Navigation Links
Restaurant Sushi May Have More Mercury Than Store-Bought Fare
Date:4/22/2010

Toxin concentrations higher in certain tuna species versus others, study finds

THURSDAY, April 22 (HealthDay News) -- The tuna sushi that you order in restaurants may have higher concentrations of mercury than the sushi you buy at your local supermarket, a new study finds.

Supermarkets tend to sell sushi made from yellowfin tuna, which contains less mercury than other tuna species, researchers report.

"We found that mercury levels are linked to specific species," Jacob Lowenstein, a graduate student working with the American Museum of Natural History in New York City, said in a news release from the museum. "So far, the U.S. does not require restaurants and merchants to clarify what species they are selling or trading, but species names and clearer labeling would allow consumers to exercise greater control over the level of mercury they [consume]," he added.

For their study, the researchers combined two efforts: DNA barcoding performed at the museum to identify specific species; and a mercury content analysis from experts at Rutgers University. The report was published online April 21 in Biology Letters.

"People who eat fish frequently have a particular need to know which species may be high in contaminants," said Michael Gochfeld, professor at Robert Wood Johnson Medical School in New Jersey. "Some agencies have been afraid that any mention of contaminants will discourage people from eating any fish."

The team sampled sushi from 54 restaurants and 15 supermarkets in New York, New Jersey and Colorado, and tested them for relative mercury content. Through DNA barcoding, 100 samples were identified as either bigeye tuna, yellowfin tuna or three different bluefin tuna species.

The team reported that all species tested exceeded or approached mercury concentrations permissible by the United States, the European Union, Japan and Canada, plus those set by the World Health Organization.

Higher mercury levels were found in bigeye tuna and bluefin akami, which is a lean, dark red tuna, than in bluefin toro, a fatty tuna, and yellowfin tuna akami, the researchers said. Mercury tends to accumulate in muscle rather than fat, so mercury content is usually -- but not always -- higher in leaner fish. Yellowfin tuna, for example, is lean, but may accumulate less mercury because it is smaller and harvested earlier than other species, they said.

The seafood industry took a critical view of the report.

"This is a study that tests mercury levels in fish, but stops short of any work exploring what -- if anything -- those levels mean for health," said Gavin Gibbons, director of media relations at the National Fisheries Institute, in an institute statement issued Wednesday.

He added that research has shown that "eating fish as a whole food -- omega-3s, selenium, lean protein, traces of mercury and all -- is a boost to heart and brain health."

In addition, Gibbons said, the U.S. Food and Drug Administration's mercury limit for seafood includes a 1,000 percent safety factor, "and approaching that limit or even slightly exceeding it does not equal health risk," he said.

More information

To learn more about mercury in seafood, see the U.S. Environmental Protection Agency.



-- Margaret Steele



SOURCES: American Museum of Natural History, news release, April 21, 2010; statement, National Fisheries Institute, April 21, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. National Greenhouse Co. Helps Restaurants Grow Produce In-House
2. National Restaurant Association Says Nutrition Information Provision Is Win for Consumers and Restaurants
3. Restaurants, C-Stores and Retailers Defy the Challenging Economy Raising A Record $5.6 Million During Annual St. Jude Halloween Promotion
4. Research finds hazards from secondhand smoke in bars and restaurants
5. SUBWAY Restaurants Announce ‘Footlong Nation Appreciation' Campaign to Say ‘Thanks' for Making Their Footlongs Famous
6. Cities and states propose voluntary framework for cutting salt in packaged and restaurant foods
7. Sushi & Breastfeeding Join Birth Defects & Preterm Birth as Leading Concerns of Moms
8. High levels of mercury found in Cataraqui River: Queens study
9. Too Much Mercury in Canned Tuna -- Or Is There?
10. Tests Show Top Tuna Brands Have High Mercury Levels
11. Older dental fillings contain form of mercury unlikely to be toxic
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced ... feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as a ... has released tools for healthy coping following a traumatic event. , Trauma sufferers tend ...
(Date:6/24/2016)... ... ... a crisis. Her son James, eight, was out of control. Prone to extreme mood shifts ... upset him, he couldn’t control his emotions,” remembers Marcy. “If there was a knife ... and say he was going to kill them. If we were driving on the ...
(Date:6/24/2016)... ... 24, 2016 , ... Global law firm Greenberg Traurig, P.A. announced that 20 ... by their peers for this recognition are considered among the top 2 percent of ... honors as members of this year’s Legal Elite Hall of Fame: Miami Shareholders ...
(Date:6/24/2016)... ... 2016 , ... Comfort Keepers® of San Diego, CA is excited to announce ... program to drive cancer patients to and from their cancer treatments. Comfort Keepers ... of life and ongoing independence. Getting to and from medical treatments is one ...
(Date:6/24/2016)... Plano, TX (PRWEB) , ... June 24, 2016 , ... ... taking part in Genome magazine’s Code Talker Award, an essay contest in which patients ... for an award to be presented at the 2016 National Society of Genetic Counselors ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 2016 Research and Markets ... Electronics 2015-2025: Applications, Technologies, Forecasts" report to ... In-Mold Electronics, Smart Skin, Structural Health Monitoring, Composite ... Structural electronics involves electronic and/or electrical components and ... dumb structures such as vehicle bodies or conformally ...
(Date:6/24/2016)... SAN CLEMENTE, Calif. , June 24, 2016  American ... function testing company, is now able to perform sophisticated lung assessments ... ndd Medical Technologies , Inc. Patients are no ...  Thanks to ndd,s EasyOne PRO ® , ARL patients like Jeanne ... needed testing done in the comfort of her own home. ...
(Date:6/24/2016)... --  Pulmatrix, Inc ., (NASDAQ: PULM ), ... today that it was added to the Russell Microcap ... set of U.S. and global equity indexes on June ... for Pulmatrix," said Chief Executive Officer Robert Clarke ... in developing drugs for crucial unmet medical needs, and ...
Breaking Medicine Technology: