The Memory Vitamin: How B12 Can Keep Your Mind Sharp

Story at-a-glance Low vitamin B12 levels slow brain signals and thinking speed in seniors, affecting memory and focus Research shows vitamin B12 treatment improved symptoms in 84% of patients with memory issues, with 78% scoring higher on cognitive tests after three months High methylmalonate and homocysteine levels — B12 deficiency markers — are linked to smaller brain size and cognitive decline, even when B12 blood levels appear normal Regular vitamin B12 testing is important, especially after age 50, as your body absorbs less B12 with age and early intervention prevents damage to brain function Good B12 sources include grass fed meat and dairy; vegetarians and those taking medications like metformin should consider supplements to maintain B12 levels