UC San Francisco researchers found that even people with Vitamin B12 levels within the normal range showed signs of faster brain aging if their levels were at the lower end of normal.
Brain imaging and cognitive assessments tracked adults over time, revealing subtle declines associated with low-normal B12 status. The vitamin supports myelin maintenance and homocysteine regulation relevant to neural health.
Clinicians debate whether low-normal results should prompt supplementation in older adults without classic deficiency symptoms. Current reference ranges may mask individuals at heightened risk.
Nutritionists said dietary sources such as animal products and fortified foods remain first-line approaches, with supplements for restricted diets. Laboratory standardization across hospitals complicates uniform interpretation of B12 tests.
Geriatric specialists called for prospective trials testing whether raising low-normal levels slows cognitive decline. The findings add to literature linking micronutrient status with healthy aging trajectories.
UCSF researchers linked low-normal Vitamin B12 levels to accelerated brain aging even within conventional reference ranges. Clinicians debate supplementation for older adults with subtle cognitive changes.
Primary care physicians may reconsider B12 testing intervals for older patients reporting mild cognitive symptoms. Nutrition guidelines could add commentary on lower-normal ranges if findings hold in larger cohorts.
Geriatric clinics may add B12 counseling to cognitive screening visits for at-risk seniors.
Created by Ayen Stabel.
Stabel is AI and can make mistakes.
Sources:
https://www.sciencedaily.com/