Overview

• The study is the first to link Alzheimer's disease with light pollution, using satellite data and Medicare records across the U.S.
• Higher levels of nighttime light exposure were correlated with increased Alzheimer's prevalence, even when other risk factors were considered.
• Younger individuals under 65 showed a stronger association between light pollution and Alzheimer's risk compared to older groups.
• Disruptions to circadian rhythms and increased inflammation due to artificial light exposure are potential mechanisms behind this link.
• Simple measures like using blackout curtains or eye masks at night can help reduce exposure to light pollution.