FAQ

How does pollution affect human health?

Stinging eyes, breathlessness, a cough that won’t budge: air pollution – especially when it’s cause by fine particles – is irritating, but can also be the cause of serious diseases. It even puts lives in danger: in France, air pollution cuts life expectancy by two years. And in New Delhi, this figure leaps to 10 years. In terms of deaths on a global scale, air pollution is just as dangerous as smoking, and even more serious than alcohol and unclean water (there are three times as many air pollution-related deaths) and HIV (six times more). Who is most at risk? People suffering from respiratory and cardiac disorders, diabetes, infants, seniors and pregnant women.

A factor in serious diseases

The effects of air pollution on health are well understood. Scientific studies have shown that they compromise the human immune system. As a result, the body undergoes oxidative stress* and a systemic inflammatory response** is created, which may increase the risk of other diseases. These include:

Respiratory conditions such as pharyngitis, asthma, chronic bronchitis and pneumonia.
Lung cancer: 17% of deaths can be attributed to air pollution.
Cardio-vascular diseases: air pollution is responsible for a lack of sufficient oxygen being provided to the heart muscles, which leads to diseases such as arrhythmia, arterial hypertension, cardiac arrest and thrombosis.
Neurodegenerative diseases: air pollution also has a disastrous effect on brain health. The risk of neurodegenerative diseases, in particular Alzheimer’s and Parkinson’s, is accentuated by exposure to fine particles generated by magnetic friction.
Reproduction and development issues in children such as infertility, miscarriage, stunted foetal growth and low birthweight babies, learning difficulties, and so on.

Every year, atmospheric pollution and fine particles cause 40,000 premature deaths in France and 238,000 deaths in Europe. Harvard researchers believe that this figure should be re-evaluated, and would attribute nearly 100,000 premature deaths in France per year to outdoor air pollution caused by fossil fuels.

Indirect effects of pollution on human health

Atmospheric pollution is harmful to the earth’s ecosystems, both on land and in the sea. In 2020, harmful levels of nitrogen deposits were observed in 75% of the total surface area of EU ecosystems. Fine particles end up in runoff waters, then flow into our rivers and oceans. They also attach themselves to plants and are then swallowed by animals. Air pollution disrupts ecosystems, destabilises the food chain and impacts our daily diet, and therefore our health. That’s why it is so important to find measures to reduce it. It’s a matter of saving human lives.

* Oxidative stress occurs when a cell can no longer manage the excessive presence of toxic molecules, mainly from cellular respiration and free radicals. They can damage cells and DNA.

** The systemic inflammatory response syndrome is a set of symptoms occurring in response to an attack on the body during infectious shock, severe trauma, extensive burns, pancreatitis, and so on. It is the most common cause of respiratory distress syndrome in adults.

Discover more questions

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What is a particle filter on a car?

Fine particles are harmful to human health. They can cause or exacerbate breathing and lung difficulties, cardiovascular diseases and even neurodegenerative diseases. This health risk can be limited if car owners would fit particle filters to their vehicles. Installed on exhaust or braking systems, particle filters are anti-pollution devices which capture fine particles emitted by vehicles. There are two types of particle filters: installations designed to capture particles from exhaust fumes generated by diesel and petrol vehicles, and those designed to recover fine particles from brake wear.

Driving towards a cleaner future: how to reduce vehicle pollution

There are 1.4 billion vehicles in circulation on the world’s roads. From the factory to the scrap yard, these vehicles require raw materials to be extracted from the earth, then emit CO2 and fine particles, which cause damage to our health and our planet. But what’s the solution? Use your car as little as possible, and opt for greener transport solutions: walking, cycling or public transport. But France is a very car-centric country. The best idea is to reduce – as best you can – how much pollution your car generates.

Where do fine particles come from?

Every year in France, air pollution and fine particles cause 40,000 premature deaths. If we’re going to reduce that impact, we need to understand more about them. But behind the generic term “fine particles” lurks a variety of meanings. Fine particles can take different sizes and shapes, can be made up of different things, and can come from different sources. It’s time to take a closer look.