can happen with very low B12 levels.
Digestive symptoms may also be linked to the cause of the deficiency. For example, some people cannot absorb B12 properly because of stomach or intestinal conditions, certain medications, or pernicious anemia.
Who Is More at Risk of Vitamin B12 Deficiency?
Some people are more likely to develop low B12. Risk is higher in older adults, people who eat little or no animal products, people with pernicious anemia, people who have had stomach or intestinal surgery, and people with digestive conditions that affect absorption.
