A new study reveals that the brain’s ability to process and retain information may decline more sharply with age than previously understood, challenging long-held assumptions about cognitive aging. Researchers found that even in healthy individuals, subtle but measurable changes in neural efficiency occur earlier than expected, particularly in regions critical for memory and decision-making. The findings suggest that lifestyle interventions—such as targeted exercise or cognitive training—could play a more significant role in mitigating decline than earlier research indicated. Experts emphasize the need for further investigation to determine how these changes manifest across different populations.