{"id":9400,"date":"2026-04-25T09:00:09","date_gmt":"2026-04-25T07:00:09","guid":{"rendered":"https:\/\/www.marquis.rs\/en\/?p=9400"},"modified":"2026-04-25T15:45:48","modified_gmt":"2026-04-25T13:45:48","slug":"does-air-pollution-increase-the-risk-of-autism","status":"publish","type":"post","link":"https:\/\/www.marquis.rs\/en\/blog\/does-air-pollution-increase-the-risk-of-autism\/","title":{"rendered":"Does air pollution increase the risk of autism?"},"content":{"rendered":"

Does air pollution increase the risk of autism?<\/h1>\n

Yes, air pollution increases the risk of autism.<\/p>\n

Modern research indicates that exposure to pollution, especially fine particulate matter (PM2.5), may be associated with an increased risk. Particularly during pregnancy and early childhood, this risk may be even more pronounced.<\/p>\n

What is autism and how does it manifest?<\/h2>\n

Autism is a neurodevelopmental condition that affects communication, social interactions, and behavior. It often manifests through specific patterns in a child\u2019s development and functioning. Graphically, it is often symbolically represented by a puzzle motif, reflecting the complexity and diversity of this condition.<\/p>\n

Autism was long viewed primarily as a genetically determined disorder. However, increasing evidence indicates that environmental factors, including air quality, may also play an important role in its development. Estimates show that autism is diagnosed more frequently in boys than in girls.<\/p>\n

Scientific research: air pollution increases the risk of autism<\/h2>\n

One of the most frequently cited analyses on how air pollution increases the risk of autism comes from the Harvard T.H. Chan School of Public Health. It includes multiple studies.<\/p>\n

The results indicate a clear pattern. As exposure to PM2.5 particles increases, so does the risk of autism spectrum disorders. During early childhood, an increase of 10 \u00b5g\/m\u00b3 of PM2.5 is associated with an increase in this health risk of about 64%. In the prenatal period, this increase is about 31%, with the third trimester of pregnancy standing out as particularly sensitive.<\/p>\n

It is important to emphasize that these results do not prove direct causality, but they represent a sufficiently strong statistical signal that this influence cannot and must not be ignored.<\/p>\n

Which air pollutants are associated with autism risk?<\/h2>\n

Although PM2.5 stands out as the most influential factor, research has also included other air pollutants such as nitrogen dioxide (NO\u2082), nitrogen oxides (NOx), ozone (O\u2083), sulfur dioxide (SO\u2082), as well as larger particles (PM10).<\/p>\n

The results for these pollutants are not always consistent. In some studies there is a clear association, while in others it is not statistically significant. However, PM2.5 particles remain the most reliably confirmed indicator of risk.<\/p>\n

Why is pregnancy a particularly sensitive period?<\/h2>\n

Brain development begins very early and progresses extremely intensively during pregnancy. In this period, the baby\u2019s organism is particularly sensitive to external influences.<\/p>\n

Fine particles can enter the mother\u2019s bloodstream, and certain air pollutants have the potential to cross the placental barrier. The third trimester is especially important. This is when processes of neuron migration, synapse formation, and the beginning of myelination take place.<\/p>\n

In such a context, even relatively small changes in air quality can have long-term consequences for the baby\u2019s health.<\/p>\n

How does air pollution affect the brain?<\/h2>\n

The impact of air pollution on brain development does not occur through a single mechanism, but through multiple interconnected processes.<\/p>\n

Research points to the role of inflammation and oxidative stress, which can damage cells and tissues. In addition, increasing attention is being paid to subtle epigenetic changes.<\/p>\n

Disruptions in neurotransmitter systems have also been observed, particularly those involving glutamate and GABA (gamma-aminobutyric acid). This further indicates a potential impact on brain development and function.<\/p>\n

SEE ALSO: Air pollution affect our brains<\/a><\/p><\/blockquote>\n

Air pollution and other diseases<\/h2>\n

The impact of air pollution is not limited to brain development. Research indicates its potential influence on the development of type 2 diabetes, lung cancer, eye diseases, asthma, and many other conditions.<\/p>\n

Its impact has also been linked to reproductive health, as well as the outcomes of in vitro fertilization.<\/p>\n

SEE ALSO: How air pollution affects health \u2013 overview of all related topics<\/a><\/p><\/blockquote>\n

Both genetics and environment matter<\/h2>\n

Autism is a complex condition that cannot be explained by a single cause.<\/p>\n

Genetics plays an important role, but increasing research shows that it does not act in isolation. On the contrary, the interaction between genetic predisposition and environmental factors may be key to understanding the development of the disorder.<\/p>\n

In other words, genetics may define susceptibility, but the environment can influence whether and how that susceptibility is expressed. This explains how and why air pollution increases the risk of autism.<\/p>\n

Where are we most exposed to air pollution?<\/h2>\n

These findings do not mean that exposure to polluted air will necessarily lead to the development of autism. However, they indicate a statistically confirmed increased risk that should not be ignored.<\/p>\n

This is precisely why it is important to consider air quality as a factor that affects our health and one that can, at least partially, be controlled.<\/p>\n

Indoors, where we spend on average about 90% of our time, it is possible to create a controlled environment and significantly improve air quality\u2014especially in our own homes.<\/p>\n

This aspect becomes particularly important for families expecting a child. In practice, it is increasingly recognized that preparing a space for a newborn also includes the issue of air quality.<\/p>\n

Marquis Intelligence has on multiple occasions implemented residential ventilation systems for families expecting a child. These are typically systems with heat recovery and additional air purification using HEPA filters and bipolar air ionization systems. For more demanding clients, systems are further supplemented with humidification systems.<\/p>\n

SEE ALSO: Mini case study: Apartment ventilation in Belgrade<\/a><\/p><\/blockquote>\n

Why is indoor air quality at home the most important?<\/h2>\n

According to analyses by the Harvard T.H. Chan School of Public Health, a person spends on average about 65% of their life in their home. This means that the decision about the quality of the air we are exposed to is largely made at the household level.<\/p>\n

In practice, however, the focus is often on water. Water filtration is taken for granted.<\/p>\n

But what about air?<\/p>\n

Although a person consumes about 2 liters of water daily, while inhaling approximately 12,000 liters of air, air is usually neglected.<\/p>\n

Under such conditions, indoor air quality may have a greater impact on daily exposure than outdoor pollution. In some cases, indoor air can even be significantly more polluted.<\/p>\n

SEE ALSO: The importance of indoor air quality at home<\/a><\/p><\/blockquote>\n

Therefore, the issue of ventilation and air quality ceases to be only a technical issue. It becomes a matter of health and a conscious decision of the owner of the space.<\/p>\n

Conclusion<\/h2>\n

If we know that polluted air can affect brain development, then air quality is no longer a matter of comfort.<\/p>\n

It is a matter of health that begins before birth and can affect an entire lifetime.<\/p>\n

This is why, in practice, increasing attention is being paid to air quality when a family is expecting a child. At that moment, it becomes clear that air is not just part of the space – it is part of the environment in which a child begins its development.<\/p>\n

Experience shows that it is precisely in such situations that the most responsible decisions are made. When technology allows control over air quality, the decision about its level is no longer accidental.<\/p>\n

Air quality then becomes a conscious decision – and part of caring for the health of future generations.<\/p>\n

Sources<\/h2>\n