vitamin B12 levels are low.
The tongue may become:
- Smooth
- Red
- Tender
- Sore
- Burning
Some people may also experience mouth sores or changes in taste.
Inflammation of the tongue associated with this condition is sometimes called glossitis.
7. Shortness of Breath or Heart Palpitations
If vitamin B12 deficiency causes anemia, the body may work harder to deliver enough oxygen to tissues.
As a result, some people may experience:
- Shortness of breath during physical activity
- Rapid heartbeat
- Heart palpitations
- Reduced stamina
These symptoms can also be caused by heart conditions, lung problems, iron-deficiency anemia, and other medical conditions.
For this reason, unexplained shortness of breath or palpitations should be medically evaluated.
8. Mood Changes
Vitamin B12 is involved in normal brain and nervous system function.
Some people with a deficiency may experience changes in mood, such as:
- Irritability
- Low mood
- Depression
- Increased anxiety
However, mood changes have many possible causes. Vitamin
