The air we breathe every day is not just a source of heaviness or allergies. According to a recent scientific study, harmful substances in the air — nitrogen dioxide (NO₂) and PM2.5 particles — have a serious impact on the cognitive function of older adults.
This was reported in a scientific paper published in The Journals of Gerontology. The researchers' conclusion is very clear and concerning: air pollution reduces cognitive abilities, weakening a person's thinking, memory, speech, and decision-making capabilities.
10 years of analysis, over 1000 participants — conclusions from a major study
The study covered the period from 2008 to 2017 and involved 1127 elderly individuals aged 65 and older. Many factors were considered, such as their age, place of residence, lifestyle, and physical activity. Most importantly, the levels of NO₂ and PM2.5 in their living areas were the focus.
The results are not just analytical — they are based on practically tested facts:
- Residents of polluted areas performed worse on cognitive tests.
- The greatest difference was observed in speech abilities — finding words, pronunciation, and expressing thoughts.
- The effect was even stronger among those living near industrial and fuel sources.
Air pollution — the "silent enemy" of brain function
Notably, these harmful substances do not affect the human brain in a day but gradually over the years. Researchers describe this as a "silent attack on the human organism."
Harmful substances affecting brain function are released into the air from fuel combustion, heating systems, and industrial activities. Many people are unaware that they inhale these substances, which then reach the brain through the bloodstream.
What should be done?
The authors of the scientific study recommend the following to maintain brain health:
✅ A diet rich in fruits and vegetables;
✅ Physical activity and intellectual pursuits;
✅ Living or walking in areas with clean air as much as possible;
✅ Using air filters in indoor spaces.
Zamin.uz conclusion:
Brain function is not only age-dependent. In fact, the environment surrounding us determines the quality of our future. It is essential to know whether every particle of air you breathe is pleasant energy for your brain or a silent disaster.
Action must start today for a "mind that hasn't bitten" old age. A healthy brain is a guarantee of a healthy life.
Do you live in a place with clean air? What are your thoughts on such studies in general?
