Global Consensus on Mercury: Scientists Defend Science Journalists
Mercury has again been in the news with the release of new data on mercury levels in tuna sushi by the New York Times and Oceana/Mercury Policy Project study.
According to the Mercury Policy Project “While the results were startling - around one of three pieces of tuna tested had levels above FDA's action level of 1 PPM - the attack by special interests against those covering the news was swift and erroneous. Seemingly, according to these special interests, everyone including pregnant women and children could eat as much high mercury fish as they wanted, without any risk”. In response, 29 mercury experts from 11 countries signed on to the following open letter to set the record straight:
LETTER
February 1, 2008
There is no longer a need to debate whether the writings of journalists such as Ms. Sharon Begley (Newsweek) and Ms. Marian Burros (New York Times) are credible or biased, because there is a global consensus among scientists addressing the toxicity of mercury, its sources and the implications of both on public health. This consensus has been documented and is available to the public. As it turns out, their writings are consistent with that consensus.
Many of us joined over 1,000 of the world's foremost mercury experts for the International Conference on Mercury as a Global Pollutant. Together we developed a consensus declaration that addresses some of the specific points that have been raised here and elsewhere in the discussion around the New York Times article and the Oceana/Mercury Policy Project study. Many of us also have published peer reviewed scientific papers on the subject.
While the consensus declaration was not cause for tremendous alarm, it clearly highlighted the need to recognize that mercury levels in fish are cause for concern and that sensitive populations should choose low mercury fish in order to get the benefits of seafood while avoiding the risks of mercury. The consensus included the following points summarized below:
- About two thirds of the mercury in our environment is derived from human activities
- Mercury is highly toxic, biomagnifies in the aquatic food web and places humans at risk if they consume high levels of fish that are high on the food chain.
- In many populations there is evidence that current levels of exposure are sufficient to affect several physiological systems and as a result current mercury exposure levels constitute an important public health problem.
- Methylmercury affects nervous system development and there is sufficient evidence to warrant the prudent selection of fish in the diet, specifically for pregnant women and children.
- Long-lasting effects of fetal methylmercury exposure have been documented in children throughout the world.
Rather than following the selective science approach, and chasing down one or two studies that support a particular viewpoint, we recommend anyone who is truly interested should benefit from the full weight of the evidence by reading the scientific consensus in the Conference Declaration which is available here: http://www.mercury2006.org/portals/31/Mercury2006_conferencedeclaration. pdf
Sincerely,
Henry A. Anderson, MD
Chief Medical Officer
H.Vasken Aposhian, PhD
Professor of Molecular and Cellular Biology
Professor of Pharmacology
The
John Bolton, MD, FAAP
Clinical Professor of Pediatrics
Dr. Birger Heinzow, MD
State Social Services Agency
Dept. for Healthcare -- Environmental Health
David R. Brown Sc.D.
Faculty member
Applied Ethics
Richard W. Clapp, D.Sc., MPH
Professor
Prof. Dr. Ralf Ebinghaus
Department for Environmental Chemistry
Institute for Coastal Research
GKSS Research Centre
Prof. Xinbin Feng, PhD
Vice Director
State Key Laboratory of Environmental Geochemistry
Philippe Grandjean, MD, PhD
Adjunct Professor of Environmental Health
Department of Environmental Health
Wendy J. Heiger-Bernays, PhD
Associate Professor
Department of Environmental Health
Jane Hightower, MD
Milena Horvat, PhD
Department of Environmental Sciences
Jozef Stefan Institute
Tord Kjellstrom, Med Dr, PhD, MEng
Visiting Fellow
Lynda Knobeloch, PhD
Research and Toxicology Unit Leader
Marc Lucotte, PhD
Universite du Quebec a
Kathryn R. Mahaffey, PhD
Research Professor
Peter
Director
Concorde East/West Sprl
Donna Mergler PhD
professeure emerite
CINBIOSE,
Universite du Quebec a
Dave McBride
Toxicologist
Washington State Department of Health
John Munthe, PhD
Department Head
IVL Swedish Environmental Research Institute
Lewis Pepper, MD, MPH
Darren Rumbold, PhD
Associate Professor of Marine Science
Depart. of Marine and Ecological Sciences
Mineshi Sakamoto, PhD
Director International Affair and Environmental Sciences
National Institute for Minamata Disease
Ellen K. Silbergeld, PhD
Professor, Environmental Health Sciences
Alan H. Stern, Dr.P.H., D.A.B.T.
Adjunct Associate Professor
Dept. of Environmental and Occupational Health
Raphael Stricker, MD
Leonardo Trasande, MD, MPP
Assistant Professor
Departments of Community and Preventive Medicine and Pediatrics
Pal
Chief Physician
Department of Occupational Medicine and Public Health
The
Roberta F. White, PhD, ABPP/cn
Professor and Chair, Department of Environmental Health
More information:
http://www.nytimes.com/2008/01/23/dining/23sushi.html
