Claire Corlett

Fish Food, Fish Tanks, and More
How Does Mercury Get Into Fish?

How Does Mercury Get Into Fish?

Some vegetarians might claim that fish are
friends not food, I am not one of them. But what if our fishy friends are actually poisoning
us? Hey guys, Julia here for DNews Thanks to recent trends like the mediterranean
diet, fishy meals are having their heyday. Fish seems to be the perfect healthy food,
since they’re packed with omega-3s, which could be good for the heart and some claim
it’s great brain food too. Buuuut there’s always a problem in paradise.
Eating too much fish, might cause a buildup of mercury. Mercury builds up in the bodies
of smaller fish, which gets eaten by bigger fish, so the mercury builds up there, and
then THAT fish is eaten by even bigger fish so they get even more mercury… and so on
up the food chain, this process is called bioaccumulation. So mercury bioaccumulates
in bigger fish like shark or swordfish, which wind up with pretty big doses of the toxin.
But even more common fish like tuna and salmon can accumulate decent doses too. For most people this isn’t a problem, the
benefits from fish far outweigh any negatives. But mercury exposure in pregnant women could
harm the brain and nervous system of a developing fetus. Exposure might be linked to ADHD issues
in their children, according to one study published in the journal Archives of Pediatrics
& Adolescent Medicine. and the FDA recommends that pregnant and breastfeeding women avoid
eating shark, tilefish, swordfish and king mackerel, fish with the highest levels of
mercury. They also recommended limiting consumption of albacore tuna to six ounces per week. So where does all that mercury come from?
It is a natural element found throughout the environment. Some scientists think that it
could be coming from hydrothermal vents. But it’s much more likely it’s thanks to human
activity. We produce a lot of heavy metal waste from power plants and manufacturing
industries. While some safeguards are in place, some facilities have serious leaks or disposal
issues. So heavy metals like mercury get released into the air and then find their way into
water systems and head out to sea. There, the toxin builds up in fish, which
turn the mercury into a toxic form, methylmercury. According to the EPA “Nearly all fish and
shellfish contain traces of methylmercury”. Other animals are affected too, like coral.
Corals are really good at filtering out these heavy metals from the water, unfortunately,
this can also harm them. Just small amounts can kill them. But their deaths may not be
in vain! Corals have given inspiration to a group of Chinese scientists. These researchers
describe their new coral inspired material in the Journal of Colloid and Interface Science.
They made aluminum oxide nanoplates, which have proved themselves to be pretty good removals
of pollutants in past research, but not ideal. So the researchers created their nanoplates
to mimic coral’s structure and the way that they curl. By making a structure that’s
porus like coral it increases the surface area of the coral, making it absorb all that
nastiness so much better! So that could be a cool biomimicry solution
in the future – well, that along with green energy and manufacturing solutions that keep
the oceans from being polluted in the first place. But for now, the FDA recommends eating
at least two meals a week which include fish, just not any of the large species like swordfish. But what about farmed fish – is that a good
alternative or not? Trace explores that question in this video

100 comments on “How Does Mercury Get Into Fish?

  1. I have a question for an episode: If you become fatter, do the dimensions of your bones change? Let's take the hip bones for exampke.

  2. A carbon atom walks up to a helium atom and tries to pick a fight.  Then helium says,your not going to provoke a "reaction" from me, I'm far too "noble". LOLOLOLOL

  3. You eat it because it tastes good, if it tasted like shit, you wouldnt eat it.
    Fish feel pain just like other animals do, they have nervous system, but yeah if you think its right to do it just for fun and your taste buds then do it, i dnt give a fuk.

  4. @DNews so is mercury not toxic or less toxic to fish or is it just too low a concentration to kill the fish?

  5. I hope DNews knows that vegetarians don't eat fish… I hope you guys understand that fish are not vegetables.

  6. Teacher: Are fish friends or food
    Class: uhhhh.. Friends! No food! Yes. Food!?
    Me: Fish are………….[10 hours later] fish. (Monotonously): dun, dun, dun

  7. So wait…What about the effects of selenium on mercury in the body?  Fish are a particularly high source of selenium which is also known to help mitigate the toxicity of mercury.

  8. What about Omega 3 supplements in form of pills? Are they mercury-free or it's just a lazy way to consume Omega 3 and mercury by swallowing shit pills?

  9. Julia's breasts are perky and beautiful , and actually good sized and actually big.

    I am not a pervert or outcast. It is just my honest opinion. It is just complement. Please don't take it the wrong way.

  10. too much Fish?!
    how is that possible?!
    i feel sorry for you Americans ) .;'

    – Greetings from Norway

    if you excuse me i'm gonna make some pasta now

  11. What about GMO salmon, do they contain high levels of mercury? despite the fact that theyre outcompeting the normal salmon into extinction

  12. Eat fish from the bottom of the food chain. Sardines are fine. Tuna and other top predators should be eaten with moderation. The manufacture of equipment used for "green" power liberates some very toxic elements and compounds into the environment to the point that claims it's green are pretty much bogus.

  13. Crayfish or lobsters have the highest readings for Mercury by far! It is so high, that if the public knew just how high it is then it would be banned for human consumption. If you do eat it make it a little bit and not often.

  14. I find it highly unlikely humans are the cause of it. I'm highly skeptical because humans haven't been around long enough to cause the high toxin levels… At least since the beginning of the industrial revolution and human innovations in society.

  15. Since increased levels of Mercury in the human body creates decreased cognitive functioning, I'm just going to outright say I don't trust her saying we can still eat it, since that's coming from a Mercury mind with a whole lot of cognitive dissonance. In the end, you're just safer without it. NO increased level of that heavy metal in your body is going to make you healthier even though she claims the benefits are there, too. Did anyone ever stop to think that we also have Mercury as well as other toxins coming into our body from other sources? It's not just fish, so why ADD to it if you have a conscious choice? It's just a dietary change. She just likes the taste. It's so amazing how much people will brush off facts because they like the fucking taste of animals and their secretions.

  16. I think you have no idea how mercury accumulate in sea and how they end up in smaller fish.All in all I learned nothing here.

  17. Did you know That Mad hatter's disease was caused by mercury poisoning
    Because hat makers back in the day used mercury to extend the brim of hats and the hat makers would get diagnosised with a little bit of mercury.

  18. The ratio of mecury contaminated fish verus non-contaminated is 1-10,000,000
    This video is autistic vegan propaganda.

  19. It’s ok, you have to eat like 20billion to die from it. But our bellies will explode. But honestly don’t drink mercury

  20. Well, just eat spirulina or chlorella before eating fish. Just bc it contains chlorophyll, a compound that binds with and chelates mercury.
    Therefor you're more likely to excrete it while eating one of those superfoods I've mentioned

  21. There are no benefits to fish consumption, unless it is replacing statvation or calories from preserved lard. Fish also contain pcb's, dioxins, cholesterol and hormones. There is no nutrient both exclusive to animal products and necessary for human health. Most fish on supermarket shelves are mislabeled, and if the current demand for fish continues we could see fishless oceans in the next 20 years. Sea turtle and other endangered species bycatch is common. Fishing nets are the largest single contributor to plastic pollution in our oceans. Fish feel pain by the exact same biological mechanism as a dog or a human, and trillions of them are brutally murdered every year. Feeding individuals of unwanted species to pigs or packing them into pellets for farmed fish feed is commonplace. Just go vegan.

  22. Just gave two separate possibilities on how it gets into fish. Didn’t definitively answer the question in the title. She said it could be hydrothermal vents OR human activity/waste.

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