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Radiation in some albacore tuna caught off the Oregon coast tripled after the 2011 Fukushima nuclear meltdown in Japan, a new study from Oregon State University shows. Still, those levels were a thousand times lower than the maximum safe level set by the U.S. Department of Agriculture. “You can’t say there is absolutely zero risk because any radiation is assumed to carry at least some small risk,” said the study’s lead author, Delvan Neville, a graduate research assistant in OSU’s Department of Nuclear Engineering and Radiation Health Physics. “But these trace levels are too small to be a realistic concern.” Researchers tested 26 Pacific albacore. Some had been caught between 2008 and the March 2011 tsunami and nuclear accident. Others were caught between the accident and 2012. They discovered that levels of specific radioactive isotopes did increase after the accident, although by a minute amount. More