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:8/18/2017)... ... August 18, 2017 , ... “Emotions are sacred, valid, honored, encouraged. This ... positive education company Generation Mindful. To help change the mindset of parents and educators ... skills, she created the Time-In Toolkit, which launched on Kickstarter 3 weeks ago and ...
(Date:8/18/2017)... (PRWEB) , ... August 18, 2017 , ... Alcovit, a ... to ramp up its marketing efforts with its product now available through Jet.com. ... to the public. The effervescent powdered drink is designed to quickly detox the body ...
(Date:8/18/2017)... ... ... “Our Mountains to Climb: A Journey of Love and Faith Through Trials”: ... faith they shared to overcome struggles in life. “Our Mountains to Climb: A Journey ... Corcoran, a retired teacher and happily married since 1999; the author’s personal experiences drive ...
(Date:8/18/2017)... ... ... “Beyond Our Imaginations: The Infinite God”: shows the importance of God in living ... of published author, Mark Lawrence, born in Michigan, the author has lived in various ... greater man of God is that I have to be more mindful of feminine ...
(Date:8/18/2017)... ... ... Mandate for Kingdom Builders”: a call to walk as citizens of the Kingdom and ... published author, John F. McGeorge, Jr. Dr. John F. McGeorge Jr., B.A., J.D., ... three decades training pastors and Christian leaders. He also met his wife, Valerija, ...
Breaking Medicine News(10 mins):
(Date:8/7/2017)... , Aug. 7, 2017  Endo International plc ... reached agreements to resolve virtually all known U.S. mesh ... discussions to resolve the known remaining U.S. claims at ... payments beginning in the fourth quarter of 2017 and ... of its second quarter 2017 results, the Company intends ...
(Date:8/4/2017)... Aug. 3, 2017  Agragen, LLC, a ... in the biopharmaceutical, nutraceutical, and aquacultural feed sectors, ... its lead drug candidates, AGR131.  This drug is ... from the blood of patients suffering from inflammatory ... bowel disease. ...
(Date:8/2/2017)... Aug. 2, 2017 Fenita J. ... as a Pinnacle Lifetime Professional in the Field ... Manager at Turing Pharmaceuticals, AG. Her skills and ... relationship building.                ... 25 years of experience as a highly successful ...
Breaking Medicine Technology: