Back to today’s briefing

Story perspectives

Vitamin B12 Deficiency: Symptoms, Risks, and Doctor's Advice

10/23/2025

35 8

Summary

Story summary

Vitamin B12 deficiency can cause fatigue and muscle weakness.
It can also lead to nerve damage that may cause tingling, numbness, or loss of balance.
Cognitive issues like brain fog and mood changes can accompany deficiency.
In severe cases, vision problems may result from optic nerve damage.
Experts advise consulting a doctor for a blood test if symptoms arise, especially for vegetarians or people on certain medications.

1 of 1

Story summary

Vitamin B12 deficiency can cause fatigue and muscle weakness.
It can also lead to nerve damage that may cause tingling, numbness, or loss of balance.
Cognitive issues like brain fog and mood changes can accompany deficiency.
In severe cases, vision problems may result from optic nerve damage.
Experts advise consulting a doctor for a blood test if symptoms arise, especially for vegetarians or people on certain medications.