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Protecting humans and wildlife from harmful chemicals

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Wildlife impacts of chemicals

For our most recent work on chemical impacts on wildlife, see our recent wildlife blog posts:

  • Chemical pollution is impacting UK marine and freshwater wildlife
  • The polluting chemical in our sofas – and polar bears – that shows that REACH controls are failing
  • Chemicals need to be regulated upstream to address chemical pollution in rivers

See more wildlife posts in our policy blog.

Ecosystems all over the world are now contaminated with a cocktail of human-made chemicals.

CHEM Trust is particularly worried about several potentially hazardous chemicals, especially those that are persistent, bioaccumulativ­e or those which can disrupt hormones.

There is not one ocean or continent from the tropics to the once-pristine polar regions that is not contaminated with a toxic cocktail of many different human-made compounds. The pages in this section illustrate some examples of the known or suspected effects of chemical contaminants in wildlife.

Seal and seal pup
Hazardous chemicals can accumulate in female seals’ milk and be passed on to their pups

There is not one ocean or continent from the tropics to the once-pristine polar regions that is not contaminated with a toxic cocktail of many different human-made compounds.

Hormone (or endocrine) disrupting chemicals are very worrying because even at extremely low doses they can disrupt the normal workings of the reproductive, immune, nervous and other hormonally controlled systems. They can do this by mimicking natural hormones or blocking their action, or altering the breakdown or synthesis of the body’s own hormones.

Some pesticides and flame retardants are persistent, bioaccumulative or hormone disrupting. Similarly, chemicals with these worrisome properties may be found in many consumer products including certain stain repellents, cosmetics, personal care products and plastics.

CHEM Trust reports on wildlife impacts:

The impact of chemical pollution on freshwater and marine wildlife in the UK

This report, written in collaboration with the Marine Conservation Society, summarises the evidence of the impact of chemical pollution on aquatic wildlife in the UK. It also shares the views of 15 UK academics on what needs to be done differently in terms of chemical regulation, research, monitoring and funding in order to mitigate the impact of chemical pollution on freshwater and marine environments.

  • Download the 2021 report
  • Read the blog

Frogs at risk and possible implications for humans

Frog on lily padWhy EU chemicals legislation needs updating to address chemical that damage the immune system highlights serious concerns for the health of frogs (amphibians) in the UK. Scientific research suggests that exposure to man-made chemicals in our environment may be playing an important role in disease because some chemicals can weaken the immune system and increase susceptibility to infections and disease. There are likely to be implications for human health too.

  • Download the 2013 report
  • Download the press release

Persistent organic pollutants and indicators of otter health: other factors at play?

OtterThis report highlights serious concerns for the health of otters in the UK. Otters are one of our best loved species and research indicates that they may not be in the best of reproductive health. This raises the question as to whether modern chemicals, particularly endocrine disrupting chemicals (EDCs – hormone disruptors), could be to blame.

  • Download the 2013 report
  • Download the press release

Why Mollusc Toxicity Tests for Endocrine Disruptors and Other Chemicals Are Needed

Non-animal test methods can pick out some chemicals with hormone disrupting properties, but not all. A test method utilising molluscs should be seen both as a vital tool to identify chemicals which could harm these important creatures and to potentially identify some hormone disrupting chemicals implicated in disorders in other animals, including man.

  • Download the 2009 briefing

Effects of Pollutants on the Reproductive Health of Male Vertebrate Wildlife – Males Under Threat

Duck in a streamThis report shows that male fish, amphibians, reptiles, birds and mammals have been harmed by chemicals in the environment. Widespread feminisation or de-masculinisation of male vertebrate wildlife is highlighted. These findings add to mounting worries about the role of hormone disrupting or so-called ‘gender-bending’ chemicals in the environment, and the implications for human health.

  • Download full 2008 report
  • Download executive summary 
  • Download the press release
  • Download a shortened version in German

For our most recent work on chemical impacts on wildlife, see the wildlife posts in our policy blog 

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