Flashback Friday: Is Fish “Brain Food” for Older Adults?

Why has fish consumption been associated with cognitive impairment and loss of executive function? Subscribe to NutritionFacts.org for free and receive a free …


  1. Aajonus Vonderplanitz already experimented with mercury found in swordfish. If you eat raw swordfish the mercury doesn’t harm you but when you cook swordfish then the mercury becomes extremely toxic. I’ve only eaten 4 lbs of cooked swordfish in my life but I fear even that insignificant quantity has done some damage to me. It wasn’t even worth it because swordfish is much better raw than cooked. The flesh is like cantaloupe when it’s raw. When it’s cooked it’s dry and bland. Remember to always eat raw foods. There are countless toxins produced when you cook food. Modern science has already found many toxins but they refuse to look for more. Heterocyclic amines and advanced glycation end products and lipid peroxides come to mind. The brown crust from cooking is in no way something healthy.

  2. What if one exclusively eats wild caught small oily 🐟, such as sardines and brisling? No large fish, sharks, or other seafood. Such fish have the lowest levels of mercury and other industrial toxins. Any studies?

  3. Hmm, saw a talk with Dr. Longo (like him a lot), and he said the opposite. He's worked closely with older people in the Mediterranean. Personally, I've become less restrictive with my diet (was strict vegan), since I noticed my immune system seemed weaker and getting sick worse and more. I noticed that one study said "wide-mouthed tuna" and a bunch of fish I don't eat, grouper, shark, snapper, bass, and swordfish. No salmon was mentioned. I eat salmon and canned tuna, but very sparingly, maybe twice a week on average, if even that (either 1 can of tuna twice a month and salmon one day of the week).

  4. Same time you have study show benefit on longevity, so we can choose between 5% more life or 5% less brain.. 🙄Maybe the solution is eat fish from the river not from the sea

  5. How about FDA-approved doses of prescription n-3 FA products made from fish oils? My blood test showed EPA DHA levels out of balance but triglycerides are normal. I would not be eligible for prescription medications. Unregulated over the counter pill pushers are not to be trusted.

  6. >>>Investigators assessed dementia-related pathologies, including Alzheimer’s disease, Lewy bodies, and the number of macroinfarcts and microinfarcts. They measured tissue concentrations of mercury and selenium using instrumental neutron activation analyses in a subsample of 203 cases.
    As in prior studies, seafood consumption did not correlate with Alzheimer’s disease outcomes in a linear way, and the investigators only presented findings where seafood was modeled as an indicator variable (ie, one or more meals per week vs less). After adjusting for age, sex, education, and total energy intake, eating one or more seafood meals per week was significantly associated with less Alzheimer’s disease pathology, including lower density of neuritic plaques and less severe and widespread neurofibrillary tangles in APOE ε4 carriers. Brain mercury levels positively correlated with the number of seafood meals consumed per week, but levels did not correlate with neuropathology. “To our knowledge, this is the first study to report on the relationship between brain concentrations of mercury and brain neuropathology or diet,” said Dr. Morris and colleagues. “The finding of no deleterious correlations of mercury on the brain is supported by a number of case–control studies that found no difference between Alzheimer’s disease patients and controls in mercury concentrations in the brain, serum, or whole blood.<<< Association of Seafood Consumption, Brain Mercury Level, and APOE ε4 Status With Brain Neuropathology in Older Adults

  7. Speaking from experience, there is no question whether DHA helps with depression. It does. I'm willing to bet the issue is those studies either weren't using enough DHA or they were using an inferior form (i use a liposomal vegan one–conventional liquid DHA is nothing to get excited about in my experience). DHA is amazing!

  8. Fish has reduced cholestrol and increased focus and span …. salmon three time a week is good for heart, brain and pain in joints .
    Japan and medeterrian are high consumption n. Fish and there heart health is better than anybody .
    High carb vegan diet cause inflammation , tiredness , joint pain and foggy ness. I believe good healthy protein like fish is good for you. Using lots of bean and lentil my weight was higher, cholestrol too and cause me hypothyroid …. change to tons of veggies, moderate nuts and sees, salmon and less sugary fruit .
    But I believe diet is also has to suit you.

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