Side effects of vitamin B-12

Side effects of vitamin B-12'

Vitamin B12 deficiencies occur when the body is unable to properly use the vitamin. Pernicious anemiaPernicious anemia can make the body unable to absorb vitamin B12 from the intestinal tract.

Because vitamin B12' comes primarily from animal products, people who follow a strict vegetarian or vegan diet and do not consume eggs or dairy products may require vitamin B12 supplements. (Non-animal sources of vitamin B12 exist but are highly variable in their B12 content. They are considered unreliable sources of the vitamin.)

Those who had surgery on specific parts of the small intestine or stomach are also prone to a deficiency if they do not take B12 supplements.

Low levels of B12 can cause anemia, numbness or tingling in the arms and legs, .weakness, and loss of balance..