ATLANTA / LONDON (IT BOLTWISE) – A new study from Emory University in Atlanta suggests that older Americans who are exposed to more air pollution have a higher risk of developing Alzheimer’s disease. The research suggests that air pollution could directly damage the brain, rather than just working through other chronic diseases such as strokes or high blood pressure.
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A recent study from Emory University in Atlanta has uncovered a potential link between air pollution and an increased risk of Alzheimer’s disease in older Americans. This research expands understanding of how environmental factors can influence brain health. The study looked at over 27.8 million Medicare recipients aged 65 and older over an 18-year period to analyze the effects of air pollution on the development of Alzheimer’s disease.
The researchers found that higher exposure to air pollution is associated with an increased risk of Alzheimer’s disease, particularly in people who have already suffered a stroke. This suggests that air pollution may directly affect brain health, rather than just working through other chronic conditions. Interestingly, high blood pressure and depression had little additional impact on the risk of Alzheimer’s disease, according to the study.
The results of this study highlight the importance of improving air quality as a potential tool to prevent dementia and protect older adults. Dr. Marc Siegel, a senior medical analyst, emphasizes that more and more studies show that Alzheimer’s is linked to conditions that affect the brain, which can be particularly sensitive and fragile. These findings could help develop strategies for the prevention, early diagnosis and targeted treatment of Alzheimer’s disease.
Ozama Ismail, PhD, director of scientific programs at the Alzheimer’s Association in Chicago, agrees that this study expands existing knowledge about the effects of air pollution on health, particularly as it relates to the brain. He emphasizes that further research is needed to better understand the connection between pollution and the various factors that cause or contribute to Alzheimer’s. In 2020, the Lancet Commission on Dementia Prevention added exposure to air pollution to its list of known dementia risk factors.
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