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What is the relationship between street lights and increased risk of Alzheimer's disease?
health| 8 September, 2024 - 10:33 PM
A new study finds that excessive exposure to urban light pollution, such as street lights, may increase the risk of Alzheimer's disease.
Researchers at Rush University Medical Center in the United States studied light pollution in 48 US states, dividing them into 5 groups based on brightness intensity, according to the study published in the journal Frontiers in Neuroscience.
They then compared the data to medical records of people living in those states, taking into account known risk factors for Alzheimer's, such as high blood pressure and obesity.
The study found that higher levels of outdoor light pollution at night were associated with an increased incidence of Alzheimer's disease.
Heavy exposure to light pollution was found to have a greater effect on disease development in people aged 65 years or older, compared to other risk factors, such as alcohol consumption, depression and obesity.
But for those under 65, exposure to light pollution was linked to a greater risk of developing Alzheimer's disease "than any other factor in the study."
The research team explained that the results suggest that younger people may be particularly sensitive to the effects of light at night.
“Nighttime light pollution, a modifiable environmental factor, may be an important risk factor for Alzheimer’s disease,” said Dr. Robin Voit-Zwala, the study’s first author. “Awareness should enable people to make easy lifestyle changes, such as using blackout curtains or sleeping with eye masks.”
Source: Daily Mail