4. Mood Changes or Depression
Unusual irritability. Anxiety. Low mood.
🧪 B12 supports production of neurotransmitters like serotonin and dopamine. Deficiency has been linked in research to higher depression risk, particularly in older adults.
5. Pale or Slightly Yellow Skin
A subtle, lemon-toned pallor can be a sign of megaloblastic anemia related to B12 deficiency.
🩺 This often develops gradually and may go unnoticed in early stages.
6. Balance Problems or Clumsiness
Feeling unsteady. Tripping more often. Trouble with coordination.
⚖️ B12 deficiency can affect the spinal cord and your sense of body positioning (proprioception), increasing fall risk.
7. A Smooth, Red, or Sore Tongue
Known as glossitis, this classic symptom causes a glossy, swollen, or burning tongue.
👅 If your tongue appears unusually smooth — lacking its normal texture — it could be related.
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