Challenging social environments and the size of the left hippocampus in children aged 9-11 contribute to an increased risk of depression. Researchers found that children with larger hippocampal volumes are more sensitive to negative social environments, amplifying depressive symptoms over a two-year period.

A recent study has found a positive correlation between nighttime light pollution and the prevalence of Alzheimer’s disease (AD) in the United States. Researchers discovered that higher levels of light at night are associated with increased AD rates, particularly among individuals under the age of 65.