Navigation Links
Fish consumption advisories fail to cover all types of contaminants

A new modeling study suggests that fish consumption advisories for expecting mothers are ineffective in reducing infant exposure to long-lived contaminants like persistent organic pollutants (POPs).

The study, performed by a team of researchers including University of Toronto Scarborough PhD student Matt Binnington and Professor Frank Wania, looks at how different levels of environmental contamination, a mother's compliance with advisories, and the behavior of chemicals in the body influenced exposure in her children.

Their model estimates that women who stop eating fish shortly before or during their pregnancy may only lower their child's exposure to POPs by 10 to 15 per cent.

"We have to be careful in saying fish advisories don't work at all because they can work very well for reducing exposure to quickly eliminated contaminants, such as mercury," says Binnington. "But for POPs we found that they are not very effective."

POPs are compounds that take a long time to break down and as a result can persist in the environment and begin to accumulate in humans by way of the food chain. While many POPs such as DDT and PCBs have long been banned from production, they still exist in the environment. Fish advisories have been developed for these chemicals because they are easily passed from mothers to their children during pregnancy and nursing, potentially impacting healthy infant neurodevelopment.

Binnington says consumption advisories for many POPs are ineffective because they can remain in the body for years or even decades due to properties that make it difficult for the human body to eliminate them. The same is not true for mercury-based advisories, as the time it remains in the body is much shorter compared to POPs.

"Something like mercury stays in the body for only a few months and by temporarily adjusting your diet you can reduce exposure," says Binnington.

The limitation with consumption advisories is that while they inform people what not to eat, they do not offer much in the way of healthy alternatives, says Wania. In fact, substituting fish with meat such as beef may even end up doing more harm.

"Substituting fish with beef may actually result in higher exposure to other contaminants," he says, adding there is also a loss of nutritional benefits by not eating fish.

The research, which received funding through NSERC) and the Northern Contaminants Program (NCP) of the Canadian Department for Aboriginal Affairs and Northern Development (AANDC), is published in the journal Environmental Health Perspectives.


Contact: Don Campbell
University of Toronto

Related biology news :

1. Most schools meet USDA drinking water mandate; more steps needed to encourage consumption
2. Coffee consumption reduces mortality risk from liver cirrhosis
3. High consumption of fish oil may benefit cardiovascular health, Pitt public health finds
4. USDA school meal standards positively impact low-income students fruit and vegetable consumption
5. New school meal standards significantly increase fruit, vegetable consumption
6. Manga comics may help promote fruit consumption among youth
7. Slower-paced meal reduces hunger but affects calorie consumption differently
8. Study: Moderate alcohol consumption boosts bodys immune system
9. Latest research suggests moderate coffee consumption is not associated with increased CVD risk
10. Ease of access improves fruit and vegetable consumption
11. For disappointed sports fans, defeats increase consumption of fat and sugar
Post Your Comments:
Related Image:
Fish consumption advisories fail to cover all types of contaminants
(Date:11/4/2015)... , November 4, 2015 ... new market report published by Transparency Market Research "Home Security ... Trends and Forecast 2015 - 2022", the global home security ... 30.3 bn by 2022. The market is estimated to ... period from 2015 to 2022. Rising security needs among ...
(Date:10/29/2015)... --  MedNet Solutions , an innovative SaaS-based eClinical technology ... is pleased to announce that it has been selected ... of only three finalists for a 2015 Tekne ... category. The Tekne Awards honor Minnesota ... and leadership. iMedNet™ eClinical  technology ...
(Date:10/29/2015)... , Oct. 29, 2015 Daon, a ... that it has released a new version of its ... in North America have already ... v4.0 also includes a FIDO UAF certified server ... already preparing to activate FIDO features. These customers include ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... 2 nouvelles études permettent d , ... les souches bactériennes retrouvées dans la plaque dentaire ... . Ces recherches  ouvrent une nouvelle voie ... de l,un des problèmes de santé les plus ... --> 2 nouvelles études permettent d , ...
(Date:11/25/2015)... Nov. 25, 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ: ... business and prospects remain fundamentally strong and highlights ... doxorubicin) recently received DSMB recommendation to continue the ... review of the final interim efficacy and safety ... Endpoint in men with heavily pretreated castration- and ...
(Date:11/25/2015)... ... November 25, 2015 , ... Jessica Richman and Zachary Apte, ... their initial angel funding process. Now, they are paying it forward to other ... stage investments in the microbiome space. In this, they join other successful ...
(Date:11/24/2015)... , Nov. 24, 2015 Halozyme Therapeutics, Inc. (NASDAQ: ... in New York on Wednesday, December 2 ... Torley , president and CEO, will provide a corporate overview. ... York at 1:00 p.m. ET/10:00 a.m. PT . ... relations, will provide a corporate overview. --> th ...
Breaking Biology Technology: