Scottish politicians have been among volunteers having their blood tested for toxic chemicals.
Results are being compiled from around the UK
Environmental organisation WWF was hosting a toxic chemical testing station outside Our Dynamic Earth in Edinburgh.
The move is part of a UK tour collecting evidence of contamination as part of WWF's Chemical and Health campaign.
The group is seeking to phase out or ban hazardous chemicals found in everyday products such as tinned food, make-up, televisions and carpets.
Scots are unwilling participants in this uncontrolled global experiment in toxic contamination
Campaigners are also offering advice on how to reduce the risk of exposure to these chemicals.
Sarah Boyack MSP, Catherine Stihler MEP and Co-operative Bank branch manager Paul McShane were among those being tested for more than 70 chemicals
which could have contaminated their bodies.
Simon Pepper, director of WWF Scotland, said: "The European Union admits that 99% of the volume of man-made chemicals in our environment is poorly regulated.
"Scots are unwilling participants in this uncontrolled global experiment in toxic contamination.
"It is obvious that we need far tougher regulations to protect the public from this growing risk to human health."
Kate Daley, campaigns manager at the Co-operative Bank which is supporting the campaign, said: "The Co-operative Bank has been concerned about persistent and
bio-accumulative chemicals for a number of years and believes that they should be phased out and replaced with safer alternatives.
"We don't believe it's sensible to prevaricate with further research and testing could take decades.
"Future generations should have the peace of mind to know that the environment, wildlife and their bodies are free from a potentially harmful cocktail of contaminants."
The monitoring tour will last two weeks visiting 12 locations across the UK in which a total of 150 people will have their blood tested.
The results will be made public in the autumn.