Quantcast
Food

Fukushima Radiation: Is it Safe to Eat the Fish?

Dr. David Suzuki

Following Japan’s devastating 2011 earthquake and tsunami, fear spread about risks of leaked radiation from the Fukushima Daiichi nuclear power plant—for the health of those living in or near Fukushima or involved in cleanup efforts, and for the planet and the potential impacts on our complex marine food web.

Shunichi Tanaka, head of Japan’s Nuclear Regulation Authority, told reporters radioactive water has likely been leaking into the Pacific Ocean since the disaster hit. It’s the largest single contribution of radionuclides to the marine environment ever observed, according to one report. With 300 tons of contaminated water pouring into the sea every day, Japan’s government finally acknowledged the urgency of the situation in September.

Testing for radioactivity after South Korea bans fish from Japan. Photo credit: AP / Ahn Young-joon

Social media is now abuzz with people swearing off fish from the Pacific Ocean. Given the lack of information around containment efforts, some may find this reasonable. But preliminary research shows fish caught off Canada’s Pacific Coast are safe to eat.

It will take about three years from the time of the incident for the radiation plume to reach the West Coast, which would be early next year. Recent testing of migratory fish, including tissue samples collected from Pacific bluefin tuna caught off the California coast, assessed radiation levels and potential effects on marine food webs far away from Japan. Trace amounts of radioisotopes from the Fukushima plant were found, although the best available science puts them at levels below those naturally occurring in the environment around us. Natural, or background radiation, is found in many sources, including food items, medical treatments and air travel.

The most comprehensive health assessment, by the World Health Organization (WHO), concludes radioactive particles that make their way to North America’s waters will have a limited effect on human health, with concentrations predicted to be below WHO safety levels.

More reports are in the works. The UN agency charged with assessing global levels and consequences of ionizing radiation will present its findings to the UN General Assembly this month. This is where we may find answers about the amount of radioactive material released, how it was dispersed and any repercussions for the environment and food sources.

The ocean is vast and dynamic with many complexities we don’t fully understand. It appears two currents off Japan’s coast—the Kuroshio Current and Kurushio Extension—diluted radioactive material to below WHO safety levels within the first four months of the disaster. Eddies and giant whirlpools, some tens of kilometers wide, continue the dilution and will direct radioactive particles to coastal areas for at least two decades.

Fish from the water near the crippled plant are not faring so well. High levels of cesium-134, a radioactive isotope that decays rapidly, were found in fish samples there. Radiation levels in the sea around Japan have been holding steady and not falling as expected, further demonstrating that radiation leakage is not under control. At least 42 fish species from the immediate area are considered unsafe for consumption, and fisheries there remain closed.

New concerns continue to arise. While the initial leak contained cesium isotopes, water flowing into the ocean from the plant now appears to be higher in strontium-90, a radioactive substance that is absorbed differently. While cesium tends to go in and out of the body quickly, strontium heads for the bones.

A huge accumulation of radioactive water at the plant must be dealt with immediately. Determining the full effects of years of exposure to lower levels of radioactive contamination leaking into the ocean will take time and require continued monitoring and assessment. While Health Canada monitors radionuclide levels in food sold in Canada, and one of its studies incorporates samples from Vancouver, we need to remain vigilant and demand timely monitoring results.

Any amount of leaked radiation is harmful to the planet and the health of all species, including humans. A major release of radioactivity, such as that from Fukushima, is a huge concern, with unknowns remaining around long-term health risks such as cancers.

That doesn’t mean it’s unsafe to eat all fish caught on the Pacific West Coast. I’m taking a precautionary approach: fish will stay part of my diet, as long as they’re caught locally and sustainably, and will remain so until new research gives me pause to reconsider.

Visit EcoWatch’s NUCLEAR and FOOD pages for more related news on this topic.

——–

Show Comments ()

EcoWatch Daily Newsletter

Sponsored
Popular
Michigan Department of Health and Human Services Director Nick Lyon, seen here speaking to the press about the Flint water crisis in 2016, will be the highest ranking official to stand trial over the public health disaster. Brett Carlsen / Getty Images

Judge Orders Michigan Health Director to Face Trial Over Flint Water Crisis Deaths

Michigan Department of Health and Human Services Director Nick Lyon will be the highest ranking official to go to trial so far as a result of an investigation into the Flint water crisis, The Associated Press reported Monday.

Judge David Goggins ruled Monday there was probable cause for Lyon to stand trial for involuntary manslaughter in the deaths of Robert Skidmore and John Snyder that prosecutors say were due to a Legionnaires' disease outbreak that Lyon was aware of a year before he alerted Michigan's governor, Michigan Live reported. Lyons is also charged with misconduct in office.

Keep reading... Show less
Politics
Coal-fired power plant near Becker, Minnesota. Tony Webster / Flickr / CC BY-SA 2.0

Trump's 'Dirty Power Plan' Could Cost More Than 1,000 Lives a Year

The U.S. Environmental Protection Agency (EPA) unveiled on Tuesday its long-anticipated replacement of the Obama-era Clean Power Plan. The new coal pollution rules will increase planet-warming carbon pollution and could cost more than a thousand American lives each year, according to the EPA's own estimates.

EPA Acting Administrator Andrew Wheeler released the "Affordable Clean Energy Rule" today under President Trump's directive. The new plan encourages efficiency improvements at existing coal plants to ensure they operate longer and allows states to weaken, or even eliminate, coal emissions standards. That's a clear difference from former President Obama's plan, which was aimed at phasing out coal and transitioning to cleaner power sources to avoid dangerous climate change.

Keep reading... Show less
Health
Two workers in protective gear scrape asbestos tile and mastic from a facility at Naval Base Point Loma in California. NAVFAC / Flickr / CC BY 2.0

Why Asbestos Is Still a Major Public Health Threat in the U.S.

Reports surfaced this month that the U.S. Environmental Protection Agency (EPA) had proposed a significant new use rule (SNUR) for asbestos in June, requiring anyone who wanted to start or resume importing or manufacturing the carcinogenic mineral to first receive EPA approval.

Keep reading... Show less
Animals
Rklfoto / Getty Images

Bipartisan Group of Lawmakers Wants to End EPA’s Cruel Animal Testing

By Justin Goodman and Nathan Herschler

A bipartisan group of lawmakers in Congress recently pressed the U.S. Environmental Protection Agency (EPA) on its "questionable" and "dubious" animal tests. The lawmakers' demand for information on "horrific and inhumane" animal testing at the EPA comes on the heels of a recent Johns Hopkins University study that found that high-tech computer models are more effective than animal tests.

Keep reading... Show less
Sponsored
Climate
Wikimedia Commons

Strongest, Oldest Arctic Sea Ice Breaks Up for First Time on Record

The Arctic is warming at a rate twice as fast as the rest of the globe, and now the region's thickest and oldest sea ice—also known as "the last ice area"—is breaking up for the first time on record, the Guardian reported Tuesday.

The breakage has opened up waters north of Greenland that are normally frozen-solid even in the peak of summer.

Keep reading... Show less
Energy
Climate Justice Edmonton

These Giant Portraits Will Stand in the Path of Trans Mountain Pipeline

By Andrea Germanos

To put forth a "hopeful vision for the future" that includes bold climate action, a new installation project is to be erected along the controversial Trans Mountain pipeline expansion route to harnesses art's ability to be a force for social change and highlight the fossil fuel project's increased threats to indigenous rights and a safe climate.

Keep reading... Show less
Sponsored
Popular
A worker inspects recycled plastic in a plastics factory. Getty Images

The Plastic Waste Crisis Is an Opportunity to Get Serious About Recycling

By Kate O'Neill

A global plastic waste crisis is building, with major implications for health and the environment. Under its so-called "National Sword" policy, China has sharply reduced imports of foreign scrap materials. As a result, piles of plastic waste are building up in ports and recycling facilities across the U.S.

Keep reading... Show less
Adventure
Aaron Teasdale

The One Thing Better Than Summer Skiing

By Aaron Teasdale

"There's snow up here, I promise," I assure my son Jonah, as we grunt up a south-facing mountainside in Glacier National Park in July. A mountain goat cocks its head as if to say, "What kind of crazy people hike up bare mountains in ski boots?" He's not the only one to wonder what in the name of Bode Miller we're doing up here with ski gear.

Keep reading... Show less
Sponsored

mail-copy

The best of EcoWatch, right in your inbox. Sign up for our email newsletter!