Tuna

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i know tuna has alot of protein in it but is there anything bad 4 in tuna?? cus i have been eating it to get some of my protein

Tuna usually contains some small amount of mercury, so it's better not to eat it every day, especially if you're a pregnant woman.

Actually, I've heard that you shouldn't eat a can of tuna more than about once or twice a week. They're a carnivorous fish and experience the bioaccumulation affects of being high on the food chain. Trace amounts of mercury collect in phytoplankton, which are consumed in mass by zooplankton, which are consumed in mass by smaller fish, which are consumed in mass by tuna (or a fish below it, then tuna). You then get these higher levels of mercury in carnivorous fish which is a heavy metal and is hard on the liver and has some awful effects on mental capacity. Now, the levels aren't very high, but I wouldn't want to eat tuna every day like some bodybuilders do. You can thank us polluting the oceans for that btw, so remember that the politicians more interested in corporations than in environmental health are one of the primary causes.

I pretty sure that what RobBob said is correct. Heavy metals don't affect everyone the same way, and there are differences in how they're absorbed, etc. It could have an imperceptible effect, a barely perceptible. Who knows? Maybe if you got a 3.6, without the mercury exposure, you would have gotten a 3.65 or a 3.8?If Stephen Hawking had consumed a lot of mercury, he would still be a very smart guy.

So much for my mercury hypothesis.

I said mercury can have those effects so no need to take it as an insult. As a matter of fact, I know a person who eats fish from a nearby river in which the fish have very high mercury levels. Talking to him it's apparent that he's very slow and seems a little impaired. Could be for other reasons, but I'm saying things the way they are. Do you want to take back that carnivorous fish have mercury and that mercury has potentially impairing effects? because I'd be lying if I said the opposite.

Now that's the question isn't it!? How much does it take before it gets to be a problem. I know the recommended maximum levels to be safe, once or twice a week, but it's difficult to do studies on these sorts of things since they involve the long term affects of toxic compounds on the human body. Now I believe that the warnings for not eating tuna every day are very valid, especially since tuna is a very large carnivorous fish thus being exposed to a great degree of bioaccumulation in the ecosystem.If this is going to become a debate then here's the evidence and support:http://www.news-press.com/apps/pbcs.dll/article?AID=/20060711/NEWS0105/60711025/1075http://www.consumerreports.org/cro/food/tuna-safety/overview/0607_tuna_ov.htmhttp://www.truthout.org/cgi-bin/artman/exec/view.cgi/34/9851Now something very interesting I read and I'll follow this up later. Judging by the nature of the site, I'd also account this to be the most trustworthy and it really supports your argument as to not adversely affecting people too much in the low concentrations it's found in.http://www.sciencedaily.com/releases/2003/05/030516082905.htmNow I'm not going back and rewriting anything but I thank you for telling me to look up the information because it had been a couple years since I last did. Anyone else care to bring up any studies?

Sorry, I have to back up RobBob on this one. As far as I know, there is no known "safe" level for mercury; just a level below which you might not care about the impairment that you're likely to get.In reply to:Label Tuna for Mercury, AMA Urges FDAWASHINGTON, DISTRICT OF COLUMBIA, Jul. 8 -/E-Wire/-- Advocates are applauding new policies recently adopted by the American Medical Association calling on the Food & Drug Administration to test fish and require stores to post mercury warnings wherever canned tuna and other fish are sold."FDA recently warned pregnant women and children to limit albacore tuna consumption to one can per week," said Michael Bender of the Mercury Policy Project. "Now it's time for FDA to thoroughly test seafood and follow AMA's recommendation to mandate mercury warnings wherever canned tuna and other seafood is sold."...

1 question about Bioaccumilation A.K.A Biomagnification. Since Tuna eats other fishes that may contain pesticides, things with Mercury etc. So when we eat Tuna, do we get ALL the mercury and pestices and w/e in our body? and thats why it's harmful?Sorry, this debate went on in my science class last year.

That's how it works with mercury and other heavy metals, and possibly pesticides.

I thought it was pretty much a settled scientific idea.

Some guys been telling me that is aload of crap! and that bioaccumilation does not work in the human body only in animals.Theres a pesticide called DDT, he said that it has more chances of Bioaccumilation, building up and upm then mercury. True?

I don't know. You'll have to look it up. U.S. Geological Survey on mercury in the environment.