

  • Reply Reverend Al June 10, 2016 at 1:43 pm

    Muy pescado!

  • Reply Dan D June 10, 2016 at 1:48 pm

    don't buy fish oil it kills fish. You can get all of your omega 3's from hemp seeds,chia seeds, flax oil, also algae

  • Reply Crimson twelve June 10, 2016 at 1:50 pm

    What about vegan omega-3 from algae? Is vegan omega-3 safe and mercury free?

  • Reply DaGingerHeadMan June 10, 2016 at 2:14 pm

    Dr. Crazy has an agenda, don't eat flesh.
    His Granny was dying of heart disease at 65, couldn't walk 10 feet without angina pain.
    Two weeks a vegan and Granny was walking ten miles a day.
    Granny lived for 30 more years, and Dr. Crazy is not a liar.

  • Reply jmarylastone June 10, 2016 at 2:22 pm

    hmmm, I never could stand the taste of salmon and the infamous tuna bake so many loved has never been cooked by me – but to think my beloved shrimp might be my downfall is scary

  • Reply Lichtblick June 10, 2016 at 2:27 pm

    i will never take fish oil ever again

  • Reply Spencer Nagle June 10, 2016 at 2:29 pm

    Have you seen studies re: "Should people with mercury containing dental fillings have them removed? Is there risk of spreading mercury systemically when removing the tooth?"

  • Reply Leonardo Da Vinci June 10, 2016 at 2:32 pm

    It's not just the Mercury though…there's all sorts of other junk in fish that's toxic to the human body.

  • Reply Armando Cornaglia June 10, 2016 at 2:46 pm

    What about in areas or places where fish has been a primary staple? Such as say in Alaska. Are their bodies just not metabolizing all the mercury due to exposure or better fish? For instance what about tuna?

  • Reply Michael Janavel June 10, 2016 at 3:03 pm

    Just as well since fish stocks are declining world-wide.

  • Reply Benzo Stanbury June 10, 2016 at 3:12 pm

    Although modern fish has various levels of contaminants like mercury, PCBs, and dioxin, they also have beneficial omega-3 fatty acids, iodine, and selenium. And yet, there might be more to fish than these nutrients, because some studies have found that people who eat fish gain benefits, such as increased brain volume, that are not matched by taking fish oil supplements [3]. Perhaps this is because fish also contain zinc, selenium, and DMAE, which are not found in fish oil supplements. I currently think that eating fish up to twice a week is probably more helpful than harmful, provided it is of the low-contamination variety. Indeed, every single source on the internet that I’ve encountered that collectively forbids all types of seafood have coincidentally promoted veganism. For example, compare the opinions of the American Heart Association (not vegan) [12] and Harvard School of Public Health (not vegan) [13] with the opinions of PCRM (vegan) [14] and (vegan) [15]. I'll occasionally eat Alaskan salmon, trout, sardines, and arctic char, all of which are low-contamination. Most shellfish are also alright health wise if they are specifically from non-polluted water, but I personally don’t enjoy their flavor. All other types of seafood are discouraged. Sustainability is a major issue regarding seafood, and I trust for addressing this issue.


  • Reply meow0meow7 June 10, 2016 at 3:21 pm

    What about algae oillllllll

  • Reply The Audio Man June 10, 2016 at 3:36 pm

    Great video thank you. Can you tell me if there is any proven mechanisms to reverse mercury/pollutants (with research references) which may have been caused by fish oils? I fear many of us that listened to the wisdom of the time may have already been poisoned!

  • Reply TheAltruismActivist June 10, 2016 at 4:01 pm

    Risk factor #1 is high blood pressure, and risk factor #11 is too much sodium. What's the disconnect? How much or how little does sodium intake affect blood pressure?

  • Reply SulforaphaneMeUp June 10, 2016 at 4:05 pm

    What about flax seeds, are they beneficial and in what way? Also, what is the difference between the different colors like golden vs white vs dark?

  • Reply GoustiFruit φ June 10, 2016 at 4:25 pm

    Time for Djokovic to stop eating fish !

  • Reply Nguyễn Viết Đức June 10, 2016 at 4:54 pm

    Great thanks Dr.Greger.

  • Reply ashley 5827 June 10, 2016 at 5:02 pm

    Disappointed in the bias in this video. Every other health organization recommends eating two servings per week of low contaminated fish for omega threes (dha). The evidence supports the idea that eating them FAR outweighs the cons of the very small amount of contaminants in these types of fish (Alaskan salmon, sardines, herring, etc). Dr. Greger should mention this at the end of the video, and leave it up to the viewer to decide whether they want to get their dha from fish or supplements.

  • Reply Michael Campion June 10, 2016 at 6:01 pm

    Do a video on cherries. It will go well with your cherry picking. You were actually pretty good a couple of years ago but sadly you have become so irritating with your pro-vegan mantra that you are rapidly losing respect. Deluded.

  • Reply Angryconsumernerd June 10, 2016 at 6:02 pm

    I am a Vegan but I have a hard time denying the benefits of fish consumption especially given that Japan and especially Okinawa have the longest lived most cognitively functioning aged population how do you explain this Dr.Greger ??

  • Reply Jake Smith June 10, 2016 at 6:35 pm

    Fish is gross and it smells like fish!

  • Reply tyrone james June 10, 2016 at 7:01 pm

    OF COURSE those wealthy individuals would have cognitive impairment. They were eating large fish like tuna, swordfish and shark, and lots of it I might add. What about the smaller fish? And I didn't see salmon btw…

  • Reply Rex Murray June 10, 2016 at 8:52 pm

    I love it how he cherry picks studys…every on needs to listen to Dr Jack Kruse. Especially Dr Greger so he dosnt spread his bias

  • Reply Dr. Thomas J. Lewis June 10, 2016 at 9:01 pm

    Evidence BIASED medicine by a faux doctor. He has NEVER treated a human…… It's easier to be fooled than to admit you have been fooled. Please take a look at Colin Campbell today…. may you Gregerphiles enjoy similar decay…. OR smarten up. I sincerely wish you the latter.

  • Reply Rex Murray June 10, 2016 at 9:05 pm

    I feel way better for upping my oyster and sardine intake. Almost like my brain had been dead for years….add omega 3 and wouldn't you know it…better brain function. I wonder if he has read the study where omega 3 is the only lipid to lower heart desease…probably not. I wonder if the fact that the japanese had the best heart health in the world until the U.S. started sending their food over, the reason? A diet rich in seafood and seaweed (omega 3, Iodine, selenium (which is the buffer for mercury accumalation in the brain). But if you live in the states your definetly fucked. your waters have had it. And keep your nuclear war ships out of New Zealand waters, or there will be trouble lol

  • Reply Alisatir Pace June 10, 2016 at 9:50 pm

    so……. just eat plants…..?

  • Reply 59seank June 10, 2016 at 9:57 pm

    It's ironic that the next YouTube recommended video is "Doctor Reviews Fish Oil is the Best Food for Brain, Heart, and Joint Health". Why is getting human nutrition guidance so damn confusing? Black is white, up is down, and good is bad. There is no consensus, just polar opposites. Yes, I'm frustrated.

  • Reply T. Thomas June 11, 2016 at 12:05 am

    Bill Gates said chicken is healthy. He is also the one who said based on his funded studies people need more fruit. I think you need to include a study of the postiive effects of meats. Argue the other side. Or not cherry pick studies.

  • Reply wizz tzab June 11, 2016 at 1:05 am

    Good Day, Uh… what about Molecularly Distilled Omega-3 Fish Oil supplements ? That would be Long-Chain Omega-3 without any heavy metals. I understand that it is way too hard for the elderly to convert Short-Chain Omega-3 from plant sources to the usable Long-Chain Omega-3 format for health needs. Please kindly advise. Thanks!

  • Reply Nayr747 June 11, 2016 at 2:16 am

    Wait, didn't you do a lecture recommending that vegans consume omega-3 from flax seeds because of some studies showing cognitive decline in some vegans who were low in omega-3?

  • Reply Zandre Lord June 11, 2016 at 6:59 am

    What about salmon? As far as I know they have pretty low concentrations of mercury but are also very high in DHA/EPA.
    Keep up the good work! 🙂

  • Reply White Kita June 11, 2016 at 7:27 am

    Fish is one of the most toxic things and should never be eaten….

  • Reply Turtlefoot69 June 11, 2016 at 7:52 am

    Not fish but Essential fatty acids. We can get from all from plants and in much more bio-available form too 🙂
    Marine Phytoplankton, Hemp seeds, flax, chia, and many many more.

  • Reply Milelu June 11, 2016 at 5:40 pm

    Dr. Greger, since I've read your book, I've changed my diet and now, a lot of people tell me, that I might have orthorexia nervosa. That's when you care too much about eating healthfully. What do you think about it?
    It's true that I care a lot about what I am eating and I often chose NOT to eat some things because they are unhealthy. But maybe this can be too much? But on the other hand, why shouldn't I care about my diet? Why is it wrong NOT to chose candy? That doesn't make sense to me.
    Another thing is, that I started to judge other people, when I see them eating unhealthy.. I don't tell them, but I just tell myself: "they're going to get a heart attack" :/

  • Reply Bourne Accident June 11, 2016 at 10:00 pm

    If fish weren't full of mercury, would they be a good food source?

  • Reply Johnny9ball June 12, 2016 at 1:38 am

    Excuse me can someone please explain me how you measure executive function in an individual. Some of these studies results are purely pulled out of someones ass. I love fish though. Eat it 5x a week and never felt better than I do today.

  • Reply Lindemann June 12, 2016 at 3:47 am

    Hmm, so the REAL culprit is actually MERCURY intoxication, right ?!

    Correlation does not equate to causality, don't be stupid: blaming the fish would be equal to blame veggies when they actually are "treated" with toxic poisons such as glyphosfate.

    I'll keep eating my sardines that are not loaded with mercury, since unfortunelly most of other big fishes are either farmed or/and contaminated.

    Fish oil suplements are also trash most of time since they are contaminated and oxidated; the one doctor Mercola sells is mercury free and fresh, or, just use cold extracted krill oil wich is even better in many aspects.

    I hope this was helpful. Have a nice day.

  • Reply david dawes June 12, 2016 at 4:48 am

    Any chance of making a special video on Ketosis?

  • Reply B Jamin117 June 12, 2016 at 7:53 am

    so then where do you get the omega 3 and dha?

  • Reply Random Acts of Video June 13, 2016 at 4:40 am

    You don't need to eat fish to get omega-3.

  • Reply 1too3fore June 13, 2016 at 7:08 pm

    Sardines don't have those issues. Tried vegan diet but then developed allergies to gluten and high FODMAP foods. Very challenging to get enough protein when you eliminate all those food groups without eating animal proteins.

  • Reply SR Joly June 15, 2016 at 2:17 pm

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  • Reply SR Joly June 15, 2016 at 2:19 pm

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  • Reply Cosmic kitty June 15, 2016 at 3:42 pm

    Holy shit thats terrifying. So lucky I became vegan early in life.

  • Reply bulbadox June 16, 2016 at 12:21 pm

    its a bad idea to eat anything that comes out of centuries of trash and oil spills.

  • Reply tebennett1 June 27, 2016 at 8:00 pm

    Sounds interesting but how can you objectively determine a 5% drop. How as the drop quantified? I'm a little skeptical because of the amount of fish Japanese ad Koreans eat and they're some of smartest people living. "Me thinks" your study is flawed

  • Reply Gerry Gold June 30, 2016 at 8:36 am

    Question. When taking fish oil such as Cod Liver Oil. Will that have the same negative affect as the sea food intake to cause cognitive disfunction? ?? Please get back to me. Should I throw out my Cod Liver Oil Suppliments ?..

  • Reply TestingU 4Research July 24, 2016 at 3:18 pm

    Is there a fish without mercury? As mercury is not inherent in a fish's makeup, but rather a byproduct of environmental pollution wouldn't an easy fix be fish that is farm raised in a controlled facility free of mercury?

  • Reply strpwnr3 December 21, 2016 at 7:54 am

    Love your channel, but I'm sad to see the harsh bias you got against seafood altogether. You didn't say anything about smaller fish, sardines for example, and how they are extremly low in mercury, and they are very high in B12, DHA and AA fatty acids, selenium, vitamin D, and are completely safe to eat. The fact that you went in on the subject of seafood, but only cared to mention the most high-content mercury-filled fish, and nothing about all the lower-chain seafoods such as shellfish, is disappointing.

  • Reply Diss & Dad November 4, 2017 at 8:16 pm

    How can I get DHA and EPA fatty acids if I don't eat fish occasionally?

  • Reply Sophat January 8, 2018 at 3:57 pm

    This was just tuna which is higher in mercury
    What about mackerel and salmon?

  • Reply Jake Miller July 9, 2018 at 11:33 am

    so much speculation. so few demonstratively relevant facts.

  • Reply Ahmed Ahmed August 10, 2018 at 12:45 pm

    If animal products are not good why is that bodybuilders are healthy like dexter jackson, levrone, jay cutler though they eat tons of meat, eggs , fish and chicken

  • Reply James Humphrey November 13, 2018 at 4:38 am

    shiiit – wish i didn't have to eat to survive and stay healthy – thunk of the waste of time, much more than waiting in traffic.

  • Reply Dominique Ford February 20, 2019 at 1:06 am

    but don't help brain cancer like marijuana which is a vegetable

  • Reply Jakob W July 8, 2019 at 3:03 am

    What about fish from ORGANIC FARMS?

  • Reply Jakob W September 10, 2019 at 4:04 am

    Is it SAFE to eat SARDINES and MACKEREL?

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