Is there a direct link between pollution and dementia? Let’s look at what we’re discussing. Dementia is a blanket term for different forms of memory loss, language loss, and brain-related changes that trigger a decline in thinking or behavior skills. They can impact relationships, feelings, and other cognitive abilities. You have probably heard of the most common type of dementia before: Alzheimer’s. It is the most well-known; however, there are others like vascular dementia or mixed dementia. Though we know that dementia is caused by damage to the brain cells, we do not know what exactly causes specific types of dementia.
Memory loss is an early sign of Alzheimer’s, and unfortunately, there are no known cures to stop or slow its progression. Despite the lack of treatment, there is some information available on how to decrease the risk of dementia and cognitive decline in the first place, such as not smoking, healthy diets, regular exercise, and mental stimulation. Read on to learn about the connection between a polluted environment and the increased risk of dementia. After this, you’ll want to make sure your lungs only breathe the cleanest air!
10. Brain aging processes increase the risk of dementia, but air pollution nearly doubles it.
Fine, particulate matter produced by power plants and vehicles is called PM2.5. It is considered an air pollutant that can reduce visibility and can cause the air to appear hazy when its levels are elevated. The smaller the particles our cells are exposed to, the higher the levels of oxidative stress caused on our DNA and other cellular structures. The Environmental Protection Agency, or EPA, regulates inhalable particles. Furthermore, the EPA attempts to reduce emissions of pollutants to maintain national air quality standards. Most polluting particles are a result of emissions from power plants, industries, and automobiles.
In 2017, a study showed a revealing detail. Older women living in locations with high levels of PM2.5 indicated higher rates of memory loss and brain shrinkage than women residing in cleaner air. In fact, multiple studies have suggested that living in areas with PM2.5 levels higher than the EPA’s standard of 12 µg/m3 led to nearly double the usual risk of dementia in older women. Holding these findings standard, air pollution could account for almost 21% of dementia cases worldwide! It stands to reason that reducing human exposure to PM2.5 could avoid that specific risk factor for Alzheimer’s and dementia. Of course, that is easier said than done.