Drama ecological, pollution is also a major public health issue
Every day, thousands of litres of air loaded with pollutants infiltrate the organization. Fine particulate matter, carbon monoxide, ozone, nitrogen dioxide and sulphur are responsible for 48,000 deaths per year in France, making the pollution the third leading cause of death behind tobacco and alcohol. The main culprits, the nanoparticles. From the wood-burning, diesel engines and industry, they are even more harmful that once in the air, they pick up other toxins (heavy metals, hydrocarbons) before it can be inhaled and spread via the blood to all organs. Effects on the system respiratoireÀ the short term and even at low exposure levels, pollution causes irritation of the nose and throat. But because nanoparticles are infiltrated down to the alveoli, worsen also chronic conditions such as asthma or bronchopathie. This risk is especially alarming among children, whose lungs, in development, can be significantly altered. In the long term, exposure to pollutants promotes the appearance of cancers of the lung, especially when it is combined with other risk factors such as tobacco.
” READ ALSO – Cancer: “the environment plays a very small role compared to tobacco and alcohol” Effects of cardio-vasculairesLa majority of deaths related to air pollution are due to heart disease. By triggering inflammatory phenomena, pollution activates the blood coagulation factor of blood clots and thrombosis. During the famous peaks of pollution, there is also a high incidence of myocardial infarction and cerebral vascular accidents. A STROKE in three fatal would be the same due to pollution, according to WHO.
In the long term, an air gradient causes of coronary heart disease and arrhythmias, they are also potentially lethal.
Effects on the fœtusDes studies conducted on pregnant rats have demonstrated that the particles can pass through the placental barrier, resulting in devastating effects on the unborn child. Women exposed to pollution during pregnancy to take the risk to see the development of their fetuses delayed, give birth prematurely, or give birth to a baby of small weight. Of the children who will, in turn, a higher risk of developing respiratory diseases.
” READ ALSO – expert Opinion – What is the impact of air pollution on our health? Effects neurologiquesLe link between pollution and neuro-degenerative diseases (dementia, Parkinson’s disease, Alzheimer’s disease) is a topic of study is recent and still discussed.
Picked up by the olfactory nerve, the nanoparticles would be transported to the brain, causing a neuro-inflammation.
A study conducted in 2017 in Ontario has shown that people living within 50 meters of a highway had a risk a little higher (7 %) of developing dementia.
But no clear link of cause and effect does not have, for the moment, could be attested. Solutions? Ambitious policies for the reduction of fine particle pollution are able, however, to stem significantly the effects of pollution.
In Tokyo, for example, the measures antidiesel implemented since 1999 have led to a reduction of 22 % in respiratory mortality.
According to public Health France, 34 000 lives could be saved each year if all of the common French brought in their rate of particles at the same level (5 %) than that of cities less polluted. .