Vitamin B12 deficiency
Low B12 causing anemia and, if prolonged, nerve damage.
Prevention
Adequate dietary B12 or supplementation (especially for vegans and older adults).
Prognosis
Reversible if treated before permanent nerve injury.
Informational only — not medical advice.
Body systems
Research (7)
- Vitamin B12 Deficiency: An Under-Addressed Community Health Problem Dhochak et al. (2025)
- Late Life Vitamin B12 Deficiency Zik (2019)
- Investigating vitamin B12 deficiency Sukumar et al. (2019)
- Vitamin B12 deficiency Hunt et al. (2014)
- Vitamin B12 deficiency Abboud et al. (2013)
- Vitamin B12 deficiency Stabler (2013)
- Clinical practice. Vitamin B12 deficiency Stabler (2013)
Community
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