Navigation Links
Restaurant Sushi May Have More Mercury Than Store-Bought Fare

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:
(Date:11/30/2015)... ... , ... According to Los Angeles bariatric surgeon Michael Feiz, M.D., F.A.C.S., many ... real hunger, but instead by a hormone called ghrelin which (often prematurely) signals ... are aware that weight loss surgery can help patients lose weight by restricting the ...
(Date:11/30/2015)... Miami, FL (PRWEB) , ... November 30, 2015 ... ... added a comparison chart and ingredient list of its hemorrhoid ointment to its ... “fast, effective pain relief for people suffering from hemorrhoids. Adding the comparison chart ...
(Date:11/30/2015)... ... November 30, 2015 , ... Using a combination of two blood sugar tests ... adults, according to a new study by researchers at the School of Public Health ... Adults: Using Combinations of Blood Glucose Tests ,” published in Frontiers in Public Health, ...
(Date:11/30/2015)... ... November 30, 2015 , ... The recently ... Poison Data System (NPDS) reveals that in 2014, someone called a poison center ... two million of which were human exposure cases. , The American Association of ...
(Date:11/30/2015)... Reading, PA (PRWEB) , ... November 30, 2015 ... ... Ashland Specialty Ingredients (ASI) as their exclusive channel partner for the Nutraceutical Specialties ... supplements markets in the US, effective immediately. , “We are pleased to ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... MOUNTLAKE TERRACE, Wash. and ST. ... Cross and Express Scripts (NASDAQ: ESRX ) today ... benefit agreement. The partnership, which began in 1999, will ... --> --> After evaluating pharmacy ... process, Premera concluded that Express Scripts continues to offer ...
(Date:11/30/2015)... CHICAGO , Nov. 30, 2015   Nuance ... The National Decision Support Company (NDSC) today ... support and collaboration capabilities that utilize the American College ... and healthcare provider organizations to comply with current ... --> --> By combining clinical ...
(Date:11/30/2015)... , Nov. 30, 2015 Varian Medical Systems (NYSE: ... an educational partnership with Apollo Hospitals Group, the largest hospital chain ... will help train radiation technologists in the country. The MoU was ... Apollo Knowledge, and Ashok Kakkar , Varian,s India ... India , Varian intends to deploy its ...
Breaking Medicine Technology: