After a quick search on the matter, I am now more confused than when I started. Fish is a complicated animal, especially when you factor in that it can be eaten.
Various news presses, studies, and 'research' show that tuna and its oily-fish counterparts can do everything from: increasing concentration, decreasing depression, puts a higher risk for pregrant mothers to have premature birth, it can limit cancer risk especially that of prostate, alleviates asthma, produces a warning on autism for unborn children of expectant mothers, prevents and aids those who have had or are at risk of heart attack/stroke, or filling your your body with contiminants found in the fish, fights wrinkles, and after all those studies on tuna, the most surprising one of all claims that "when the results were pooled of no fewer than 89 studies into the benefits of omega 3 fats, they showed no strong evidence that omega 3 affected overall deaths, heart disease, strokes or cancer...".
Two noteworthy articles that I came across, and will present here show that, one story contradicts the OP's contention entirely, actually claiming that eating tuna, mackerel and salmon aid those in risk of going blind and can significantly decrease contracting the illness, while the other puts forth that fatty fish don't have any significant helath gains or losses when all is said and done.
Quote:
11/07/2006
Daily Mail
EATING oily fish such as mackerel and tuna can stop you going blind, say scientists. Just one portion of fish high in the wonder fatty acid Omega 3, can slash the odds of eye disease by half. A study in the US Journal of Clinical Nutrition claims a diet including oily fish such as salmon massively reduces the risk of AMD (Age Related Macular Degeneration) which causes blindness, particularly in old age. More than one portion of Omega 3 rich fish a week cuts the chances by 70 per cent. Astrid Fletcher, Professor of Epidemiology in London, who led the research, said: "It is the first study in Europeans to show a beneficial association on AMD from the consumption of oily fish. "It is also consistent with results from studies in the US and Australia." August 14, 2008
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Quote:
24/03/2006
The Independent
Debunked: the health benefits of oily fish
Researchers from the University of East Anglia who reviewed no fewer than 89 studies into the benefits of omega 3 fats, say that when the results were pooled they showed no strong evidence that omega 3 affected overall deaths, heart disease, strokes or cancer. Until three years ago cumulative evidence showed that omega 3 was beneficial ,but a major study, the Dart 2 trial, changed the overall picture in 2003 when it found a higher heart death rate in men taking fish oil supplements. The possibility the findings were the result of high mercury levels in fish has been put forward.
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One more article I came across that intrigued my soul was entitled:
Blind Man 'Sees' : NPR
(you can listen and read the story at npr.org)
Excerpt:
Tuna Sashimi and Pink Dresses
click to show
Quote:
When he was going blind, Stewart was advised to eat fish as often as possible, so he developed a thing for tuna, especially tuna sashimi.
Before our interview, he told me that tuna at lunch often triggers hallucinations. So Jessica, my producer, brought him a private stash. And sure enough, about 10 minutes later he matter-of-factly "noticed" a green curtain in the room.
I couldn't see a curtain. I couldn't see the office globe that followed floating through the air. I couldn't see the pink dress that came after the globe.
The thing is, Stewart shows no signs of being a flake or a hysteric. He was a manager, a financial officer, a pioneer in arts broadcasting in Europe. He's a sober man who has discovered, to his delight, that he can still experience color, even though, technically there is nothing there for him to see.
It's an experience manufactured by his hallucinating brain. But rather than be spooked by these phantoms, he wants more of them. It's as though, having been deprived of sight, he has figured out a final end run and instead of seeing from the outside in, he now sees from the inside out.
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