A new study has shown that the air we breathe could affect our brain more than we think. Long-term exposure to air pollution may increase the risk of dementia. This research was done by the Medical Research Council (MRC) Epidemiology Unit and the University of Cambridge. It was published in The Lancet Planetary Health journal.
The researchers reviewed 51 different studies, covering more than 29 million people. All of them had been exposed to air pollutants like PM2.5 (tiny harmful particles), nitrogen dioxide, and soot for at least one year.
The findings suggest that these pollutants can reach the brain either directly or through the bloodstream. Once there, they can cause inflammation. This kind of inflammation is similar to what happens in the lungs and heart due to pollution.
One of the researchers, Clare Rogowski, said that pollution from vehicles and industries needs to be reduced. She stressed the importance of strong laws at local, national, and global levels to fight pollution.
The study also showed how much pollution increases the risk. Every time the PM2.5 level rises by 10 micrograms per cubic metre, the risk of dementia goes up by 17%. For soot, the risk rises by 13%.
Dr Christiaan Bredell from the University of Cambridge added that preventing dementia isn’t just a medical issue. He believes that better planning of cities, cleaner transport systems, and strong environmental rules can also help reduce the risk.
This study is a strong reminder that air pollution affects more than just our lungs or hearts. It also has a serious impact on our brain health. Everyone, from doctors to city planners and lawmakers, needs to work together to reduce pollution and protect public health.
Note: This article is for general awareness. Please talk to a healthcare expert before making changes to your health or lifestyle routines.
