Hippocampal Volume
The physical size of the hippocampus, a brain area vital for memory and spatial navigation. Research shows aerobic exercise, which increases blood flow and BDNF, is linked to preserving or increasing this volume, countering disease-related shrinkage.
This term refers to the physical size of the hippocampus, a brain region critical for memory and spatial navigation. Scientific studies link it to neurodegenerative markers like neuronal apoptosis and gray matter loss, noting its reduction as certain diseases progress. Aerobic exercise, which boosts blood flow and brain-derived neurotrophic factor (BDNF), has been consistently associated with preserving or increasing this volume.
What this means in real life
A London taxi driver who spends years memorizing complex street routes may develop larger hippocampal volume in brain regions handling spatial memory compared to drivers using GPS, reflecting how intensive learning physically shapes brain structure.
What it isn’t
It is not a measure of intelligence or overall brain size. Two people with identical hippocampal volumes may have vastly different memory abilities depending on genetics, training, and other brain factors.
Commonly misused online
Social media often claims that meditation or supplements 'increase hippocampal volume,' conflating modest research findings with guaranteed brain growth. Most claims lack rigorous evidence or oversimplify complex neuroimaging data.