04/12/2025
Low vitamin B12 levels don’t just cause tiredness—research shows they can make the brain shrink much faster than normal aging.
In long-term studies, people with low B12 had significantly higher brain-volume loss, especially in memory and thinking regions.
This silent shrinkage can gradually affect focus, recall, and overall cognitive performance.
Scientists also noted that low B12 increases homocysteine, a harmful compound linked to nerve damage and faster brain atrophy.
When homocysteine rises, the brain’s protective structure weakens, making cognitive decline harder to slow down.
Maintaining healthy B12 levels is one of the simplest steps to protect long-term brain health.
