Blood B12 Below 300 Pg/mL Tracks 33% More Dementia Cases
The cohort tracked B12 across 129,159 matched pairs in 173 health systems; below 200 pg/mL, dementia risk climbed 64%.
- Ten-year dementia incidence hit 2.93% with low B12 versus 2.31% in matched controls.
- Stroke risk rose 31% and all-cause mortality climbed 23% in the same low-B12 group.
- Chi Mei Medical Center, Taiwan, led the study, published in Frontiers in Nutrition July 7.
Why it matters: Association from health records is not proof of cause, only a cheap test worth ordering early.
Frontiers in Nutrition — 'Association of low vitamin B12 status with incident dementia and stroke: an EHR database study' ↗ · Jul 20, 20267/20/26 · ✓ Checked✓ Check