Global task force calls for research into how everyday chemicals in our environment may cause cancer.
Fifty chemicals the public is exposed to on a daily basis may trigger cancer when combined, according to new research.
A global task force of 174 scientists from leading research centres across 28 countries studied the link between mixtures of commonly encountered chemicals and the development of cancer in a major review of our current knowledge on this subject. The study selected 85 chemicals not considered carcinogenic to humans and found 50 supported key cancer-related mechanisms at exposures found in the environment today.
Longstanding concerns about the combined and additive effects of everyday chemicals prompted the organisation Getting To Know Cancer, led by Leroy Lowe from Halifax Nova Scotia, to put the team together – pitching what is known about mixtures against the full spectrum of cancer biology for the first time. Leroy is currently doing his PhD at Lancaster Environment Centre, with Professor Frank Martin.
Frank, who contributed to an examination of how such typical environmental exposures influence dysfunctional metabolism in cancer, believes more research is now vital.
“Despite a rising incidence of many cancers, far too little research has been invested into examining the pivotal role of environmental causative agents. This worldwide team of researchers refocuses our attention on this under-researched area.”
Cancer Biologist, Dr Hemad Yasaei, from Brunel University, London contributed his knowledge regarding genes and molecular changes during cancer development. He said: “This research backs up the idea that chemicals not considered harmful by themselves are combining and accumulating in our bodies, which may trigger cancer and might lie behind the global cancer epidemic we are witnessing. We urgently need to focus more resources to research the effect of low dose exposure to mixtures of chemicals in the food we eat, air we breathe and water we drink.”
Professor Andrew Ward, from the Department of Biology and Biochemistry at the University of Bath, who contributed in the area of cancer epigenetics and the environment, said: “A review on this scale, looking at environmental chemicals from the perspective of all the major hallmarks of cancer, is unprecedented”.
William Goodson III, a senior scientist at the California Pacific Medical Center in San Francisco and lead author of the synthesis, said: “We are definitely concerned that we are now starting to see evidence of a wide range of low dose effects that are directly related to carcinogenesis, exerted by chemicals that are unavoidable in the environment.”
In light of the compelling evidence the task force is calling for an increased emphasis on and support for research into low dose exposures to mixtures of environmental chemicals. Current research estimates chemicals could be responsible for as many as one in five cancers. With the human population routinely exposed to thousands of chemicals, the effects need to be better understood to reduce the incidence of cancer globally.
The research has been published in a special series of Oxford University Publishing’s Carcinogenesis journal