Excessive light pollution may increase the risk of Alzheimer’s disease, especially in young people, as shown by a study published in the journal. Frontiers in Neuroscience.
Scientists analyzed light pollution maps from 48 U.S. states and data from patients in those areas. They divided participants into five groups, from lowest to highest nighttime light levels.
The prevalence of Alzheimer’s disease in people aged 65 and older was more strongly associated with nighttime light pollution than with some other risk factors, such as alcohol use, chronic kidney disease, depression, and obesity. Diabetes, hypertension, and previous stroke had a stronger effect on Alzheimer’s disease risk than light pollution.
But for people under age 65, nighttime light intensity was more strongly associated with Alzheimer’s disease risk than any other risk factor examined in the study. This could mean that younger people may be particularly sensitive to light exposure at night, the scientists said.
More research will be needed to better understand the study’s implications, but people, especially those at risk of dementia, may already benefit from using sleep masks and blackout curtains.
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Source: Gazeta
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