A new study reveals that the brain’s ability to process information may decline more sharply with age than previously believed, challenging long-held assumptions about cognitive aging. Researchers found that even in healthy individuals, neural efficiency drops significantly in later years, particularly in tasks requiring rapid decision-making and memory recall. The findings suggest that lifestyle and environmental factors could play a larger role in maintaining cognitive function than genetic predisposition alone. Experts warn that these insights may prompt a reevaluation of how aging is understood and addressed in medical and public health policies.