Slashdot Mirror
Is That Sushi Hazardous To Your Health?
pdclarry writes "A recent study by scientists at the American Museum of Natural History and Columbia University found that a piece of tuna sushi may not be tuna at all: 'A piece of tuna sushi has the potential to be an endangered species, a fraud or a health hazard,' wrote the authors. 'All three of these cases were uncovered in this study.' The study, published in PLoS ONE examined 68 samples of tuna sushi purchased from 31 restaurants in Manhattan (New York City) and Denver, Colorado. Some of these were from endangered species, others were not as labeled, and some were not tuna at all. Of these last, five samples labeled as 'white tuna' were from a toxic fish, Escolar, which is a gempylid species banned for sale in Italy and Japan due to health concerns. 'It can cause gastrointestinal symptoms ranging from mild and rapid passage of oily yellow or orange droplets, to severe diarrhea with nausea and vomiting. The milder symptoms have been referred to as keriorrhea [i.e. flow of wax in Greek].' Fraud in sushi is not new; Slashdot also reported study on mislabeling in 2008. This new study shows that some sushi can actually make you sick. The study was also covered by Wired."
If we're just talking about the tuna, then it's Sashimi.
Sushi is vinegar rice, topped with other ingredients, such as fish.
</pedantic>
It must have been something you assimilated. . . .
PLoS ONE, if you didn't know, is a public-access scientific journal publishing enterprise. No more use/abuse of scientists as creator of content AND reviewers of content (who both do this for free) and then only releasing the articles for profit, for the next 100 years. I am thoroughly disgusted by this business model which takes the work of us scientists, gives nothing back and then profits from it. Fuck that.
PLoS ONE, I wish you luck. Please do crush the Natures, Sciences and Elseviers of this world. Pretty please.
"The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
The chances that the fish you eat in sushi is an endangered species in a sushi bar is roughly the same as if you go to any other seafood restaurant. There are a lot of fish in the sea (no shit sherlock) - assume that 0.01% of fish are endangered. Now imagine dragging a net behind your boat. In theory at most 0.01% of all fish in your net will be endangered. Let's look at this more closely: Endangered fish are likely to exist in much smaller quantities, so while there might be 500 tuna per square mile of ocean, there might only be 1 of super-endangered-deliciousfish. Secondly, super-endangered-deliciousfish (SEDF) may only exist in the Bahamas, while the fisherman may be trawling off the coast of Georgia for Tuna, where Tuna are known to be abundant. Your likelyhood of catching a SEDF is highly unlikely.
In any case the fish is dumped in the boat's hold on ice, and then sorted out when they get back to port. Fish are already partially ready for consumption at this point. It's not like fisherman go out in the forest and hunt individual endangered fish with rifles where they can see them. Making most any argument about endangered fish in a commercial fishing situation is completely retarded. The only argument for this is situations where opportunistic overfishing occurs in specific areas like when salmon swim upriver to lay their eggs, and this is already highly regulated.
Also this article came out almost a year ago in the NYT this is old news(!)
moox. for a new generation.
In many Western countries, the health authorities specify that fish served raw must be frozen first to kill certain types of parasite, so what you get in the middle of the country probably doesn't differ much from what you get on the coast. If you go to Japan, they rely on the chefs being trained to recognize and remove the parasites, so you get much better tasting fish and much higher chance of contracting food poisoning due to an untrained chef.
It would be nice to see DECENT aquaculture come to fruition.
Yikes, aquaculture is hard enough to do with fresh water fish. You want to do it with salt water fish? Good luck...
It's one thing to have a salt water aquarium, at a zoo or for a hobby (read: slavery). But aquaculture involves raising fish at incredibly high densities in order to be profitable. These high densities mean that the slightest little change - in dissolved O2, pH, temperature, nitrites, ammonia, etc will kill your fish. Now you want to add salinity which not only has to be kept within limits but corrodes your pumps, pipes and valves, increasing the chances of breakdowns?
No thanks! Have fun!
PS: Fish die really really quietly, and they love to do it in large quantities. I know whereof I speak, I promise...
Seven puppies were harmed during the making of this post.
If only there were an ocean closer to New York. It would be even better if that ocean had tuna of its own. Best of all would be if the tuna there was one of the most delicious varieties around, such that it was the most used tuna for sushi/sashimi. Wow...one can dream.
The poison in Fugu (the only poisonous species that is eaten in Japan) is localised and easily removed by the specially trained chefs who are licensed to prepare it. Escolar has its oil spread throughout the flesh, so for people who are sensitive to it, it is unavoidable.
You say you are a microbiologist... have you ever heard of flash-freezing to kill parasites? I'm a pilot... have you ever heard of air cargo?
"It takes considerable knowledge just to realize the extent of your own ignorance." - Thomas Sowell
I've taken to pretty much completely skipping the tuna when I'm getting sushi - not because of concerns about which fish I'm getting, but because of mercury levels. Since commercial tuna are very large pinnacle fish, they tend to accumulate significant amounts of mercury - much higher than is found in smaller fish such as salmon. There's a nice little article about mercury levels in tuna sushi in NYC from early 2008: High Mercury Levels Are Found in Tuna Sushi (NYTimes January 23, 2008)
fencepost
just a little off
In Japan sashimi is always served in sushi restaurants. A person may say, "Let's go eat sushi" and then at the restaurant end up eating only sashimi. But at a banquet sushi is almost never served. Sashimi on the other hand is virtually always served. A person would never say, "I went to a banquet and ate sushi" meaning that they ate sashimi.
Historically, sushi is a snack food. It's kind of an all-in-one meal since the rice is included in every bite. In a way you can think of it as a sandwich. In western culture, bread was once seen as the most important part of a meal. With a sandwich, you eat the bread with the meal. But you can also eat bread separately with the meal. You can eat a roast beef sandwich, but it would be strange eat a piece of roast beef and call it a "sandwich" simply because you bought it in a sandwich shop.
I understand your point about US usage of words being different. But I think you miss a lot of the Japanese food culture by confusing the terms. There is a lot of sushi that doesn't contain sashimi. In Japan, eating in a sushi restaurant is one of the easiest ways to accommodate vegetarians since there is a large variety of vegetarian sushi. On the other hand, sushi is not actually a very important part of Japanese cuisine. Sashimi is *far* more important. I couldn't imagine eating a high class meal without having sashimi. By understanding the importance of the different kinds of food, I think you will gain a better appreciation for what is one of the world's great cuisines.
But, as always, YMMV.
Freezing only kills some food-bourne pathogens. Parasites are only a part of the story. Camphylobacter needs to be frozen for extended periods of time to see a significant reduction in bacteria count-- probably not long enough from the time the ship catches and freezes the fish to the time it is served. There's a reason why (at least in Massachusetts) all raw food comes with a little warning on the menu.
It's not like this is a new thing, or surprising, though. People have been catching all kinds of nasty things from raw seafood, like Hep A from oysters, for a long time.
It really does not matter. Multiple large fisheries are about to collapse all over the world in the next couple of years (due to overfishing). When they do, it is possible that the world will lose a significant chunk of food.
I prefer the "u" in honour as it seems to be missing these days.
The fish contains indigestible fats; as such, it has about the same effect as eating large amounts of Olestra: it's laxative and leads to oily "leakage".
"The US FDA has warned consumers about potential mislabeling of oilfish [same thing applies to Escolar], but has concluded that any laxative side effects that occur are uncomfortable at worst and pose no health risk."
I'm certain you're joking about the salmonella in common chicken. However, chicken sashimi does exist and is safe, if you get it from the right chicken
I ate some Escolar on holiday in Poland. It is also known as butter fish or something like that. In Poland it wass omething like Maszlanka? I had two very large fillets (smoked) and was told nothing about any side effects. It was delicious - very soft meat and very meaty. I ate it all and then when I got up the next day (early) I got ready to go for a jog. I was wearing very small running shorts. Basically this fish causes a reddish oil to build up in your gut and it seems to be able to leak out whenever it wants. A small early morning fart whilst jogging is enough to empt about two egg cup fulls in one go. It has no smell luckily. I was running in the woods when this happened so I immediately got behind a tree and let the rest of it go, and then cleaned off my legs with some ferns. It lack of odour is quite surprising, given where it has been, and it comes out completely separate from other solids. I didn't know at that point that the fish was to blame. So I bought more on the last day at the Baltic, and took it pack to my in-laws house in Wroclaw. I had some for lunch the next day in their home. That night I was ready for bed, and was sitting naked on the bed, which had been lovingly made up by my mother in law (new white linen all round). My gut had been fine since that earlier incident and for a moment I forgot where I was and let out some gas that felt like it had been building up all day. I felt a dampness, and suddenly the world seemed to close in around me, as I realised what may have happened. I jumped to my feet and saw *loads* of bright red oil all over the white sheets. Sweat just literally started sprouting out of my head as I thought about what to do next... sleep in it? Go and wake the in-laws? At this point (three years ago) I wasn't yet married even, and I had to sleep separately from my (then) girlfriend. They were all asleep already. I ended up sleeping on the other side of the bed. I woke up late, to find my girlfiend standing next to the bed with a look of horror on her face. Why she later married me I have no idea. Needless to say, I haven't eaten any of that nasty but delicious fish ever since.