2

votes

Does Mercury Toxicity Actually Happen From Eating Too Much Tuna?

Answered on September 12, 2014
Created June 29, 2013 at 10:23 PM

Just as the title says. People talk about it, but I've never heard of people developing symptoms, or being diagnosed with mercury toxicity or anything like that. To me it seems like a bunch of scary hearsay, honestly. Prove me wrong.

As it stands, I'd like to eat a can of solid light tuna a day. Maybe two. Is that so wrong?

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 08:53 PM

Wow, alligator. He's a Paleo naturopath, does that redeem him?

3a9d5dde5212ccd34b860bb6ed07bbef

(1782)

on June 30, 2013
at 07:19 PM

Minus one for referencing a naturopath.

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 05:32 PM

Here's one anecdotal story http://www.nypost.com/p/news/local/manhattan/had_tuna_meltdown_rQBVzvEAy7XP7gxIxqul2J#ixzz12uhLSjO7 Also actory Jeremy Piven apparently got it from eating sushi every day.

72cf727474b8bf815fdc505e58cadfea

on June 30, 2013
at 05:10 AM

Unless someone eats fish from extremely polluted water (like, toxic waste dump polluted), they're not going to show he kind of acute mercury toxicity that would show up in a newspaper or a textbook. The concern is about subtle, gradual harm to your health as mercury accumulates over years.

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 01:14 AM

Matt, I hear you, and it's hard to know what to believe. But it's not all that far different from Paleo in that respect. Whatever symptom you may have, someone on this site will tell you to eat more x or y...

194d8e8140425057fe06202e1e5822a7

(3979)

on June 30, 2013
at 12:18 AM

Here's the thing. When I eat generic tuna, I feel LESS depressed, LESS fatigued, more mentally clear, in comparison when I eat more so called safer fish. I still don't buy it. Have you any studies that show a direct correlation between mercury consumption *through fish* and elevated mercury levels in the blood? So far I see no proof.

194d8e8140425057fe06202e1e5822a7

(3979)

on June 30, 2013
at 12:17 AM

Because fish is the only protein source my rheumatoid arthritis-addled body will tolerate, and tuna gives me the most energy, out of mackerel, salmon, sardines, anchovies, and other fish.

32f5749fa6cf7adbeb0b0b031ba82b46

(41747)

on June 30, 2013
at 12:07 AM

Naturopathy is funny. It seems like every ailment you can have they've got dozens of things to try to fix you up. What a scheme! ;)

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3 Answers

2
5661757f5a7ad1d09c44d7b3ce9b533f

on June 30, 2013
at 06:07 PM

http://chriskresser.com/is-eating-fish-safe-a-lot-safer-than-not-eating-fish

  • Selenium protects against mercury toxicity, and 16 of the 25 highest dietary sources of selenium are ocean fish

    If a fish contains higher levels of selenium than mercury, it is safe to eat

    Most species of commonly eaten fish in the U.S. have more selenium than mercury

    Fish are not significant sources of PCBs and dioxins when compared to meat, dairy or vegetables

    The benefits of eating fish regularly far outweigh the potential risks, which are neglible

    Pregnant mothers and young children should eat 2-3 servings of oily ocean fish each week

The conclusion is obvious: fish should be a part of our diet. But is it safe to eat fish?

You might be surprised to learn that the answer is a resounding yes. In this article I???ll demonstrate that concerns about toxins in fish have been overblown, and that there is almost no risk associated with eating fish when a few simple precautions are taken.

The above are just excerpts; read the whole thing at the link.

0
F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 29, 2013
at 11:51 PM

My naturopath is really, really concerned about heavy metals toxicity from things like mercury and lead. He doesn't want me eating any farmed fish. He studied under Dr. Crinnion - here's some stuff I pulled from his website, drcrinnion.com on mercury specifically:

MERCURY

Mercury ??? Mercury is another one of the heavy metals that is found in all persons tested. Mercury comes in various forms: elemental, organic and inorganic, all of which are toxic. The two biggest sources of mercury are fish, containing methylmercury (an organic form), and dental amalgams containing elemental mercury. Candida albicans and other intestinal flora can methylate elemental mercury leading to higher methyl mercury levels in the body. The half-life of elemental mercury in the blood is 50 days, while organic mercury takes 70 days to reduce itself by 1/2. The greatest stores of mercury in the body are found in the kidney, liver, GI tract and the brain. The half-life of mercury in the brain is 20 years.

Current Sources of Mercury

  • Mom ??? placental transfer

  • Dental amalgams

  • Fish ( shark, swordfish, king mackerel, tuna, orange roughy, marlin, Chilean bass, lobster, halibut, snapper)

  • Skin lightening creams

  • High fructose corn syrup (and foods with high levels of this product)

  • Elemental mercury from broken thermometers or other sources

Health Problems Associated with Mercury

  • Kidney problems

  • Depression

  • Anger, Irritability, Mood Swings

  • Insomnia

  • Infertility (male and female)

  • Tremors

  • Autoimmunity

  • Low thyroid

  • High blood pressure

  • Fatigue

  • Hair loss

  • Cognitive difficulties

  • Muscle aches

  • Headache

Agents PROVEN to mobilize mercury from the body:

Dimercaptosuccinic acid (DMSA) this oral agent is safe and effective for the mobilization of mercury from the body at the body-weight dose of 30mg/kg/day (typically used as 10mg/kg three times daily). This has been safe and effective even for children as young as 12 months of age. DMSA is also quite effective for mobilizing lead (for which it has a higher affinity than mercury)

2,3-Dimercapto-1-propanesulfonic acid (DMPS) is available both as an injectable and oral agent that is both safe and effective for the mobilization of mercury and arsenic. DMPS also moves lead to a small extent.

Chlorella & Cilantro are commonly used for this purpose but have failed to show any evidence of effectiveness in all the trials that have been done.

Whichever of these agents is chosen, should be used as part of a complete protocol with nutrient support, avoidance of current exposure, nutrients to protect the kidneys and reduce hepatic and renal recycling of lead.

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 01:14 AM

Matt, I hear you, and it's hard to know what to believe. But it's not all that far different from Paleo in that respect. Whatever symptom you may have, someone on this site will tell you to eat more x or y...

194d8e8140425057fe06202e1e5822a7

(3979)

on June 30, 2013
at 12:18 AM

Here's the thing. When I eat generic tuna, I feel LESS depressed, LESS fatigued, more mentally clear, in comparison when I eat more so called safer fish. I still don't buy it. Have you any studies that show a direct correlation between mercury consumption *through fish* and elevated mercury levels in the blood? So far I see no proof.

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 08:53 PM

Wow, alligator. He's a Paleo naturopath, does that redeem him?

3a9d5dde5212ccd34b860bb6ed07bbef

(1782)

on June 30, 2013
at 07:19 PM

Minus one for referencing a naturopath.

32f5749fa6cf7adbeb0b0b031ba82b46

(41747)

on June 30, 2013
at 12:07 AM

Naturopathy is funny. It seems like every ailment you can have they've got dozens of things to try to fix you up. What a scheme! ;)

0
C2450eb7fa11b37473599caf93b461ef

on June 29, 2013
at 10:48 PM

I've read anecdotal stories of people getting mercury toxicity from tuna, but haven't known anyone in real life.

Just saying, but that seems like a lot of tuna to me. I personally wouldn't eat that much, and I'd definitely switch to Skipjack, which is lower in mercury.

Why take the risk that you'd give yourself brain damage?

F92e4ca55291c3f3096a3d4d3d854986

(11698)

on June 30, 2013
at 05:32 PM

Here's one anecdotal story http://www.nypost.com/p/news/local/manhattan/had_tuna_meltdown_rQBVzvEAy7XP7gxIxqul2J#ixzz12uhLSjO7 Also actory Jeremy Piven apparently got it from eating sushi every day.

194d8e8140425057fe06202e1e5822a7

(3979)

on June 30, 2013
at 12:17 AM

Because fish is the only protein source my rheumatoid arthritis-addled body will tolerate, and tuna gives me the most energy, out of mackerel, salmon, sardines, anchovies, and other fish.

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