increased breakdown of abnormal red blood cells.
However, yellowing of the skin or the whites of the eyes can have other causes, including liver and gallbladder conditions. It should be medically assessed rather than automatically attributed to a vitamin deficiency.
- Shortness of Breath and Heart Palpitations
When B12 deficiency causes anemia, the blood may carry less oxygen than the body needs.
As a result, some people experience:
Breathlessness during ordinary activities.
A noticeably faster heartbeat.
Heart palpitations.
Reduced exercise tolerance.
Dizziness or lightheadedness.
These symptoms can also be associated with heart, lung, and other blood-related conditions.
Severe breathlessness, chest pain,
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