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Psychology

Social Isolation and Cognitive Decline in Elderly Populations

Quick fact

A large meta-analysis found that socially isolated older adults have a 50% increased risk of developing dementia, and this risk is independent of depression or physical health—meaning it's not just a side effect of being sick or lonely.

Why this is interesting

You know that feeling of being alone in a crowd? Now imagine that feeling lasting for years. For millions of older adults, that persistent isolation isn't just sad—it might actually be changing their brain structure.