From the Research
Elevated vitamin B12 levels are not known to directly cause nosebleeds, and the relationship between the two is likely unrelated, as suggested by the most recent and highest quality study available 1. The causes of nosebleeds (epistaxis) are typically multifactorial, including dry air, trauma, nose picking, allergies, blood thinning medications, high blood pressure, or underlying bleeding disorders. While vitamin B12 plays crucial roles in blood cell formation and neurological function, having high levels in your bloodstream doesn't typically lead to increased bleeding risk. Some conditions that can cause elevated B12, such as certain liver diseases, some blood disorders, or excessive supplementation, might independently affect blood clotting, but this is not a direct effect of elevated vitamin B12 on nasal bleeding. Key factors to consider in the evaluation of nosebleeds include:
- Underlying medical conditions that may affect blood clotting
- Medications that may increase the risk of bleeding
- Environmental factors such as dry air or trauma
- The presence of any bleeding disorders If you're experiencing frequent or severe nosebleeds, it's essential to consult with a healthcare provider to determine the cause, regardless of your vitamin B12 status, as they can evaluate for common causes of nosebleeds and determine if any treatment is necessary, based on the most recent evidence available 1.