Scientists talked about the connection between polluted air and dementia

Polluted air can be not only a risk factor for the lungs, but also a "silent accelerator" of neurodegeneration. This is stated in the material of the Science Daily magazine, which Izvestia reviewed on July 30.

The authors concluded that there is a statistically significant relationship between the risk of developing dementia and exposure to three key pollutants — PM2.5 microparticles capable of entering the lungs and reaching the brain, emitted by transport and industry, nitrogen dioxide, and soot. According to Dr. Hanin Hreis, it is the PM2.5 particles that pose the greatest danger.

According to the researchers, for every 10 micrograms of PM2.5 per cubic meter of air, the risk of dementia increases by 17%. These particles easily enter the lungs and are able to reach the brain, causing inflammation and oxidative stress, key processes underlying neurodegenerative diseases.

The study also showed that for nitrogen dioxide, the risk increases by 3% at a similar concentration, and with an increase in soot levels, the likelihood of dementia increases by 13%. As Dr Christian Bredell from the University of Cambridge and North West Anglia NHS Trust Hospital explains, "preventing dementia is not just a health responsibility.: This study confirms that urban planning, transport policy, and environmental regulation play an important role."

Scientists emphasize that it is socially vulnerable groups that are most affected by polluted air, therefore it is especially important to take into account ethnic and economic diversity when shaping global policies. According to the researchers, these findings are of critical importance for future public health measures.

"Combating air pollution can bring long-term benefits to health, society, climate, and the economy. It can reduce the enormous burden on patients, their families, and caregivers, while reducing the burden on overburdened healthcare systems," says Chris.

In addition, the analysis revealed that exposure to pollutants has a particular effect on the risk of developing vascular dementia, a form of the disease associated with impaired blood supply to the brain. Although there is not enough data yet to make a definitive conclusion, the authors emphasize that it is already clear that toxic emissions affect brain function much more strongly than previously thought.

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Neurologist Natalia Stepanenko on April 16 pointed out the connection of teeth grinding with Parkinson's disease. According to her, to make a diagnosis, it is necessary to consult a dentist or a neurologist. The doctor will examine the oral cavity and listen to the patient's complaints.

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