Vitamin B12 plays key roles in brain function, nerve health, and red blood cell production. Low B12 can contribute to cognitive symptoms that may appear similar to age-related memory conditions.
A study in the Journal of Nutrition, Health & Aging (2012) evaluated 130 nursing home residents and found:
- 14% were B12 deficient
- 36% were borderline deficient
- Deficiency was less common in those taking a daily multivitamin
- Residents using antipsychotic medications were more likely to have low B12
Early signs of low B12 may include:
- Forgetfulness
- Poor concentration or slow thinking
- Fatigue
- Low mood or depression
When severe, B12 deficiency can mimic Alzheimer’s disease, making it important to check levels and support healthy intake under professional guidance.
Educational only — not a diagnostic tool.
Reference
