Vitamin B12: Nerve and Energy Health
Understand the B12 markers essential for brain function and red blood cell production.
For Informational Purposes Only
This content is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for any medical concerns.
Guide Overview & Important Ranges
Vitamin B12 is essential for nerve tissue health, brain function, and the production of red blood cells.
200 to 900 pg/mL
Normal Range
Nerve Issues
Low Marker
Under 200 is Deficient
Note
Recommended
Fasting?
Medical Deep Dive
Signs of Low B12
Symptoms include numbness or tingling in the hands/feet, balance issues, and memory loss.
Deficiency is common in vegetarians, vegans, and older adults with absorption issues.
If B12 is borderline, a Methylmalonic Acid (MMA) test can confirm deficiency.
B12 Analysis
Get an instant explanation of your B12 results.
Scientific References
This information is based on established clinical guidelines from authoritative sources.
Medically Reviewed for Accuracy
This content is aligned with established clinical guidelines from authoritative medical institutions, including MedlinePlus, the CDC, and the NHS.
BodyWellness AI uses a structured clinical logic framework to present this information clearly and safely.