New Canadian study done for first time link between the toxic nanoparticles and the disease, say the Guardian and Slate.
According to scientific research, increased exposure to ultrafine particles from fuel combustion would result in an additional case of brain carcinomas exposed to 100,000 people.
This research is based on the analysis of the medical records of 1.9 million adults living in Canada and their exposure to pollution twenty-five years (from 1991 to 2016). Although the risks of brain cancer associated with air pollution remain minimal, Scott Weichenthal from McGill University (Canada), who led the study, believes that "if we multiply these small risks by a large number of people, there can be many cases. For example, in a big city, this figure can be significant.
10% higher risk in the city
The study found that one year of exposure to about 10,000 nanoparticles-loaded carcinogenic chemicals per cubic centimeter of street cars, increases the risk of brain cancer by more than 10%. According to Scott Weichenthal, people living in an environment where pollution is present 50,000 nanoparticles per cm3 have 50% additional risk to develop brain cancer compared to those living in 15,000 polluted air.
Professor of Epidemiology and Biostatistics wants to remind that his study is at this stage only one first analysis. According to Scott Weichenthal, it is necessary to multiply the research on this topic to confirm or not the causal hypothesis.
7 million deaths a year
Other scientific studies have already shown that breathing causes toxic air effects on the brain : decreased intelligence, mental health problems.
For its part, the World Health Organization even qualifies air pollution as " quiet public health emergency And he estimates that it would kill about 7 million people each year.