Therefore,
Prolonged exposure air pollution would:
A real public health problem. For example, which is added to the many dangers linked to air pollution. Therefore, According to a group of scientists from the University of Cambridge (United Kingdom). Furthermore, there is a direct link between exposure to polluted air and the development of dementia type pathologies.
Published in full on The Lancet Planetary Health. Consequently, the study in question has been the subject of a popular article on the site of the famous British university. Therefore, Its authors expose their method and present the results obtained, at the very least alarming.
Dementia cases could triple worldwide by 2050 – Prolonged exposure air pollution would
As researchers in the introduction recall, more than 57.4 million people worldwide are currently suffering from a form of dementia. Similarly, the number of patients could increase sharply in the years to come.
According to a projection published in 2022 by The Lancet. Nevertheless, prolonged exposure air pollution would as part of a more general study on the global burden of disease of diseases carried out under the aegis of the World Health Organization (WHO), the number of people with dementia could triple by 2025, to reach 152.8 million cases around the world.
A meta-analysis compiling data of 29 million patients – Prolonged exposure air pollution would
To show that prolonged exposure to air pollution constitutes an aggravating factor in this disturbing trend. Nevertheless, researchers from the Medical Research Council (MRC) epidemiology unit of the University of Cambridge have carried out a meta-analysis of different studies carried out on the subject.
Scientists have thus compiled data from 51 different research, relating to 29 million people in total. Consequently, As the authors of the study specify. Furthermore, the majority of these studies were carried out in high -income countries, mainly in North America, Europe and Asia.
Fine particles, nitrogen dioxide and soot – Prolonged exposure air pollution would
Researchers have particularly interested in prolonged exposure air pollution would three types of air pollution: fine particles (a diameter of 2.5 microns. Therefore, less) from vehicle emissions, power plants and wood stoves and fireplaces; the nitrogen dioxide emitted by the combustion of fossil fuels; and the soot coming from the exhausts of vehicles and the combustion of wood.
At the origin of many health problems. including heart and respiratory diseases, these pollutants also have the effect of unraveling our brain and promoting the development of different forms of dementia, according to the results of the study.
An increase in relative risk in all cases
For each of the three types of pollution observed by the researchers. the latter have “noted a positive and statistically significant association” with the number of cases of dementia. In other words. the more a person is exposed to an air polluted daily, the more likely they are with dementia.
More specifically. according to researchers’ calculations, for each prolonged exposure air pollution would 10 micrograms per cubic meter of fine particles present in the atmosphere, the relative risk of dementia increases by 17%. The same proportion of nitrogen dioxide generates a 3% increase in the risk of developing a form of dementia. In the case of soot, this increase in relative risk was measured at 13%.
If the causal link between air pollution. dementia seems difficult to dispute with such reports, researchers have not yet identified with certainty the mechanisms that make these different pollutants of aggravating factors.
The main hypothesis at this stage of research is that fine particles. nitrogen dioxide and soot tend to increase brain inflammation and oxidative stress, chemical processes directly responsible for dementia, either “by direct penetration into the brain”, or by “blood circulation from the lungs”.
Additional proof of the link between air pollution. dementia
“Epidemiological data play a crucial role in determining if atmospheric pollution increases the risk prolonged exposure air pollution would of dementia and to what extent, commented the main author of the study, the Dre Haneen Khreis. Our work provides additional evidence to support observation that prolonged exposure to outdoor air pollution is a factor of. risk of dementia in adults in health.”
“This rigorous study is added to the increasingly numerous evidence according to which exposure to air pollution – from vehicle exhaust gases to wood stoves – increases the risk of developing dementia”. abounds in the columns of The Guardian the DRE Isode Radford, which has not participated in research.
“This is not a problem that individuals can solve alone”
According to this official of the Alzheimer’s Foundation’s Research UK. the results obtained by Cambridge researchers must push the authorities to act, all over the world. “Atmospheric pollution is one of the main modifiable risk factors for dementia. but this is not a problem that individuals can solve alone, prolonged exposure air pollution would explains Isode Radford. This is where the commitment of the public authorities is crucial.”
“Fighting atmospheric pollution can have long -term beneficial effects on health, society, climate and economy, confirms the Haneen Khreis DRE. This can reduce the considerable burden that weighs on patients, families and caregivers, while lightening pressure on overloaded health systems.”
“Stricter limits” will be necessary to protect populations
Co-structure of the study. Clare Rogowski believes that to permanently improve air quality, “stricter limits for several pollutants will probably be necessary, targeting the main contributors such as the transport and industry sectors”.
“Given the magnitude of air pollution. it is urgent to set up regional, national and international policies to fight fairly against this pollution,” said the epidemiologist, well aware of the scale of the site.
For an inter-disciplinary approach to the prevention of dementia
Recalling that their meta-analysis essentially brings together data from “white people living in high-income prolonged exposure air pollution would countries”. the authors of the study call for future work on the same subject, taking more into account the world population in its diversity of origins and living spaces.
According to Dr. Christiaan Bredell. another co-author of the study, the results obtained in any case underline “the need for an interdisciplinary approach to dementia prevention”. “The prevention of dementia is not solely of the responsibility of health care, continues the researcher. This study strengthens the idea that town planning, transport policy and environmental regulations all have an important role to play.”
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