Vitamin B12 deficiency can cause a range of symptoms, affecting energy levels, nerves, and cognitive functions such as; Feeling tired or weak, even after rest, Shortness of breath or dizziness, ...

Allergic reactions to vitamin B12 are rare, but real. The reason may sound strange, but it's true - an allergy to cobalt.

Learn how to spot vitamin B12 deficiency symptoms early and find the best ways to incorporate it into your daily routine.

Vitamin B12 is the most common deficiency among people with Crohn’s, says Sandborn. Severe cases can lead to anemia as well as nerve damage, resulting in tingling or numbness in the fingers and ...